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LOFT BOARDS

LOFT SLABS

Loft insulation slab also referred to as 'loft board' is a great space-saving option, manufactured in sheets that are pre-cut to fit between any joist spacing to provide extra insulation within your pitched roof. Boards will boost thermal performance, improve acoustics and insulate between rafters. It’s recommended for pitched roofs that you go for moisture-resistant loft boards as standard just as a precaution. Slabs are provided in sizes that are easily transportable and good for handling measuring 1200mm x 600mm. In England, the required minimum U-value for pitched roofs insulated at rafter level is 0.18 W/m²K or lower. This equates to a 175mm of slab insulation. The regulations don’t specify which material is used – there is a range to choose from and each will have different thicknesses to achieve the minimum U-value. Ideally, you want insulation that gives the lowest U-value for the thinnest material so that your headroom is affected as little as possible, or you may want to consider environmentally friendly insulation materials. Insulation slabs are generally added under a vapour control layer, which reduces the risk of mould and condensation forming. If cutting loft slabs always ensure you have the correct protective clothing and equipment on. This includes goggles, to protect dust from irritating your eyes, as well as a dust mask.

MANUFACTURERS

When it comes to best loft insulation boards between the rafters, Rockwool and Knauf are main players in the UK market. InsulationGo is proud to offer a wide range of loft insulation boards, from those well-known industry leaders. Each brand of insulation board is different, because of the materials they’re manufactured out of or because of their core application. General-purpose insulation boards such as RWA45, RW5 or RW3 are perfect for many standard applications. These types of boards can be used in pitched roofs, ceilings, floors and walls thanks to their sturdy makeup and their easy installation. 
Offering a number of different ranges of insulation boards, Knauf have ensured that they have created a product for every possible situation. 
Knauf insulation boards can be used in both the ceiling or pitched roof sector to improve the insulation. Knauf insulation slabs are continuously developing, using their years of experience and high-quality innovation to create double foil facings that provide maximum heat resistance. On other hand, Rockwool is one of the most well-known brands around when looking for insulation loft slabs. With an incredibly wide range of different insulation boards, including their popular RWA45, Rockwool insulation boards have been designed for use by contractors and DIYers, specifically for the construction industry in both domestic and commercial builds. Slabs are available in a number of different thicknesses, conductivities and can be used in pitched roofs, flat roofs and floors to ensure the building is well insulated with minimal heat loss.

LOFT INSULATION COSTS

Loft conversions involve time and money and should therefore be carefully considered before going ahead with any plans you may have, and this includes insulation. The cost of insulating a loft will also depend on whether you are going to do the work yourself or hire a professional to do it for you. By fitting insulation slabs yourself you can save a fortune. As of 2022 most popular insulation slab 150mm Rocksilk RS45 Knauf cost £36.36 per m2. Average size roof in the UK measures 70m2. Taking this into consideration you would be paying around £2545 for materials only. If you decide to do it everything yourself, there's no need to worry about the cheapest loft board as you saved money already on labour costs. One thing to remember if you do this yourself is that you should leave a gap between the insulation and the roof slats. This is to ensure that there is enough ventilation to prevent any build-up of condensation and moisture. If any moisture settles in the insulation fabric it will eventually rot.

TYPES OF INSULATION SLABS

Slabs can be supplied either in standard unfaced 1200mm x 600mm size or foil backed on both sides.  Unfaced slabs and foils faced boards offer great fire performance classified as Euroclass A1. These odorless, non-hygroscopic, and rot proof slabs are free of CFCs and HCFCs and will not encourage the growth of fungi, mould or bacteria. Generally speaking, kg/m³ is the weight of the slabs if they were manufactured in a block of one metre cube (1m x 1m x 1m). In order for them to be identified, they are given a density rating which refers to the weight of a metre cube, displayed as kg/m³. Loft insulation is available in a variety of densities which range from 45kg up to 100kg per slab. The greater the mass is, the harder it is to vibrate this material, thus the better the insulating property will be. Therefore, it is better to choose dense and heavy material.

45kg/m³ insulation slabs are the low level insulation density slabs available either from Rockwool or Knauf brand. Although, those slabs still have higher density than other forms of insulation unlike thermal insulation which is lower in density and supplied in rolls. Rockwool RWA45 or Knauf RS45 is named after its density properties in that it has a density of 45Kkg per cubic meter. The 45kg range slabs include the following readily available product thicknesses: 25mm ǀ 30mm ǀ 40mm ǀ 50mm ǀ 60mm ǀ 75mm ǀ 90mm ǀ 100mm 

60kg/m³ acoustic insulation slabs are the middle level insulation density slabs. In fact, it is recommended to use 60kg/m³ slabs as they offer the best insulation value for the money spent. Rockwool RW3 or Knauf RS60 is named after its density properties in that it has a density of 60kg per cubic meter. The 60kg/m³ density slabs are ideal either for loft floors or ceilings to control home acoustics. 60kg density slabs can be supplied either in standard unfaced 1200mm x 600mm size or foil backed on both sides. Unlike unfaced slabs, foils faced boards offer great fire performance classified as Euroclass A1. 60kg range slabs include the following thicknesses:
25mm ǀ 30mm ǀ 40mm ǀ 50mm ǀ 60mm ǀ 75mm ǀ 90mm ǀ 100mm 

100kg/m³ acoustic insulation slabs are the high level insulation density slabs available either from Rockwool or Knauf brand. In fact, it is recommended to use 100kg/m³ slabs in places such as hospitals, auditoriums, stadium acoustics, commercial spaces and doctor offices. Rockwool RWA5 or Knauf RS100 are great examples of high density slabs made especially for commercial and industrial loft spaces.

