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Brick Superstore£96.00Visit shop Celotex Green Cw4060 Cavity Wall Insulation Board 1200M X 450 X 60Mm - 5.4M2 Pack Pir
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The Celotex CW4000 is an ideal choice for contractors and builders focused on improving the thermal envelope of new builds and extensions using partial fill cavity wall construction. It provides exceptional thermal efficiency with a low 0.022 W/mK conductivity, though it requires precise installation to ensure air gaps remain sealed to maintain its performance properties.
| Model Part Number | CW4000 |
|---|---|
| Brand | Celotex |
The Celotex CW4000 has a low thermal conductivity of 0.022 W/mK.
No, the CW4000 is specifically engineered for partial fill cavity wall applications.
Yes, it should be stored in a dry, covered area away from direct moisture and long-term UV exposure to protect the integrity of the foil facing.
It is BBA certified and has achieved a BRE Green Guide Rating of A.
Yes, it is suitable for both new build projects and extensions where cavity wall construction is used.
Verify the spacing of your wall ties matches the local standard and trim the board slightly if there is an obstruction, but maintain the tight fit against the inner leaf.
Small tears can be repaired with high-quality aluminium foil tape to restore the emissivity properties of the board surface.
Installation should be carried out according to the design specifications for the wall type. Boards should be kept dry and protected from heavy rain or prolonged exposure to sunlight before installation. Ensure the cavity is kept free of mortar droppings during the brickwork process to prevent thermal bridges. When cutting is required, use a fine-tooth saw in a well-ventilated area, and ensure that personal protective equipment is used to minimize dust inhalation. The product is compatible with most traditional masonry cavity wall structures.
