Cavity wall insulation boards are an insulation material designed specifically to be applied to the application of partial fill masonry wall applications within residential and commercial buildings. The boards are made up of a polyisocyanurate (PIR) core with foil facings bonded to each size. The boards are generally 1200mm x 450mm in size made to fit between wall ties. The boards range in thicknesses between 40mm and 100mm.
Cavity Wall Insulation Board
What are the benefits of cavity wall insulation boards?
- Cavity wall insulation boards improve the thermal quality of the property. This means a more temperature-controlled environments with cooler summers and warmer winters. Thermal quality means less drafts, less heat escaping the property and amore comfortable living and working space.
- High Performance Facer – Low emissivity foil facing provides improved thermal performance in sealed cavity air spaces, improving the achievable U-value.
- By preventing heat and energy escaping the property you will save money on your energy bills as less energy will be needed to heat your property.
- With less heat escaping, it will have positive effect on the global warming and climate change, making your property more energy efficient and sustainable.
- When installed correctly, cavity wall insulation boards will have a lifespan for as long as the building itself.
- Cavity wall insulation boards are lightweight and easy to cut, handle, and install.
Cavity wall insulation boards should be installed between the inner leaf (blockwork) and outer leaf (brickwork) of the wall, as the wall is being built. A layer of blocks should be built, and the wall ties fitted within the blocks. The boards are then fitted in between the wall ties. Each board should have a minimum of three wall ties and extra should be applied when installing around windows and door openings. The boards should be closely butted together, and tape applied to the joins to avoid thermal bridging. The process is then repeated until the wall is complete.
Ensure excess mortar is wiped away whilst the wall is being constructed.
The boards can be cut by measuring and marking the boards and cutting with a fine-toothed saw, or scoring with a sharp knife, snapping over a hard edge, and then scoring the other side.
A building professional should always be consulted before installed cavity wall insulation to confirm the product is the right fit for your property and to prevent insulation causing damage to the property. Always ensure the product meets the relevant national building regulations. Celotex products should not be used in the external walls of buildings over 18 metres in height (England and Wales) or 11 metres in height (Scotland)
Ensure the property is clear of damp or rot before the insulation is installed.