Video credit:https://www.youtube.com/watch?v=u0BYRb6MHBM&t=85s

 

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Rockwool acoustic insulation slabs overview

 

Brand: Knauf® Model: 25mm RS45 Black Foil Faced x2 Sides
25mm Black Foil Faced Two Sides Knauf RS45 Slab is a semi rigid rock mineral wool black foil backed on both sides insulation slab with an excellent class A1 fire performance. Knauf RS45 Black foil backed on both sides slab provides outstanding fire, thermal and acoustic performance for both new b..
  • 25mm Black Foil Faced x2 Sides Knauf RS45 Insulation Slab A1 Class
  • Class ‘O’ to the Building Regulations and Class A1 fire performance
  • Density of 45kg/m3 with an excellent thermal and acoustic properties
  • Provides from 30 up to 240 minutes of fire protection (x2 Foil Faced RS45)
  • Double Sides Black Foil Faced Slab accumulates heat on one side of the slab
£ 624.00
Ex Tax:£ 520.00
Estimated delivery: 5-7 working days
Brand: Knauf® Model: 25mm RS60 Black Foil Faced x2 Sides
25mm Knauf RS60 Black Foil Backed Two Sides Slab is an insulation solution specially designed for concrete soffits, an A1 class non-combustible rock mineral wool slab. Black foil backed and faced 60kg density insulation slab is less visible than the silver foil which is handy specially during the..
  • 25mm Black Foil Faced x2 Sides Knauf RS60 Insulation Slab A1 Class
  • Class ‘O’ to the Building Regulations and Class A1 fire performance
  • Density of 60kg/m3 with an excellent thermal and acoustic properties
  • Provides from 30 up to 240 minutes of fire protection (x2 Foil Faced RS60)
  • Double Sides Black Foil Faced Slab accumulates heat on one side of the slab
£ 399.00
Ex Tax:£ 332.50
Estimated delivery: 5-7 working days
Brand: Knauf® Model: 25mm RS45 Black Foil Faced x1
25mm Black Foil Faced Knauf Rocksilk RS45 Insulation Slab is a non-combustible rock mineral wool black foil backed insulation slab with an excellent class A1 fire performance. Knauf RS45 1200mm x 600mm x 25mm black foil backed slab provides outstanding fire, thermal and acoustic performance for b..
  • 25mm Black Foil Faced Knauf Rocksilk RS45 Insulation Slab A1 Class
  • Class ‘O’ to the Building Regulations and Class A1 fire performance
  • Density of 45kg/m3 with an excellent thermal and acoustic properties
  • Provides from 30 up to 240 minutes of fire protection (Foil Faced RS45)
  • Black Foil Faced Insulation Slab accumulates heat on one side of the board
£ 527.88
Ex Tax:£ 439.90
Estimated delivery: 5-7 working days
Brand: Knauf® Model: 25mm RS60 Black Foil Faced x1
25mm Aluminium Black Foil Backed Knauf RS60 60kg Slab is a rigid class A1 non-combustible rock mineral wool insulation slab faced with a reinforced black aluminium foil. The black aluminium foil faced insulation slab accumulates heat on one side of the board, unlike the aluminium silver foil that..
  • 25mm Black Foil Faced Knauf Rocksilk RS60 Insulation Slab A1 Class
  • Class ‘O’ to the Building Regulations and Class A1 fire performance
  • Density of 60kg/m3 with an excellent thermal and acoustic properties
  • Provides from 30 up to 240 minutes of fire protection (Foil Faced RS60)
  • Black Foil Faced Insulation Slab accumulates heat on one side of the board
£ 389.88
Ex Tax:£ 324.90
Estimated delivery: 5-7 working days
Brand: Knauf® Model: RS60 Black Tissue x2 (25mm)
Knauf RS60 Black Tissue Faced 2 Sides Insulation Slab is a 25mm thick fire and acoustic rock mineral wool insulation slab, used for providing fire resistance and thermal insulation for roofs, concrete car park soffits and similar applications. Rocksilk RS60 Slab (25mm x 600mm x 1200mm) faced with..
  • 30mm Knauf RS60 Black Tissue Faced 2 Sides A1 Insulation Slab
  • Density 60kg/m3 Thermal conductivity (lambda) of 0.034W/mK
  • Provides from 30 minutes up to 240 minutes fire protection
  • Class A1 Non-combustible Rock Mineral Wool Insulation Slab
  • Used for structural elements such as concrete car park soffits
£ 417.96
Ex Tax:£ 348.30
Estimated delivery: 3-5 working days
Brand: Knauf® Model: Black Tissue x2 - 25mm RS45
Black Tissue Faced 2 Sides Knauf Rocksilk RS45 Insulation Slab is a 25mm thick rock mineral wool based, class A1 non-combustible insulation slab, used for structural elements such as roofs, concrete car park soffits and similar applications. The black tissue facings on two sides helps to avoid th..
  • 25mm Black Tissue Faced 2 Sides Knauf RS45 Insulation Slab
  • Class A1 Non-combustible Rock Mineral Wool Insulation Slab
  • Provides from 30 minutes up to 240 minutes fire protection
  • Density 45kg/m3 Thermal conductivity (lambda) of 0.035W/mK
  • Used for structural elements such as concrete car park soffits
£ 438.71
Ex Tax:£ 365.59
Estimated delivery: 3-5 working days
Brand: Knauf® Model: 25mm RS45 Black Tissue x1
25mm Black Tissue Faced Knauf RS45 Insulation Slab is a rock mineral wool based, class A1 non-combustible insulation slab, used for structural elements such as roofs, concrete car park soffits and similar applications. Rocksilk RS45 is a high-efficiency insulation slab with a certified lambda val..
  • 25mm Black Tissue Faced Knauf Rocksilk RS45 Insulation Slab A1
  • Class A1 Non-combustible Rock Mineral Wool Insulation Slab
  • Provides from 30 minutes up to 240 minutes fire protection
  • Density 45kg/m3 Thermal conductivity (lambda) of 0.035W/mK
  • Used for structural elements such as concrete car park soffits
£ 365.44
Ex Tax:£ 304.53
Estimated delivery: 3-5 working days
Brand: Rockwool® Model: Double Sided Foil RW5 - 25mm
25mm Double Sided Aluminum Foil Slab Rockwool RW5 (100kg) is a foil faced on both sides stone wool resin bonded slab developed to prevent the spread of flames and inhibit heat and smoke through concealed spaces in buildings. Rockwool RW5 Foil Faced Two Sides Fire Barrier Slab 25mm x 600mm x 1200m..
  • 25mm Double Sided Foil Faced Fire Slab Rockwool RW5
  • 100kg density - Foil Faced on Both Sides Fire Barrier Slab
