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 06-06-2025:

4.8 out of 5
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..
Brand: Celotex
Model and Size: 1200x2400 - 28.80m2
Delivery Time: 1 - 5 working days
115mm Celotex TA4000 PIR Insulation Board (pack of 10)
Size: 1200mm x 2400mm
Area per pack: 28.80m2
Thermal conductivity: 0.022 W/Mk
R-Value: 5.20m2K/W
Compressive strength: ≥150kPa
Water vapour resistance: >150 MNs/g
Weight: 3.89kg/m2
Celotex ..
Brand: Celotex
Model and Size: 1200x600mm - 34.56m2
Delivery Time: Pre-Order
150mm Celotex Crown-Up is a brand new product for use in flat roof systems. Representing the next phase of Celotex innovation, Crown-Up is a high performance rigid polyisocyanurate (PIR) insulation which delivers increased dimensional stability and added robustness in a built-up flat roofing sy..
Guide Price: £1,765.97
£2,119.16 inc VAT
Brand: Celotex
Model and Size: FF4000 1200x2400 - 40.32m2
Delivery Time: 3 - 5 days
85mm Celotex FF4000 Underfloor Heating Board (pack of 14) | FF 4085
Size: 1200mm x 2400mm
Area per pack: 40.32m2
Thermal conductivity: 0.022 W/Mk
R-Value: 3.85m2K/W
Compressive strength: ≥150kPa
Water vapour resistance: >150 MNs/g
Weight: 2.93kg/m2
&..
Brand: Celotex
Model and Size: 1200x2400 - 2.88m2
Delivery Time: 1 - 5 working days
Celotex PL4015 is a high performance thermal insulation board where the 15mm PIR insulation is bonded to 12.5mm tapered edge plasterboard. PL4015 is manufactured from rigid polyisocyanurate (PIR) using a blend of blowing agents that have zero ozone depletion potential (zero ODP) and low global warmi..
Brand: Celotex
Model and Size: FF4000 1200x2400 - 69.12m2
Delivery Time: 3 - 5 days
50mm Celotex FF4000 Underfloor Heating Board (pack of 24)
Size: 1200mm x 2400mm
Area per pack: 69.12m2
Thermal conductivity: 0.022 W/Mk
R-Value: 2.25m2K/W
Compressive strength: ≥150kPa
Water vapour resistance: >150 MNs/g
Weight: 1.81kg/m2
Celotex FF..
Brand: Celotex
Model and Size: EL3000 1200x600 - 2.88m2
Delivery Time: 3 - 5 days
Celotex EL3000 provides a quick and easy method of achieving effective thermal insulation in flat roofing structures. With coated glass tissue facings, EL3000 is manufactured from rigid Polyisocyanurate (PIR) using a blend of blowing agents that have zero ozone depletion potential (zero ODP) and a l..