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Celotex FR5000 Fire Resistant - General Purpose

Specialist Celotex Product, available in most thickness’s from the manufacturers, short lead-times apply to the following products FR5025, FR5040, FR5050, FR5060, FR5070, FR5075, FR5080, FR5090, FR5100, FR5120 and FR5150

Product Functions Celotex FR5000 installed in a timber frame wall application with insulated plasterboard Celotex GS5000

FR5000 is specifically targeted at pitched roof and wall applications, but is also entirely suitable for other applications, where improved fire performance is a requirement.

Celotex FR5000 is suitable for the following applications: between and over rafters, between and under rafters, between rafters, pitched roof sarking, ventilated lead covered flat roof, between and over flat roof joists, between and under flat roof joists, between and under ceiling joists, balconies and terraces, loft conversions, loft insulation, single timber frame wall lining, steel stud frame walls, timber frame wall lining, timber frame walls sheathing, external wall board, rainscreen cladding, beam and block floors, between floor joists, suspended timber floors, between and under floor joists, beam and block floors, concrete slab floors, upgrading concrete slab floors, basements, and garage conversions


Product Description

Celotex FR5000 is a new revolutionary fire resistant PIR insulation board specifically aimed at pitched roof and wall applications requiring Class 'O' fire rated performance. FR5000 is the most cost effective thermally efficient product offering Class O fire performance throughout the product – not just at the foam core! Offering enhanced thermal performance as well as an 'A' rating in the BRE Green Guide 2008, low GwP, and Class "O" fire performance throughout the entire product.

With its low emissivity textured aluminium foil facings on both sides, FR5000 is manufactured from rigid polyisocyanurate (PIR) using blowing agents that have low global warming potential (GwP) and zero ozone depletion potential (zero odP)

Product Benefits

Offering best in class performance, Celotex FR5000 is over 100% more thermally efficient than many mineral fibre products and up to 10% better than typical PIR.

Developed specifically for use in pitched roofs, floors and walls, Celotex FR5000 is a high performance insulation board that:

Has a lower thermal conductivity value (0.021W/mK) compared with other typical PIR insulation boards providing enhanced thermal performance and better U-values

Has super low emissivity value with Celotex IQ, delivering some of the highest performing PIR rigid board insulation solutions

Achieves an 'A+' rating when compared to the BRE Green Guide

Has Class O fire performance throughout the entire product in accordance with BS 476

Is suitable for a range of applications including pitched roofs, walls and floors

Future proofs the energy performance of new and existing buildings

Product availability indicators

FR5000 - Price and Availability Advisory:

Presently there are no availability restrictions.

Excellent = Product Availability Excellent Good = Product Availability Good Fair = Product Availability Fair Poor =  Product Availability Poor Undetermined = Product Availability Undetermined
Availability relies on stock levels at closest depots and upon transport logistics to effect deliveries

Technical Data

Celotex FR5000 PIR Insulation Boards for applications that require improved fire resistance

Product Code

Board dimensions

Thickness (mm)

λ Value (w/mK)

R-value (m²K/W)

U Value (W/m²K)

Weight (kg/m²)

Unit weight (kg)

Celotex FR5025 16 x 1.2 x 2.4 = 46.08m² 25 0.021 1.15 0.87 1.01 46.54
Celotex FR5040 10 x 1.2 x 2.4m = 28.80m² 40 0.021 1.90 0.53 1.49 42.91
Celotex FR5050 8 x 1.2 x 2.4 = 23.04m² 50 0.021 2.35 0.43 1.81 41.70
Celotex FR5060 7 x 1.2 x 2.4 = 20.16m² 60 0.021 2.85 0.35 2.85 57.46
Celotex FR5070 6 x 1.2 x 2.4 = 17.28m² 70 0.021 3.30 0.30 2.48 42.85
Celotex FR5075 6 x 1.2 x 2.4 = 17.28m² 75 0.021 3.55 0.28 2.64 45.62
Celotex FR5080 6 x 1.2 x 2.4 = 17.28m² 80 0.021 3.80 0.26 2.80 48.38
Celotex FR5090 5 x 1.2 x 2.4 = 14.40m² 90 0.021 4.25 0.24 3.12 44.93
Celotex FR5100 12 x 1.2 x 2.4 = 34.56m² 100 0.021 4.75 0.21 3.38 116.81
Celotex FR5120 10 x 1.2 x 2.4 = 28.80m² 120 0.021 5.70 0.18 4.02 115.78
Celotex FR5150 8 x 1.2 x 2.4 = 23.04m² 150 0.021 7.10 0.14 4.98 114.74

Thermal conductivity / Lambda value (W/mK) = 0.021 | Compressive strength (kPa) = ≥ 120 | Water vapour resistance (MNs/g) = > 150 | Please Note: R-Value = Thermal Resistance; U Value = Thermal Transmittance Co-efficient; Compressive strength = kiloPascals; Vapour resistance = MegaNewton seconds per gram.

Product Information and Certification

Links to manufacturer's information. Click to download in a separate browser window.

  • Celotex FR5000

    Celotex FR5000 is ideal for partial fill cavity wall that require the benefits of increased fire resistance protection

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    Celotex FR5000 partial fill cavity wall offers increased fire resistance protection
  • GD5000 and GS5000

    Premium performance insulated plasterboards for plaster dab, and mechanical fixing 1.2 x 2.4 metres board sizes

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    GD5000 and GS5000 premium performance insulated plasterboards for plaster dab, and mechanical fixing
  • Kingspan TW53

    Kingspan TW53 designed for wall insulation to be used behind traditional and lightweight polymer modified renders

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    Kingspan TW53 wall insulation behind traditional and lightweight polymer modified renders
  • Kingspan K12

    Kingspan Kooltherm K12 is a premium performance Phenolic Foam rigid insulation board designed wall framing systems

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    Kingspan Kooltherm K12 premium performance Phenolic Foam rigid board for wall framing systems

Product Installation - Celotex FR5000

Please see installation information for General Applications such as GA4000, TB4000, XR4000 & CW4000

Contact Manufacturer

Celotex Limited

Lady Lane Industrial Estate, Hadleigh, Ipswich, Suffolk, IP7 6BA

Celotex Technical Advisory Service.

Telephone: 0901 996 0100 (30p per minute) - Fax: 01473 820 889
Web sites: Celotex Home Page / Celotex U-Value Calculator.

Contact us

Insulation Online Limited

Sales Office only:39 Normandy Road, Worthing, West Sussex, BN14 7DX, UK

Telephone: 0333 8000 828


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