  • Developed to prevent the spread of flames and inhibit heat
  • Conform with the Building Regulations Approved Document B
  • Excellent fire performance classified as Euroclass A1 | Class 'O'
£ 246.07
Ex Tax:£ 205.06
Estimated delivery: 7-10 working days
Brand: Knauf® Model: 25mm Two Foil Faced RS45
25mm Foil Faced on Both Sides Rocksilk RS45 Knauf Fire Insulation Slab is a standard density (45kg/m3) non-combustible rock mineral wool two-sided foil-faced slab with a great fire performance (Class A1) suitable for use in multiple applications. Knauf RS45 1200mm x 600mm x 25mm double sided alum..
  • FOIL FACED BOTH SIDES Slab - FFx2
  • Class ‘O’ to the Building Regulations - Euroclass A1
  • Density: 45kg/m3 - Excellent thermal and acoustic properties
  • Class 1 Surface Spread of Flame - Non-combustible - Odourless, Rot Proof, Non-Hygroscopic
  • Durability: do not sustain vermin and will not encourage the growth of fungi, mould or bacteria.
£ 750.60
Ex Tax:£ 625.50
Estimated delivery: 5-7 working days
Brand: Rockwool® Model: Double Sided Foil RW3 - 25mm
25mm Foil Backed Double Sided Insulation Slab RW3 (11.52m²/pack) is an aluminium foil faced on both sides stone wool resin bonded slab developed to prevent the spread of flames and inhibit heat and smoke through concealed spaces in buildings. Rockwool RW3 Foil Faced Two Sides Fire Barrier Slab 25..
  • Double Sided Foil Facing Fire Slab Rockwool RW3 - 25mm
  • Aluminium Foil Faced on Both Sides Fire Barrier Slab
  • Developed to prevent the spread of flames and inhibit heat
  • Conform with the Building Regulations Approved Document B
  • Excellent fire performance classified as Euroclass A1 | Class 'O'
£ 506.36
Ex Tax:£ 421.97
Estimated delivery: 3-5 working days
Brand: Rockwool® Model: Foil Faced 1 Side RW5 - 25mm
25mm Foil Faced 1 Side Fire Insulation Slab Rockwool RW5 is a high performance foil faced fire and acoustic stone wool core insulation slab used where fire resistant walls need to be continued above a ceiling into the roof void. Rockwool RW5 Foil Backed Slab is an A1 class, non-combustible alumin..
  • 25mm Foil Faced 1 Side Insulation Slab Rockwool RW5
  • 100kg density - Foil Faced on One Side Fire Barrier Slab
  • Developed to prevent the spread of flames and inhibit heat
  • Conform with the Building Regulations Approved Document B
  • Excellent fire performance classified as Euroclass A1 | Class 'O'
£ 258.20
Ex Tax:£ 215.17
Estimated delivery: 5-7 working days
Brand: Rockwool® Model: 25mm Foil Faced RW3
25mm Foil Faced Fire Slab Rockwool RW3 (11.52m² / pack) is a high performance foil faced fire and acoustic stone wool core insulation slab developed to prevent the spread of flames and inhibit heat and smoke through concealed spaces in buildings. Rockwool RW3 Foil Faced Slabs (60kg per m3) are si..
  • Rockwool RW3 Foil Faced Fire Slab 25mm (60kg/m3)
  • Aluminium foil faced fire and acoustic stone wool slab
  • Developed to prevent the spread of flames and inhibit heat
  • Conform with the Building Regulations Approved Document B
  • Great fire performance classified as Euroclass A1 | Class 'O'
£ 545.76
Ex Tax:£ 454.80
Estimated delivery: 3-5 working days
Brand: Knauf® Model: 25mm Foil Faced RS100
25mm Foil Faced Rocksilk RS100 Knauf Insulation Slab is a high-density (100kg/m3) non-combustible rock mineral wool foil backed rigid insulation slab with a great fire performance classified as Euroclass A1, suitable for use in multiple applications. Knauf RS100 1200mm x 600mm aluminium foil slab..
  • FOIL FACED Slab - Odourless, Rot Proof, Non-Hygroscopic
  • Class ‘O’ to the Building Regulations - Euroclass A1
  • Density: 100kg/m3 Excellent thermal and acoustic properties
  • Class 1 Surface Spread of Flame - Non-combustible
  • Fire, thermal and acoustic performance.
£ 404.63
Ex Tax:£ 337.19
Estimated delivery: 7-10 working days
Brand: Knauf® Model: 25mm Foil Faced RS45
25mm Foil Faced Rocksilk RS45 Knauf Insulation Slab is a standard density (45kg/m3) non-combustible rock mineral wool foil backed building slab with a great fire performance classified as Euroclass A1, suitable for use in multiple applications. Knauf RS45 1200mm x 600mm foil backed slab provides ..
  • FOIL FACED Slab - Odourless, Rot Proof, Non-Hygroscopic
  • Class ‘O’ to the Building Regulations - Euroclass A1
  • Density: 45kg/m3 - Excellent thermal and acoustic properties
  • Class 1 Surface Spread of Flame - Non-combustible
  • Durability: do not sustain vermin and will not encourage the growth of fungi, mould or bacteria.
£ 498.44
Ex Tax:£ 415.37
Estimated delivery: 5-7 working days
Brand: Knauf® Model: 25mm Foil Faced RS60
25mm Foil Faced Rocksilk RS60 Knauf Insulation Slab is a medium density (60kg/m3) non-combustible rock mineral wool foil backed building slab with a great fire performance classified as Euroclass A1, suitable for use in multiple applications. Knauf RS60 1200mm x 600mm aluminium foil insulation sl..
  • FOIL FACED Slab - Odourless, Rot Proof, Non-Hygroscopic
  • Class ‘O’ to the Building Regulations - Euroclass A1
  • Density: 60kg/m3 - Excellent thermal and acoustic properties
  • Class 1 Surface Spread of Flame - Non-combustible
  • Non-combustible foil faced insulation slab - Multiple applications
£ 315.19
Ex Tax:£ 262.66
Estimated delivery: 7-10 working days
Brand: Knauf® Model: 25mm Two Foil Faced RS100
25mm Foil Faced on Both Sides Rocksilk RS100 Knauf Insulation Slab is a high-density (100kg/m3) non-combustible rock mineral wool foil-faced two-sides rigid insulation slab with a great fire performance (Class A1) suitable for use in multiple applications. Knauf RS100 1200mm x 600mm aluminium foi..
  • FOIL FACED BOTH SIDES Slab - FFx2
  • Class ‘0’ to the Building Regulations Euroclass A1
  • Density: 100kg/m3 Excellent thermal and acoustic properties
  • Class 1 Surface Spread of Flame Non-combustible
  • Provides excellent fire, thermal and acoustic performance.
£ 589.85
Ex Tax:£ 491.54
