Menu
Menu
Your Cart

90mm Celotex Thermaclass Cavity Wall 21 - Rigid PIR Full Fill Cavity Insulation Board (pack of 6)

90mm Celotex Thermaclass Cavity Wall 21 - Rigid PIR Full Fill Cavity Insulation Board (pack of 6)
90mm Celotex Thermaclass Cavity Wall 21 - Rigid PIR Full Fill Cavity Insulation Board (pack of 6)
Price: £99.30 (£119.16 inc VAT)
Price per m2: £30.65/m2 (£36.78 inc VAT)
  • Product Code: A1-4775
  • Delivery Time: 2 - 4 days
  • Brand: Celotex
  • (Tech. support: 01473820850)
  • Model and Size: 1190x450mm - 3.24m2
  • Weight: 9.07kg
Our ratings on 21-05-2025:
Google My Business Reviews
4.8 out of 5
Show other thicknesses

90mm Celotex Thermaclass Cavity Wall 21 - Rigid PIR Full Fill Cavity Insulation Board (pack of 6)

Width: 450mm
Length: 1190mm
Pack Quantity: 6
Weight/m2: 2.8kg
Weight: 9.07kg
Thermal Conductivity: 0.021W/mK
R-Value: 4.25m2K/W
Fire Rating (Reaction to Fire): E

90mm Celotex Thermaclass Cavity Wall 21 is a high performance rigid PIR full fill cavity insulation board with low emissivity foil facings offering enhanced thermal performance (0.021 W/m.K) within cavity air spaces. It can be installed with up to a 10mm residual cavity or as a full fill solution with no residual cavity. Celotex Thermaclass Cavity Wall 21 is manufactured from rigid polyisocyanurate (PIR) using a blend of blowing agents that have zero ozone depletion potential (zero ODP) and low global warming potential (GWP).

APPLICATION

  • Full fill cavity insulation,
  • Can be installed with up to a 10mm residual cavity

CHARACTERISTICS
  • Excellent thermal performance, 
  • Lightweight and easy to install,
  • Tongue and groove for easy installation,
  • The boards are sized to fit standard cavity wall tie spacing,
  • Can be used up to 18 metres height (England and Wales),
  • Includes low emissivity foil facings giving improved thermal insulation performance within cavity air spaces,
  • Has excellent dimensional stability,
  • Provides reliable long term energy savings for buildings.
CERTIFICATION
  • BBA certified, 
  • Euroclass E Reaction to Fire classification, according to BS EN 13501-1,
  • Manufactured under Environmental Management System ISO 14001:2015,
Brand: Iko Model and Size: 1200mm x 2400mm - 11.52m2
Delivery Time: 2 - 3 working days
90mm IKO Enertherm ALU PIR Rigid Insulation Board is a versatile insulation board with a rigid polyisocyanurate (PIR) foam core, clad on both sides with reflective aluminium. The seven-layer gas-tight aluminium lamination enhances resistance to fire and water ingress. It’s made without CFC, HCFC, o..
Get Best Price
Brand: Celotex Model and Size: 1200x2400mm - 69.12m2
Delivery Time: Out Of Stock
100mm Celotex FI5000 is a premium flooring insulation board with enhanced thermal performance as well as an A rating when compared to the BRE Green Guide and an innovative cement compatible composite facer with a built-in vapour control layer (VCL), enabling direct screed, without the need for an ad..
Get Best Price
140mm Celotex Thermaclass Cavity Wall 21 - Rigid PIR Full Fill Cavity Insulation Board (pack of 4)
Guide Price
Brand: Celotex Model and Size: 1190x450mm - 2.16m2
Delivery Time: up to 7 days
140mm Celotex Thermaclass Cavity Wall 21 is a high performance rigid PIR full fill cavity insulation board with low emissivity foil facings offering enhanced thermal performance (0.021 W/m.K) within cavity air spaces. It can be installed with up to a 10mm residual cavity or as a full fill solu..
Guide Price: £112.76
£135.31 inc VAT
Get Best Price
Brand: Celotex Model and Size: 1200x450mm - 3.78m2
Delivery Time: 1 - 5 working days
70mm Celotex CW4000 is an insulation board aimed specifically at partial fill cavity wall applications. It comprises a polyisocyanurate rigid foam insulation core, with a thermal conductivity of 0.022 W/mK and low emissivity aluminium foil facings on both sides. CW4000 is manufactured from rigi..
Get Best Price
Brand: Celotex Model and Size: 1200 x 450mm - 51.84m2
Delivery Time: Out Of Stock
97mm Celotex CF5000 is specifically designed for use within full fill cavity wall applications. It is in compliance to UK Building Regulations by achieving a U-value of 0.18 W/m 2 K, maximising thermal performance without widening the cavity. BBA certified, Celotex CF5000 features a mechanically eng..
Get Best Price
Brand: Celotex Model and Size: TD4000- 2400 x 1200
Delivery Time: 1 - 5 working days
Celotex TD4000 comprises a polyisocyanurate rigid foam insulation core, with a thermal conductivity of 0.022 W/mK, and low emissivity aluminium foil facings on both sides bonded to a layer of 5.5mm WBP exterior grade plywood.APPLICATION Celotex TD4000 is purpose designed for use in light traffic ..
Get Best Price
Brand: Celotex Model and Size: 2400x1200mm - 2.88m2
Delivery Time: 1-3 working days
80mm Celotex GA4080 is a multi-purpose insulation board that provides a solution to overcome localized thermal bridges. Featuring a low emissivity foil facings, this board has been manufactured from tough polyisocyanurate (PIR) using a perfect mix of certain blowing agents which have zero ozone depl..
£38.36
£46.03 inc VAT
Add to Cart
This product is listed in the following categories and systems (click to show).