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100mm Xtratherm SW/RS Stone Wool Insulation Slab (pack of 2)

100mm Xtratherm SW/RS Stone Wool Insulation Slab (pack of 2)
100mm Xtratherm SW/RS Stone Wool Insulation Slab (pack of 2)
100mm Xtratherm SW/RS Stone Wool Insulation Slab (pack of 2)
100mm Xtratherm SW/RS Stone Wool Insulation Slab (pack of 2)
100mm Xtratherm SW/RS Stone Wool Insulation Slab (pack of 2)
100mm Xtratherm SW/RS Stone Wool Insulation Slab (pack of 2)
100mm Xtratherm SW/RS Stone Wool Insulation Slab (pack of 2)
  • 100mm Ventilated Rainscreen Cladding Slab Xtratherm SW/RS
  • Non-combustible euroclass A1 stonewool insulation slab
  • For ventilated rainscreen cladding systems in high rise buildings
  • Certified thermal conductivity (lambda value) of 0.035 W/mK
  • Ventilated facade, soffit, rainscreen and framing applications
Estimated delivery:
In Stock
£ 71.88
Ex VAT: £ 59.90
  • Brand: Xtratherm®
  • Model: 100mm Xtratherm SW/RS
  • Weight: 6.48kg
  • Dimensions: 1,200mm x 600mm x 100mm
  • SKU: 100mm SW/RS
  • Product code: P1-2672
  • MPN: 100mm Xtratherm SW/RS

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100mm Xtratherm SW/RS Stone Wool Insulation Slab is a high density non-combustible A1 stonewool insulation slab with an improved acoustic performance used for ventilated rainscreen cladding systems in standard and high rise buildings.

The SW/RS range of stone wool insulation provides surety when the highest fire performance is required and resilience during the build process for the application of mechanically fixed substrates.

Xtratherm SW/RS Stone Wool Rainscreen Insulation 100mm is suitable for use in ventilated facade, soffit, rainscreen and framing applications and closed systems such as curtain walling.

Utilising StoneWool in new build and refurbishment projects contributes to reducing the lifetime production of harmful emissions from buildings, minimising heating and cooling demand.

Stonewool Rainscreen insulation has a certified thermal conductivity (lambda value) of 0.035 W/mK.

Xtratherm SW/RS should be installed in accordance with instructions issued by the facade engineer.

Rainscreen Cladding Slabs are available in standard 1200mm x 600mm size with square edge profile.

Xtratherm SW/RS Rainscreen Insulation is CFC and HCFC free and is manufactured using a blowing agent with a low GWP and zero ODP.

SW/RS Stonewool is manufactured from a natural and plentiful resource and is recyclable.

Stone Wool Slabs are lightweight and can be easily cut to any shape with a fine tooth saw or a sharp knife.




Thickness: 100mm

Width: 600mm

Length: 1200mm

Pack Quantity: 2

Slab Coverage: 0.72m²

Pack Coverage: 1.44m²

Profile: Square Edge

R-Value: 2.85m2K/W

Thermal Conductivity: 0.035W/mK

Density: 45kg/m3

Material: stonewool insulation slab

Facings: unfaced

Fire Classification: Euroclass A1


Xtratherm SW/RS Rainscreen Slab Features:

 · Euroclass A1 Fire classification.

 · Robust high density insulation.

 · Improved acoustic performance.

 · Highest fire performance.

 · Suitable for use in high rise buildings.

 · CFC and HCFC free.

 · Thermal conductivity (lambda value) of 0.035 W/mK.

 · Non-combustible stone wool insulation slab.

 · Suitable for both new build and refurbishment projects.

 · Minimising heating and cooling demand.

 · Available in standard 1200mm x 600mm size.


Ventilated Rainscreen Cladding Xtratherm SW/RS Installation:

 · Xtratherm Stonewool is delivered in packs wrapped in polythene suitable for short term storage in the open.

 · For longer periods of storage packs should be stored off the ground and under cover.

 · The high density panels are robust enough to endure a reasonable length of time exposed during installation, however as with all building processes, protection during the build process should be provided where possible.

 · Breather membranes if specified within the system will provide additional protection.

 · Panels are lightweight and easily cut to any shape with a fine tooth saw or a sharp knife.

 · Neat fitting to adjoining boards and around any penetrations is essential to achieve good thermal performances.

 · Tight abutment with adjoining boards allows for continuity.

 · Boards should be applied in a break-bonded pattern.

 · With all joints tightly butted.

 · Using a combination of metal and polypropylene ‘mushroom’ type fixings with a minimum diameter of 70mm will provide adequate fix until the main cladding system is applied.

