25mm Unilin FR/ALU previous known as 25mm Xtratherm FR/ALU stands out as a top-tier Polyisocyanurate flat roof insulation featuring vapor-tight aluminum foil facings, making it compatible with single-ply membranes. It is an integral component within Unilin's extensive selection of high-performance flat roof boards, offering complete solutions for flat roof projects.
Brand: Unilin Insulation FR/ALU known as Xtratherm FR/ALU
Model: 25mm Unilin FR/ALU
Thickness: 25mm
Thickness: 25mm, 30mm, 40mm, 50mm, 60mm, 70mm, 75mm, 80mm, 90mm, 100mm, 110mm, 120mm, 125mm, 130mm, 140mm, 150mm
Length: 2400mm
Width: 1200mm
Board Coverage: 2.88m2
Pack Coverage: 34.56m2
Pack Quantity: 12 sheets
Pack Weight: 35.92kg
Dimensions: 2,400mm x 1,200mm x 25mm
Thermal Conductivity: 0.022 W/mK
R-Value: 1.125 m2K/W
Colour: Light yellow
Density: 32 Kg/m3
Compressive Strength: > 150kPa
Material: Polyisocyanurate Rigid Foam ( PIR insulation board )
Profile: Square Edge
Fire Reaction: Euroclass B, s2-d0
Finish: Vapour resistant gas-tight foil
Inner facing: Foil Facing
Outer facing: Foil Facing
Applications: Flat Roof Waterproofing Systems
BBA Certified: Yes (No. 11/4817)
Fixing method: Mechanically fixed single ply waterproofing systems
Foil faced: Yes, gas-tight foil facings on both sides
Features: Composite gas-tight foil facings on both sides
Manufacturer: Unilin InsulationĀ®
The 25mm Unilin FR/ALU Thin-R Flat Roof Insulation Board is composed of a rigid polyisocyanurate PIR insulation board featuring gas-tight foil facings on both sides.
Designed for thermal insulation and enhancing slopes on restricted-access concrete, timber, or metal flat roof decks in both new and existing buildings, the 25mm Flat Roof Board FR/ALU serves a dual purpose.
When used in conjunction with a vapor control layer and a mechanically fixed single-ply roof waterproofing membrane, 25mm Unilin FR/ALU Insulation Board is optimized for performance.
Installation of FR/ALU flat roof boards involves laying them over the vapor control layer in a break-bonded pattern, providing effective coverage.
To ensure secure placement, 25mm Unilin Thin-R flat roof insulation boards should be affixed using approved mechanical fixings.
Consideration should be given to the recommendations of BS 4841: Part 3 and those of the Single Ply Roofing Association.
The fall on a flat roof should be constant and steep enough to ensure that rainfall does not pond.
The fire rating, when tested to EN 13501-5 and BS 476 Part 3 āExternal Fire Exposure Roof Testā, will be dependent upon waterproofing system specified.
Note: This board was formerly known as 25mm Xtratherm Thin-R FR/ALU Flat Roof PIR Insulation Board
Have a browse of our Xtratherm stock and filter by thickness or coverage on the left-hand side of the page. If youād like to talk through the suitability of some products for your project, or get a quantity discount quotation please call us by phone on +4402039519012 , email sales@insulationstoreonline or Live Chat - Lowest UK Roof Insulation Board Prices.