Estimated delivery: 7-10 working days
Brand: Knauf® Model: 25mm Two Foil Faced RS60
25mm Foil Faced on Both Sides Rocksilk RS60 Knauf Fire Insulation Slab is a medium density (60kg/m3) non-combustible rock mineral wool foil-faced two-sides slab with a great fire performance (Class A1) suitable for use in multiple applications. Knauf RS60 1200mm x 600mm aluminium foil insulation ..
  • FOIL FACED BOTH SIDES Slab - FFx2
  • Class ‘0’ to the Building Regulations - Euroclass A1
  • Density: 60kg/m3 Excellent thermal and acoustic properties
  • Class 1 Surface Spread of Flame - Non-combustible
  • Durability: will not encourage the growth of fungi, mould or bacteria.
£ 512.32
Ex Tax:£ 426.93
Estimated delivery: 7-10 working days
Brand: Knauf® Model: 25mm RS45 White Tissue x2
White Tissue Faced 2 Sides Knauf RS45 Insulation Slab is a 25mm thick rock mineral wool based, class A1 non-combustible insulation slab, used for structural elements such as roofs and concrete car park soffits. 25mm Rocksilk RS45 is a standard density (45kg/m3) insulation slab with a certified th..
  • 25mm White Tissue Faced 2 Sides Knauf RS45 Insulation Slab
  • From 30 up to 240 minutes fire protection (1200x600x25mm slab)
  • Class A1 Non-combustible Rock Mineral Wool Insulation Slab
  • Density 45kg/m3 Thermal conductivity (lambda) of 0.035W/mK
  • Used for structural elements such as concrete car park soffits
£ 372.00
Ex Tax:£ 310.00
Estimated delivery: 3-5 working days
Brand: Knauf® Model: 25mm RS60 Black Tissue x1
25mm Knauf RS60 Black Tissue Faced Insulation Slab is an acoustic rock mineral wool based, class A1 non-combustible insulation slab, used for structural elements such as roofs, concrete car park soffits and similar applications. Knauf Rocksilk RS60 is a medium density (60kg/m3) insulation slab wi..
  • Black Tissue Faced Knauf Rocksilk RS60 Insulation Slab A1 (25mm)
  • Density 60kg/m3 Thermal conductivity (lambda) of 0.034W/mK
  • Class A1 Non-combustible Rock Mineral Wool Insulation Slab
  • Provides from 30 minutes up to 240 minutes fire protection
  • Used for structural elements such as concrete car park soffits
£ 363.55
Ex Tax:£ 302.96
Estimated delivery: 3-5 working days
Brand: Knauf® Model: 25mm RS60
25mm Rocksilk RS60 (Rock Mineral Wool Slab) Knauf Insulation Building Slab is a medium density (60kg/m3) non-combustible rock mineral wool unfaced slab designed for use in multiple applications with a great fire performance classified as Euroclass A1, which is the highest fire rating for non-combust..
  • Class 1 Surface Spread of Flame - Non-combustible
  • Class ‘O’ to the Building Regulations - Euroclass A1
  • Density: 60kg/m3 - Excellent thermal and acoustic properties
  • Unfaced Slab - Odourless, Rot Proof, Non-Hygroscopic
  • Durability: will not encourage the growth of fungi, mould or bacteria.
£ 72.64
Ex Tax:£ 60.53
Estimated delivery: 7-10 working days
Brand: Knauf® Model: 25mm Rocksilk RS100
25mm Rocksilk RS100 Knauf (Rock Mineral Wool) Insulation Building Slab is a high-density (100kg/m3) non-combustible rock mineral wool unfaced rigid slab designed for use in multiple applications with a great fire performance classified as Euroclass A1, which is the highest fire rating for non-combus..
  • Class 1 Surface Spread of Flame - Non-combustible
  • Class ‘0’ to the Building Regulations - Euroclass A1
  • Density: 100kg/m3 Excellent thermal and acoustic properties
  • Unfaced Slab - Odourless, Rot Proof, Non-Hygroscopic
  • Rigid Non-combustible Unfaced Fire Rated A1 Insulation Slab
£ 87.38
Ex Tax:£ 72.82
Estimated delivery: 7-10 working days
Brand: Knauf® Model: 25mm Rocksilk RS45
25mm Rocksilk RS45 Knauf Rock Mineral Wool Insulation Slab is a standard density (45kg/m3) non-combustible rock mineral wool building slab designed for use in multiple applications with a great fire performance classified as Euroclass A1, which is the highest fire rating for non-combustible material..
  • Class 1 Surface Spread of Flame - Non-combustible
  • Class ‘O’ to the Building Regulations - Euroclass A1
  • Density: 45kg/m3 - Excellent thermal and acoustic properties
  • Unfaced Slab - Odourless, Rot Proof, Non-Hygroscopic
  • Do not sustain vermin and will not encourage the growth of fungi, mould or bacteria.
£ 60.49
Ex Tax:£ 50.41
Estimated delivery: 5-7 working days
Brand: Rockwool® Model: 25mm White Tissue x2
25mm White Tissue Faced 2 Sides Rockwool Rockwool RW3 is a highly-durable class A1 fire resistant resin bonded wool insulation slab, used for structural elements such as roofs, concrete car park soffits and similar applications. An unique white tissue facings on both sides helps to avoid the slab..
  • 25mm Rockwool RW3 White Tissue Faced 2 Sides Insulation Slab
  • Strong A1 class, non-combustible fire resistant resin bonded slab
  • Provides from 30 minutes up to 240 minutes fire protection
  • Density 60kg/m3 Thermal conductivity (lambda) of 0.034 W/mK
  • For structural elements such as roofs, concrete car park soffits
£ 310.80
Ex Tax:£ 259.00
Estimated delivery: 3-5 working days
Brand: Rockwool® Model: 25mm White Tissue x1
25mm White Tissue Faced 1 Side Rockwool RW3 is a strong A1 class, non-combustible fire resistant resin bonded wool insulation slab, used for structural elements such as roofs, concrete car park soffits and similar applications. This individual white tissue facing helps to avoid the slab edges fro..
  • 25mm Rockwool RW3 White Tissue Faced 1 Side Insulation Slab
  • Strong A1 class, non-combustible fire resistant resin bonded slab
  • Provides from 30 minutes up to 240 minutes fire protection
  • Density 60kg/m3 Thermal conductivity (lambda) of 0.034 W/mK
  • For structural elements such as roofs, concrete car park soffits
£ 265.20
Ex Tax:£ 221.00
Estimated delivery: 3-5 working days
Brand: Rockwool® Model: 25mm RW5 Black Tissue x2