 · All penetrations, through the insulation layer, at floor junctions and openings should be accounted for in the thermal calculations.

 · For advice on rainscreen fixings, contact the system specifier, ensuring all fixings are accounted for when modelling thermal performance.

 · Suitable Board Fixing Manufacturers - Hilti, EJOT, Fischer, Rawlplug Fixings and W-M MLN Fixings.


*Further information may be found in our Downloads section.

Fairly easy access to all PDF files.

Datasheet ǀ Declaration of Performance - DoP ǀ BBA Certificate ǀ Installation Guide ǀ Certificates ǀ Brochure ǀ SPEC Sheet 

*Special Product - Non returnable cancelable.

Board covarage 1.44 m2
Density 45kg/m3
Length 1200mm
Material Stone wool insulation slab
Pack Coverage 1.44m2
Pack Quantity 2 slabs
Profile Square Edge
R-Value 2.85m2K/W
Size 100mm x 600mm x 1200mm
Thermal Conductivity 0.035W/mK
Thickness 100mm
Weight/m2 4.50kg
Width 600mm
Fire Classification Euroclass A1
Coverage 0.72m² / board
Finish Unfaced
Quantity 2 slabs per pack
Application Temperature from +5 °C to +25 °C
Shipping method Articulated Vehicle ǀ Courier
Applications Ventilated rainscreen cladding systems
ETA Notification Yes
Features Non-combustible A1 stone wool insulation slab
Manufacturer Xtratherm®

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We deliver insulation materials to Mainland UK only. Deliveries to Highlands, Northern Ireland, Isle of Wight etc.. might be possible at additional cost.
We offer free delivery on most of the orders above £300 (excluding VAT) (except special products - shipping cost via courier - products marked ''Request A Quote'')

Delivery of some insulation materials might be extended due to the current situation (Covid-19, stock shortages, allocations).
If you need materials quickly please contact us - we will do our best to help you source materials needed.

We do not deliver on weekends and bank holidays. Sometimes we can deliver on Saturdays - please check with us before placing the order.
If you need any further information please contact us tel. 02081910776

We can help to calculate price per m2 or linear meter (one meter in length) cost, please just contact us via phone 02081910776, email or live chat. Alternatively, you can work it out yourself quickly and easily: to get cost per meter square please divide price shown in orange area by ''Required area (m2)'' Example price of £28.80 divided by board coverage 2.88m2 = cost of £10.00 per m2.


No matter whether you choose a local installer or a national company, there’s a few tips to help you find the right installer for your home insulation improvements, such as asking for recommendations and making sure that they’re part of a certification scheme. This makes sure that they have the right skills and standards of workmanship to carry out the installation, and you can be sure that they know exactly what they are doing.


1. Thermal inspection picture in portfolio

It’s worth seeing a installer’s previous work. There’s no harm asking if you can see any properties nearby that they’ve installed insulation in. Best way would be to see Infrared Thermal Imaging Inspections. Thermal cameras spot small, but key changes in temperature in different areas of a house, identifying problematic areas that the human eye never could and some that a visual inspection could only hypothesize.

2. Reviews

Along with checking recommendations and previous work, finding reviews online can often be a great way to find out if they provide a good service or not. However, it’s best not to solely rely on reviews you may find or review websites, as there’s no controlling who writes them.

3. Compare prices

Comparing prices will also ensure companies can’t take advantage of you and give you a fair price. 

4. Word of Mouth

The best way to find a great insulation installer is through recommendations. Make sure you ask friends and family. They will most likely give you their honest opinion and can tell you from first hand experience.


Whether you require a wall, cladding, external wall, loft or floor insulation fitted, you can find and hire your local insulation installers from popular UK web pages. A simple internet search will return thousands of potential installers near your area.



We are the stockist of construction materials and related products for both trade and DIY from most recognizable brands in the UK like Cordek, RCM, Promat, Rockwool, Isover, Celotex, Xtratherm, Ursa, Low-E, Cedral, Kingspan, Dufaylite, British Gypsum, K-rend, Ecotherm, Iko enertherm, Kay-Metzeler, Terrawool to allow you to complete your insulation job on time at competitive prices and the highest standards.


Whether you are a large company or a DIYer, if you need a large amount of insulation materials, we can offer quantity discounts at the best prices. Please contact us and our friendly customer service will try to find the best and cheapest solutions for you. We value your time and we will try to deliver the products as soon as possible at a reasonable price to your construction site or house. The UK's leading insulation supplier near you and your needs. Price List available upon request.
100mm Xtratherm SW/RS Stone Wool Insulation Slab (pack of 2)
100mm Xtratherm SW/RS Stone Wool Insulation Slab (pack of 2)
£ 71.88