Your Cart

162mm Soffit Liner Insulated Fire Board Class A1 (RWA45 & Promat)

162mm Soffit Liner Insulated Fire Board Class A1 (RWA45 & Promat)
162mm Soffit Liner Insulated Fire Board Class A1 (RWA45 & Promat)
162mm Soffit Liner Insulated Fire Board Class A1 (RWA45 & Promat)
162mm Soffit Liner Insulated Fire Board Class A1 (RWA45 & Promat)
162mm Soffit Liner Insulated Fire Board Class A1 (RWA45 & Promat)
162mm Soffit Liner Insulated Fire Board Class A1 (RWA45 & Promat)
162mm Soffit Liner Insulated Fire Board Class A1 (RWA45 & Promat)
  • 162mm Soffit Liner Insulation Board A1 Class Non-combustible
  • 50mm and 100mm Rockwool RWA45 bonded to 12mm Masterboard Promat
  • Up to 180 min Fire Protection - Easy to decorate with paints, wallpapers or tiles
  • Increased impact resistance and durability in addition to improved fire safety
  • Effective fire resistance, acoustic and thermal insulation for concrete soffits
Estimated delivery:
In Stock
£ 413.88
Ex VAT: £ 344.90
  • Brand: Rockwool®
  • Model: 162mm Soffit Liner (RWA45)
  • Weight: 36.01kg
  • Dimensions: 1,200mm x 600mm x 162mm
  • SKU: 162mm Soffit Liner (RWA45)
  • Product code: P1-3003
  • MPN: 162mm Soffit Liner (RWA45)

Options available

The 162mm Soffit Liner Insulated Fire Protection Board is a combination of 50mm and 100mm Rockwool RWA45 Insulation Slab bonded to 12mm Masterboard used to provide fire resistance, acoustic and thermal insulation.

Soffit Liner Boards are manufactured using non-combustible Rockwool RWA45 insulation slab faced with 12mm Promat Masterboard, fire and moisture resistant reinforced calcium silicate building board.

This unique combination of two fire rated products provides increased impact resistance and durability in addition to improved fire safety and ease to decorate with paints, wallpapers or tiles.

Insulated Soffit Liner Fire Board 162mm provides a cost effective solution where a thermal, fire or acoustic performance is required in concrete car park soffits and similar applications.

The Masterboard facing is resistant to the effects of moisture and will not physically deteriorate when used in damp or humid conditions and will not encourage mould or bacteria growth.

These 1200mm x 600mm x 162mm composite insulation panels are suitable for use as an insulated underlining solution in semi exposed structural soffits such as open-sided car parks.

Soffit Liner is an easy to handle lightweight but strong composite board that can be easily cut to accommodate services and simply butt joined together.

The thermal performance and acoustic insulation provided by the soffit liner non-combustible fire board is highly effective.

Thermal conductivity of Rockwool RWA45 insulation core is 0.035W/mK and 0.22W/mK for 12mm Masterboard Promat.




Thickness: 162mm (overall)

Length: 1200mm

Width: 600mm

Masterboard thickness: 12mm

Rockwool RWA45 thickness: 150mm

Board coverage: 0.72m²

Masterboard Thermal conductivity: 0.22W/mK

Rockwool RWA45 Thermal conductivity: 0.035W/mK

Masterboard material: Calcium-silicate

Rockwool RWA45 material: Stone wool

Masterboard density: 975kg/m³

Rockwool RWA45 density: 45kg/m³

Fire Reaction Class: A1, non-combustible

Rockwool RWA45 R-Value: 4.25m2K/W

Vapour resistivity: Negligible, Water Repellent

Building regulations: Class 0

Fire Protection: Up to 180 minutes


162mm Soffit Liner Board Features:

 · Non-combustible.

 · Highly durable.

 · Vermin resistant.

 · Fire resistant.

 · Class A1 fire rated.

 · Class 0 to building regulations.

 · Can be easily decorated.

 · Moisture and weather resistance.

 · Increased impact resistance.

 · Chemical stability.

 · Lightweight but strong composite board.

 · Great acoustic performance.

 · Dimensional stability.


162mm Soffit Liner Insulation Board Installation Guide:

 · When commencing installation it is advised to start with a soffit liner board at the centre of the soffit when fixing a tile or modular system.

 · It is important to ensure that all the following boards will be fixed outwards towards each edge.

 · To aid in safeguarding the alignment of the installation, it is advised to use string lines or laser alignment equipment.

 · Each Soffit Liner Board should be fixed using e.g. Ejot DDS fixings with the Ejot DDT70 washer or similar, direct to the concrete soffit.

 · Pre-drill board and concrete to a depth of 5mm more than the anchor length.

 · Insert fixing and hammer or screw tight to line and level.

 · Care should be taken not to damage the surface of the liner boards by over-tightening the fixing.

 · Light fittings and services should be supported from the concrete soffit.

 · Do not use Soffit Liner Boards to support these types of installations.


*Further information may be found in our Downloads section.

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

*Special Product made to order (might be subjected to minimum order quantity and/or extended lead time).

*Non returnable cancelable once ordered.

Board covarage 0.72 m2
Colour Light Brown ǀ Greyish
Density 975kg/m³ Masterboard ǀ 45kg/m³ RWA45
Fire Protection (Resistance to Fire) Up to 180 minutes
Length 1200mm
Material Calcium-Silicate ǀ Rockwool Stone Wool
Profile Square Edge
R-Value 4.25m2K/W (RWA45)
Size 162mm x 600mm x 1200mm
Thermal Conductivity Masterboard 0.22W/mK ǀ RWA45 0.035W/mK
Thickness 162mm
Weight/m2 50.01kg
Width 600mm    
Fire Classification A1 Non-combustible
Vapour Resistivity Negligable, Water Repellent
Building Regulations Compliant ǀ Class 0
Coverage 0.72m2
Finish 12mm Promat Masterboard ǀ Rockwool Stone Wool RWA45
Shipping method Articulated Vehicle ǀ Courier
Sound insulation reduction from 40dB to 55dB
Applications Soffits ǀ Semi-exposed Concrete Floors
Fixing method Fire Rated Fixings with Washer
Decoration Paints, Wallpapers or Tiles
ETA Notification Yes
Features Can provide up to 180 minutes fire protection
Manufacturer Promat® Rockwool®

Write a review

Note: HTML is not translated!
Bad Good

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.
162mm Soffit Liner Insulated Fire Board Class A1 (RWA45 & Promat)
162mm Soffit Liner Insulated Fire Board Class A1 (RWA45 & Promat)
£ 413.88