25mm Black Tissue Faced Both Sides RW5 is a highly durable A1 class, non-combustible fire resistant resin bonded stone wool insulation slab, used for structural elements such as concrete car park soffits and similar applications. Black Tissue Faced Both Sides Rockwool RW5 (Formerly ProRox® SL 960..
  • 25mm Rockwool RW5 Black Tissue Faced 2 Sides A1 Soffit Slab
  • Provides from 30 minutes up to 240 minutes fire protection
  • Used for structural elements such as concrete car park soffits
  • A1 class, non-combustible fire resistant stone wool insulation slab
  • RW5 Formerly ProRox® SL9 60 Thermal conductivity of 0.034W/mK
£ 269.88
Ex Tax:£ 224.90
Estimated delivery: 3-5 working days
Brand: Rockwool® Model: 25mm RW5 Black Tissue x1
25mm Black Tissue Faced Rockwool RW5 is a highly durable A1 class, non-combustible fire resistant resin bonded stone wool insulation slab, used for structural elements such as concrete car park soffits and similar applications. Rockwool RW5 Insulation Slab 25mm x 600mm x 1200mm with black tissue ..
  • 25x600x1200mm Rockwool RW5 Black Tissue Faced Slab A1
  • Formerly ProRox® SL960 Thermal conductivity of 0.034W/mK
  • Used for structural elements such as concrete car park soffits
  • A1 class, non-combustible fire resistant stone wool insulation slab
  • Provides from 30 minutes up to 240 minutes fire protection
£ 216.00
Ex Tax:£ 180.00
Estimated delivery: 3-5 working days
Brand: Rockwool® Model: 25mm White Tissue x2
25mm White Tissue Faced 2 Sides Rockwool RWA45 is a strong non-combustible fire resistant resin bonded wool insulation slab, used for structural elements such as roofs, concrete car park soffits and similar applications. White Tissue Faced Two Sides RWA45 (Formerly ProRox® SL 920) is a standard d..
  • 25mm Rockwool RWA45 White Tissue Faced Two Sides Slab x2
  • Semi-rigid, A1 non-combustible fire resistant insulation slab
  • Provides from 30 minutes up to 240 minutes fire protection
  • Density 45kg/m3 Thermal conductivity (lambda) of 0.035W/mK
  • Used for structural elements such as concrete car park soffits
£ 276.24
Ex Tax:£ 230.20
Estimated delivery: 3-5 working days
Brand: Rockwool® Model: 25mm White Tissue x1
25mm White Tissue Faced Rockwool RWA45 is a tough A1 class, non-combustible fire resistant resin bonded wool insulation slab, used for structural elements such as roofs, concrete car park soffits and similar applications. Rockwool RWA45 Insulation Slab 25x600x1200mm faced with white tissue on 1 s..
  • 25mm Rockwool RWA45 White Tissue Faced One Side Slab x1
  • Semi-rigid, A1 non-combustible fire resistant insulation slab
  • Provides from 30 minutes up to 240 minutes fire protection
  • Density 45kg/m3 Thermal conductivity (lambda) of 0.035W/mK
  • Used for structural elements such as concrete car park soffits
£ 253.56
Ex Tax:£ 211.30
Estimated delivery: 3-5 working days
Brand: Knauf® Model: 25mm RS100 Black Tissue x1
25mm Knauf RS100 Insulation Slab Black Tissue Faced One Side is a rigid A1 class, non-combustible fire resistant insulation slab, used for structural elements such as roofs, concrete car park soffits and similar applications. Knauf Rocksilk RS100 is a high density (100kg/m3) insulation slab with ..
  • 25mm Knauf RS100 Black Tissue Faced 1 Side Insulation Slab A1
  • High density 100kg/m3 Thermal conductivity (lambda) 0.034W/mK
  • Class A1 Non-combustible Rock Mineral Wool Insulation Slab
  • Provides from 30 minutes up to 240 minutes fire protection
  • Used for structural elements such as concrete car park soffits
£ 388.67
Ex Tax:£ 323.89
Estimated delivery: 3-5 working days
Brand: Knauf® Model: 25mm RS100 White Tissue x1
White Tissue Faced 1 Side Knauf RS100 Insulation Board 25mm is a rigid fire, thermal and acoustic class A1 insulation slab, used for structural elements such as roofs, concrete soffits and similar applications. Rocksilk RS100 is a high density (100kg/m3) insulation slab with a certified thermal c..
  • 25mm Knauf RS100 White Tissue Faced 1 Side Insulation Slab - 100kg
  • From 30 up to 240 minutes fire protection (1200x600x25mm slab)
  • Class A1 Non-combustible Rock Mineral Wool Insulation Slab
  • Density 100kg/m3 Thermal conductivity (lambda) of 0.034W/mK
  • Used for structural elements such as concrete car park soffits
£ 342.00
Ex Tax:£ 285.00
Estimated delivery: 3-5 working days
Brand: Knauf® Model: 25mm RS45 White Tissue x1
25mm White Tissue Faced 1 Side Knauf RS45 Insulation Slab is a rock mineral wool based, class A1 non-combustible insulation slab, used for structural elements such as roofs, concrete car park soffits and similar applications. The white tissue facing on one side helps to avoid the slab edges from ..
  • White Tissue Faced Knauf RS45 Insulation Slab 25x600x1200mm
  • Class A1 Non-combustible Rock Mineral Wool Insulation Slab
  • Provides from 30 minutes up to 240 minutes fire protection
  • Density 45kg/m3 Thermal conductivity (lambda) of 0.035W/mK
  • Used for structural elements such as concrete car park soffits
£ 311.88
Ex Tax:£ 259.90
Estimated delivery: 3-5 working days
Brand: Rockwool® Model: 25mm RW3 Black Tissue x2
25mm RW3 Double Sided Black Tissue Faced Soffit Slab is a thermal, fire and acoustic insulation slab particularly suited for providing fire resistance and thermal insulation through concrete car park soffits and similar applications. Black Tissue Faced Both Sides Rockwool RW3 (Formerly ProRox® SL..
  • Black Tissue Faced 2 Sides 25mm Insulation Slab Rockwool RW3
  • Soffit Slab for providing fire resistance and thermal insulation
  • Used for structural elements such as concrete car park soffits
  • A1 class, non-combustible fire resistant stone wool insulation slab
  • Provides from 30 minutes up to 240 minutes fire protection
£ 303.80
Ex Tax:£ 253.17
Estimated delivery: 3-5 working days
Brand: Rockwool® Model: 25mm RW3 Black Tissue x1
25mm Rockwool RW3 Black Tissue Faced Soffit Slab is a strong rigid, 60kg density non-combustible fire resistant resin bonded stone wool insulation slab, used for structural elements such as concrete car park soffits. Black Tissue Faced Rockwool RW3 (Formerly ProRox® SL 930) is a medium-density 60..
