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25mm SR/PR Safe-R Phenolic Roof Insulation Board Xtratherm ǀ pack of 12

25mm Xtratherm Safe-R SR/PR Superior Performance Phenolic Insulation - Pitched Roofs
25mm SR/PR Safe-R Phenolic Roof Insulation Board Xtratherm ǀ pack of 12
  • BBA Certification No. 10/4803
  • Thermal Conductivity: 0.021W/mK
  • Reaction to Fire Euroclass B-s1, d0
  • Reduced Thermal Bridging and Risk of Condensation
  • Lightweight and Easy to Install - Superior Performance Phenolic Insulation
Estimated delivery:
In Stock
£ 582.35
Ex VAT: £ 485.29
  • Brand: Xtratherm®
  • Model: 25mm SR/PR
  • Dimensions: 2,400mm x 1,200mm x 25mm
  • SKU: 25mm
  • Product code: P1-1085
  • MPN: 25mm SR/PR Xtratherm Safe-R

Options available

25mm Xtratherm Safe-R SR/PR Pitched Roof Insulation Board is a high-class rigid phenolic foam insulation board with a low emissivity foil facings designed for pitched roofs, sloped roofs, ventilated roofs, hybrid roofs and warm roofs.

Xtratherm SR/PR range is a BBA certified high-efficiency thermal insulation with an approved thermal conductivity (lambda value) as low as 0.021W/mK.

SR/PR 2400mm x 1200mm x 25mm roof insulation board is suitable for industrial and commercial buildings (new build and refurbishment) to save money by reducing the heat loss.

The composite foil facings on both sides of the SR/PR board incorporate an integral vapour barrier, which helps to reduce the risk of condensation.

Safe-R premium insulation provides the most efficient U-Values with minimal intrusion into valuable living space.

The roof construction is a critical element in the building fabric and is an area at high risk of heat loss.

Using SR/PR will reduce heat loss while also delivering excellent thermal bridging details.

Warm Roof construction is a particularly effective way of insulating complex roofs. 

Safe-R products are stable, rot proof and will remain effective for the life span of the building (depending on specification and installation).

Insulating above and between the roof timbers ensures that the structure is kept at or near the internal environmental conditions, reducing thermal stress and condensation risk.

Safe-R SR/PR is a superior performance phenolic insulation with a Euroclass B fire classification.

The phenolic foam insulation boards can be readily cut using a sharp knife or fine toothed saw.

When it comes to health and safety, Xtratherm boards are chemically inert and safe to use.




Width: 1200mm

Length: 2400mm

Pack Quantity: 12

Pack Coverage: 34.56m2

Profile: Square Edge

R-Value: 1.05m2K/W

Thermal Conductivity: 0.021W/mK

Compressive Strength: >120 (kPa)

Reaction to Fire: Euroclass B-s1, d0


Key points:

 · BBA Certified.

 · Superior performance rigid phenolic insulation.

 · Euroclass B -s1 d0 fire classification.

 · Avoids intrusion into living area.

 · Suitable for newbuild, retrofit and refurbishment.

 · Thermal conductivity (lambda value) of 0.021 W/mK.

 · Reduced thermal bridging.

 · Reduced risk of condensation.

 · Lightweight and easy to install.

 · Integral vapour control layer.

 · Reduced insulation thickness.

 · Standard size 2400mm x 1200mm (8 x 4) boards.

 · Suitable for pitched, sloped, ventilated, hybrid and warm roofs.


Handling, Cutting and Storage:

 · Xtratherm insulation should be stored off the ground, on a clean flat surface and must be stored under cover. 

 · The polythene wrapping is not considered adequate protection for outside exposure. 

 · Care should be taken to protect the insulation in storage and during the build process.

 · Appropriate PPE should be worn when handling insulation.


Certification and standards:

 · BBA Certification No.10/4803.

 · BS EN ISO 9001 Quality Management System.

 · BS EN ISO 14001 Environmental Management System.

 · BS EN 13166.


*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 34.56 m2
Compressive Strength >120 (kPa)
Length 2400mm
Material Phenolic resins
Pack Coverage 34.56m2
Pack Quantity 12
Profile Square Edge
R-Value 1.05m2K/W
Thermal Conductivity 0.021W/mK
Thickness 25mm
Width 1200mm
Fire Classification Euroclass B-s1, d0
Coverage 34.56m2
Finish Low emissivity foil facings
Quantity 12
Shipping method Articulated Vehicle ǀ Courier
Applications Roofs: pitched, sloped, ventilated, hybrid
BBA Certified Yes (no. 10/4803)
Vapour Control Layer Yes
ETA Notification Yes
Features Phenolic Foam ǀ Vapour Barrier
Manufacturer Xtratherm Safe-R®

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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.
25mm Xtratherm Safe-R SR/PR Superior Performance Phenolic Insulation - Pitched Roofs
25mm SR/PR Safe-R Phenolic Roof Insulation Board Xtratherm ǀ pack of 12
£ 582.35