  • 25mm Rockwool RW3 Black Tissue Faced Insulation Slab A1
  • A1, non-combustible fire resistant resin bonded stone wool
  • Provides from 30 minutes up to 240 minutes fire protection
  • Density 60kg/m3 Thermal conductivity (lambda) of 0.034W/mK
  • Used for structural elements such as concrete car park soffits
£ 258.54
Ex Tax:£ 215.45
Estimated delivery: 3-5 working days
Brand: Rockwool® Model: 25mm RW3
25mm Rockwool RW3 Acoustic Insulation Slab (Prorox SL930) is a robust, medium-density (60kg/m3) non-combustible resin bonded semi-rigid fire resistant insulation slab designed for use in floors, roofs at rafter level, partitions, ceilings, timber and steel frame walls. Using RW3 Insulation in cei..
  • RW3 is rated Euroclass A1 non-combustible
  • Excellent thermal, acoustic and fire performance
  • RW3 insulation slabs achieve Lambda 0.034W/mK
  • RW3 is a robust insulation solution for a range of general building applications
  • Durable insulation solution which will maintain high performance over the lifetime of the building
£ 75.46
Ex Tax:£ 62.88
Estimated delivery: 5-7 working days
Brand: Rockwool® Model: 25mm RW5
25mm Rockwool RW5 Slab Acoustic, Fire and Thermal Insulation (Prorox SL960) is a strong, high-density (100kg/m3) non-combustible resin bonded rigid fire resistant insulation slab designed for use in floors, roofs at rafter level, partitions, ceilings, timber and steel frame walls. Using Rockwool ..
  • RW5 is rated Euroclass A1 non-combustible
  • Excellent thermal, Acoustic (100kg density) and fire performance
  • Rockwool RW5 insulation slabs achieve Lambda 0.034W/mK
  • RW5 is a robust insulation solution for a range of general building applications
  • Durable insulation solution which will maintain high performance over the lifetime of the building
£ 56.69
Ex Tax:£ 47.24
Estimated delivery: 5-7 working days
Brand: Rockwool® Model: 25mm White Tissue x1
25mm White Tissue Faced 1 Side Rockwool RW5 is a rigid A1 class, non-combustible fire resistant resin bonded stone wool insulation slab, used for structural elements such as roofs, concrete car park soffits and similar applications. The white tissue facing on one side helps to avoid the slab edge..
  • 25mm White Tissue Faced 1 Side Rockwool RW5 Insulation Slab
  • High-density 100kg/m3 and an excellent sound absorbing qualities
  • Provides from 30 minutes up to 240 minutes fire protection
  • Certified thermal conductivity (lambda value) of 0.034 W/mK
  • For structural elements such as roofs, concrete car park soffits
£ 246.00
Ex Tax:£ 205.00
Estimated delivery: 3-5 working days
Brand: Rockwool® Model: 25mm RWA45
25mm Rockwool RWA45 Acoustic Insulation Slab (Prorox SL920) is a robust, standard density (45kg/m3) non-combustible resin bonded semi-rigid fire resistant insulation slab designed for use in floors, roofs at rafter level, partitions, ceilings, steel and timber frame walls. Using RWA45 Acoustic In..
  • RWA45 is rated Euroclass A1 non-combustible
  • Excellent thermal, acoustic and fire performance
  • RWA45 insulation slabs achieve Lambda 0.035W/mK
  • RWA45 is a robust insulation solution for a range of general building applications
  • Durable insulation solution which will maintain high performance over the lifetime of the building
£ 60.56
Ex Tax:£ 50.47
Estimated delivery: 5-7 working days
Brand: Rockwool® Model: 25mm Black Tissue x2
25mm Black Tissue Faced 2 Sides Insulation Slab Rockwool RWA45 is an A1 class, non-combustible fire resistant resin bonded stone wool insulation slab, used for structural elements such as concrete car park soffits. Rockwool RWA45 Insulation Slab 25x600x1200mm with black tissue on 2 sides can prov..
  • Black Tissue Faced 2 Sides 25mm Rockwool RWA45 Insulation Slab
  • Class A1, non-combustible fire resistant resin bonded stone wool slab
  • Density of 45kg/m3 and thermal conductivity (lambda) of 0.035W/mK
  • Black tissue on 2 sides can provide from 30min up to 240min fire protection
  • For structural elements such as concrete car park soffits and similar applications
£ 322.78
Ex Tax:£ 268.98
Estimated delivery: 3-5 working days
Brand: Knauf® Model: 25mm RS60 White Tissue 2 Sides
25mm Knauf RS60 White Tissue Faced 2 Sides Insulation Slab is a robust A1 non-combustible slab, used as a fire, thermal and acoustic insulation for structural elements such as roofs and concrete car park soffits. Rocksilk RS60 is a medium density (60kg/m3) insulation slab with a certified thermal..
  • 25mm Knauf RS60 White Tissue Faced 2 Sides Soffit Insulation Slab
  • RS60 can provide from 30 minutes up to 240 minutes fire protection
  • Class A1 Non-combustible Rock Mineral Wool Core Insulation Slab
  • Density 60kg/m3 Thermal conductivity (lambda value) of 0.034W/mK
  • Used for structural elements such as roofs and concrete car park soffits
£ 375.07
Ex Tax:£ 312.56
Estimated delivery: 3-5 working days
Brand: Rockwool® Model: 25mm White Tissue x2
25mm RW5 White Tissue Faced Two Sides Slab is a 100kg/m3 density insulation slab faced with white tissue on both sides, used as a fire resistant, acoustic and thermal insulation for roofs, concrete car park soffits and similar applications. This special white tissue facings on both sides helps to..
  • Rockwool RW5 White Tissue Faced 2 Sides Insulation Slab 25mm
  • Robust A1 class, non-combustible fire resistant resin bonded slab
  • Provides from 30 minutes up to 240 minutes fire protection
  • Density 100kg/m3 Thermal conductivity (lambda) of 0.034 W/mK
  • For structural elements such as roofs, concrete car park soffits
£ 300.00
Ex Tax:£ 250.00
Estimated delivery: 3-5 working days
Brand: Knauf® Model: 30mm Knauf RS140
The 30mm Knauf RS140 is a rock mineral wool insulation slab with an excellent class A1 fire rating to BS EN 13501-1 used in multiple thermal and acoustic applications where 140kg/m3 density is critical. RS140 Rocksilk is manufactured with a density of 140kg/m3, designed for use in a variety of ap..
  • 30mm x 600mm x 1200mm Knauf Rocksilk RS140 (140kg/m3)
  • Class A1 Non-combustible Rigid Rock Mineral Wool Insulation Slab
  • Fire, thermal and acoustic insulation slab used for building applications
  • Manufactured in 140kg density per m3 - Class ‘0’ to Building Regulations
  • Used in floors, roofs at rafter level, partitions, ceiling, timber & steel frame
£ 182.70
Ex Tax:£ 152.25
Estimated delivery: 7-10 working days
Brand: Rockwool® Model: 30mm Rockwool RW6 140kg
30mm Rockwool RW6 (140kg) is a rigid class A1 non-combustible resin bonded insulation slab with an excellent fire, thermal and acoustic properties used for a wide range of building applications. Rockwool RW6 Slab is manufactured in 140kg density per cubic meter (140kg/m3), specially designed for ..
  • 30mm x 600mm x 1200mm Rockwool RW6 (140kg density) Class A1
  • Non-combustible resin bonded Rigid Stone Wool Insulation Slab RW6
  • Fire, thermal and acoustic slab used for a wide range of building applications
  • Manufactured in 140kg density per m3 - Class ‘0’ to Building Regulations
  • Used in floors, roofs at rafter level, partitions, ceilings, timber and steel frame walls
£ 175.12
Ex Tax:£ 145.93
Estimated delivery: 7-14 working days
Brand: Rockwool® Model: 30mm RW6 Double Sided Foil Facings (FFx2)
30mm Foil Faced 2 Sides Rockwool RW6 (140kg) is a foil faced and backed class A1 insulation slab with an excellent fire, thermal and acoustic properties used for a wide range of building applications. Foil Faced Two Sides (FFx2) Rockwool RW6 30x600x1200mm fire performance integrity is 240 minutes..
  • 30mm x 600mm x 1200mm Foil Faced x2 Sides Rockwool RW6 (140kg/m3)
  • Class A1 Non-combustible Rigid Stone Wool Insulation Slab Rockwool RW6
  • Fire, thermal and acoustic slab used for a wide range of building applications
  • Manufactured in 140kg density per m3 - Class ‘0’ to Building Regulations
  • Used in soffits, floors, roofs at rafter level, partitions, ceilings, walls
£ 913.64
Ex Tax:£ 761.37
Estimated delivery: 7-14 working days
Brand: Rockwool® Model: 30mm RW6 (FFx1) Foil Faced 1 Side
30mm Foil Faced Rockwool RW6 (140kg) is a foil backed class A1 non-combustible insulation slab with an excellent fire, thermal and acoustic properties used for a wide range of building applications. Rockwool RW6 Foil Faced x1 Side Slab 30x600x1200mm fire performance integrity is 240 minutes, and ..
  • 30x600x1200mm Foil Faced x1 Side Rockwool RW6 (140kg density m3)
  • Class A1 Non-combustible Rigid Stone Wool Insulation Slab Rockwool RW6
  • Fire, thermal and acoustic slab used for a wide range of building applications
  • Manufactured in 140kg density per m3 - Class ‘0’ to Building Regulations
  • Used in soffits, floors, roofs at rafter level, partitions, ceilings, walls
£ 830.56
Ex Tax:£ 692.13
Estimated delivery: 7-14 working days
Brand: Terrawool® Model: 30mm TW50 Terrawool
30mm Terrawool TW50 Acoustic Insulation Slab is a standard density (50kg/m3) non-combustible thermal and acoustic stone wool insulation slab used to insulate the floors, internal partition walls and separating wall applications. Terrawool TW50 Insulation Slab 30mm is a high-performance recyclable..
  • Terrawool TW50 Sound Insulation Slab
  • Acoustic Slab Density: 50kg/m3
  • Thermal and Acoustic Stone Wool Insulation
  • Thermal Conductivity: 0.035W/mK
  • Fire performance: Euroclass A1 Non-combustible
£ 53.88
Ex Tax:£ 44.90
Estimated delivery: 5-7 working days
Brand: Rockwool® Model: 50mm RW4 Double Sided Foil FFx2
50mm Foil Faced Two Sides Rockwool RW4 is used to prevent the spread of flames, heat, smoke and fire through concealed spaces in buildings, a rigid class A1 non-combustible resin bonded insulation slab. Rockwool RW4 Foil Faced 2 Sides Slab 50mm x 600mm x 1200mm fire performance integrity is 240 m..
  • Foil Faced x2 Sides Rockwool RW4 (80kg/m3) A1 Class 1200x600x50mm
  • Non-combustible resin bonded Rigid Stone Wool Insulation Slab RW4 (FFx2)
  • Fire, thermal and acoustic slab used for a wide range of building applications
  • Manufactured in 80kg density per m3 - Class ‘0’ to Building Regulations (FFx2)
  • Fire performance integrity is 240 minutes, and 60 minutes for the insulation core
£ 335.88
Ex Tax:£ 279.90
Estimated delivery: 7-14 working days
Brand: Rockwool® Model: Foil Faced 1 Side RW4 - 50mm
50mm Foil Faced Rockwool RW4 is used to prevent the spread of flames, heat, smoke and fire through concealed spaces in buildings, a rigid class A1 non-combustible resin bonded insulation slab. Rockwool RW4 Foil Faced Slab 50mm x 600mm x 1200mm fire performance integrity is 240 minutes, and 60 min..
  • Foil Faced x1 Side Rockwool RW4 (80kg/m3) A1 Class 1200x600x50mm
  • Non-combustible resin bonded Rigid Stone Wool Insulation Slab RW4
  • Fire, thermal and acoustic slab used for a wide range of building applications
  • Manufactured in 80kg density per m3 - Class ‘0’ to Building Regulations
  • Fire performance integrity is 240 minutes, and 60 minutes for the insulation core
£ 275.88
Ex Tax:£ 229.90
Estimated delivery: 7-14 working days
Brand: Knauf® Model: 50mm Flexible
50mm Knauf Rocksilk Flexible Insulation Slab is a functional thermal and acoustic multi-purpose rock mineral wool insulation slab which can be used to insulate a wide range of applications on site such as timber and metal stud partitions, timber frame walls and suspended timber floors. Knauf Flex..
  • Knauf - Rock Mineral Wool
  • Building Regulations: Class ‘O’ 
  • Non-Combustible - Euroclass A1
  • Thermal and Acoustic Insulation
  • Multi-Application - 60 minutes Fire Protection
£ 59.04
Ex Tax:£ 49.20
Estimated delivery: 3-5 working days
Brand: Rockwool® Model: 50mm Rockwool RW4 80kg
50mm Rockwool RW4 (80kg) is a robust, class A1 non-combustible resin bonded rigid insulation slab with an excellent fire, thermal and acoustic properties used for a wide range of building applications. Rockwool Stone Wool Insulation Slab if correctly installed exceeds the minimum requirements of ..
  • 50mm x 600mm x 1200mm Rockwool RW4 (80kg density) Class A1
  • Non-combustible resin bonded Rigid Stone Wool Insulation Slab RW4
  • Fire, thermal and acoustic slab used for a wide range of building applications
  • Manufactured in 80kg density per m3 - Class ‘0’ to Building Regulations
  • Used in floors, roofs at rafter level, partitions, ceilings, timber and steel frame walls
£ 71.88
Ex Tax:£ 59.90
Estimated delivery: 7-14 working days
Brand: Knauf® Model: 25mm - RS100 Black Tissue x2
25mm Knauf Rocksilk RS100 (100kg) Black Tissue Faced 2 Sides Insulation Slab is a strong and durable class A1 non-combustible rock mineral wool insulation slab, used for structural elements such as roofs and concrete car park soffits. Knauf Rocksilk RS100 is an ultimate (100kg per cubic metre den..
  • 25mm Knauf RS100 Black Tissue Faced Two Sides Insulation Slab
  • Density 100kg/m3 Thermal conductivity (lambda) of 0.034W/mK
  • Provides from 30 minutes up to 240 minutes fire protection
  • Class A1 Non-combustible Rock Mineral Wool Insulation Slab
  • Used for structural elements such as concrete car park soffits
£ 467.82
Ex Tax:£ 389.85
Estimated delivery: 3-5 working days
Brand: Rockwool® Model: Foil Faced 2 Sides RWA45 - 25mm
Foil Faced 2 Sides Fire Slab Rockwool RWA45 25mm is an aluminium foil faced both sides fire and acoustic stone wool core insulation slab developed to prevent the spread of flames and inhibit heat and smoke through concealed spaces in buildings. Rockwool RWA45 Foil Faced Two Sides Fire Barrier Sla..
  • Foil Faced 2 Sides Fire Slab Rockwool RWA45 25mm
  • Aluminium Foil Faced Both Sides Fire Barrier Slab
  • Developed to prevent the spread of flames and inhibit heat
  • Conform with the Building Regulations Approved Document B
  • Great fire performance classified as Euroclass A1 | Class 'O'
£ 528.90
Ex Tax:£ 440.75
Estimated delivery: 3-5 working days
Brand: Knauf® Model: 25mm RS100 White Tissue x2 Sides
25mm White Tissue Faced Two Sides Knauf Rocksilk RS100 Slab is a strong rock mineral wool based, class A1 insulation slab, used for structural elements such as roofs, concrete soffits and similar applications. The white tissue facings on both sides helps to avoid the slab edges from showing as sh..
  • 25mm Knauf RS100 White Tissue Faced 2 Sides Insulation Slab
  • From 30 up to 240 minutes fire protection (1200x600x25mm)
  • Class A1 Non-combustible Rock Mineral Wool Insulation Slab
  • Density 100kg/m3 Thermal conductivity (lambda) of 0.034W/mK
  • Used for structural elements such as concrete car park soffits
£ 432.00
Ex Tax:£ 360.00
Estimated delivery: 3-5 working days
Brand: Knauf® Model: 25mm RS60 White Tissue x1
25mm White Tissue Faced One Side Rocksilk RS60 Slab is an acoustic rock mineral wool based, class A1 non-combustible insulation slab, used for roofs, concrete car park soffits and similar applications. The white tissue facing on one side helps to avoid the slab edges from showing as shadows throu..
  • 25mm White Tissue Faced 1 Side Knauf RS60 60kg Insulation Slab
  • From 30 up to 240 minutes fire protection (1200x600x25mm slab)
  • Class A1 Non-combustible Rock Mineral Wool Insulation Slab
  • Density 60kg/m3 Thermal conductivity (lambda) of 0.034W/mK
  • Used for structural elements such as concrete car park soffits
£ 325.92
Ex Tax:£ 271.60
Estimated delivery: 3-5 working days
Brand: Rockwool® Model: 25mm Foil Faced RWA45
Rockwool RWA45 Foil Faced Fire Slab 25mm is an aluminium foil faced fire and acoustic stone wool core insulation slab developed to prevent the spread of flames. Foil Faced Slab is a simple butt joint product that can be used where fire resistant walls need to be continued above a ceiling into the..
  • Rockwool RWA45 Foil Faced Fire Slab 25mm
  • Aluminium foil faced fire and acoustic stone wool slab
  • Developed to prevent the spread of flames and inhibit heat
  • Conform with the Building Regulations Approved Document B
  • Great fire performance classified as Euroclass A1 | Class 'O'
£ 374.83
Ex Tax:£ 312.36
Estimated delivery: 3-5 working days
Brand: Rockwool® Model: 25mm Black Tissue x1
25mm Black Tissue Faced Insulation Slab Rockwool RWA45 is an A1 class, non-combustible fire resistant resin bonded stone wool insulation slab, used for structural elements such as concrete car park soffits. Rockwool RWA45 Insulation Slab 25mm x 600mm x 1200mm with black tissue on 1 side can provi..
  • 25mm Rockwool RWA45 Black Tissue Faced Insulation Slab
  • A1, non-combustible fire resistant resin bonded stone wool
  • Provides from 30 minutes up to 240 minutes fire protection
  • Density 45kg/m3 Thermal conductivity (lambda) of 0.035W/mK
  • Used for structural elements such as concrete car park soffits
£ 266.62
Ex Tax:£ 222.18
Estimated delivery: 3-5 working days
Brand: Knauf® Model: 30mm RS45 Black Foil Faced x1
30mm Black Foil Faced RS45 Knauf is a composite black foil faced on one side non-combustible rock mineral wool insulation slab with an excellent class A1 fire performance. Knauf RS45 1200mm x 600mm x 30mm black foil backed slab provides outstanding fire, thermal and acoustic performance for both ..
  • 30mm Black Foil Faced Knauf Rocksilk RS45 Insulation Slab A1 Class
  • Class ‘O’ to the Building Regulations and Class A1 fire performance
  • Density of 45kg/m3 with an excellent thermal and acoustic properties
  • Provides from 30 up to 240 minutes of fire protection (Foil Faced RS45)
  • Black Foil Faced Insulation Slab accumulates heat on one side of the board
£ 467.88
Ex Tax:£ 389.90
Estimated delivery: 5-7 working days
Brand: Knauf® Model: 30mm RS45 Black Foil Faced x2 Sides
30mm Black Foil Faced 2 Sides RS45 Knauf is a composite black foil faced on both sides non-combustible mineral wool insulation slab with an excellent class A1 fire performance. Knauf RS45 Black foil backed on both sides slab provides outstanding fire, thermal and acoustic p