Cavity Wall Insulation
Cavity wall insulation is installed between the inner and outer walls of your property. The cavity is insulated with either insulation boards or rolls and is done one of two ways: a full cavity fill or a partial fill. It's great for reducing heat loss, lowering energy consumption, and enhancing overall comfort. It's also essential for effective energy efficiency and thermal insulation of the building.
Full cavity insulation fill is when the gap between the inner and external walls is completely filled with either foam boards or mineral wool. A partial fill is when foam board is fitted securely against the inner wall, leaving a gap for ventilation between the external wall and insulated layer. Full cavity wall insulation is perfect for more modern structures, whilst partial cavity wall insulation is better suited to older properties and retrofits. It is advised you get a professional to install it to avoid thermal bridging.
Regardless of whether you opt for a partial fill or full fill cavity insulation process, cold can transfer through the walls and cause cavity wall damp, which is only going to lead to major issues if not dealt with. Installing cavity wall insulation reduces this issue, creating a more comfortable living environment for improved thermal performance.
Materials vary from PIR to glass wool and phenolic foam. PIR is a firm favourite amongst cavity wall insulation materials, but there are plenty of other solutions to ensure you have the ideal material to suit your requirements.
Discover various cavity insulation products from leading brands like Celotex, Kingspan, and Knauf. If you're unsure which is the best cavity wall insulation for your property, get in touch with our excellent customer service team using the helpline or chat box in the bottom right. We'll be happy to provide you with a no-obligation, free quote. You can rely on our UK-fast delivery for reliable, efficient service.
Cavity insulation not right for your project? We also stock:
Not sure what insulation you need? Read our helpful guides below:
Products in Insulation:
Showing 1 - 36 of 36 products
Celotex CW4100 Cavity Wall Insulation Board 1200mm x 450 x 100mm - 3.24m2 Pack
£51.00 incl VAT
You Save: £3.00
Was:
£54.00
Celotex CW4050 Cavity Wall Insulation Board 1200 x 450 x 50mm - 5.94m2 Pack
£51.00 incl VAT
You Save: £3.00
Was:
£54.00
Celotex CW4075 Cavity Wall Insulation Board 1200 x 450 x 75mm- 4.32m2 Pack
£51.00 incl VAT
You Save: £1.80
Was:
£52.80
Knauf DriTherm 32 125mm Ultimate Cavity Wall Slab - 87.36m2 Pallet
£1,500.00 incl VAT
Celotex 40mm Cavity Wall Insulation Board CW4040 1.2m x 450mm - 7.56m2 Pack
£59.70 incl VAT
You Save: £6.30
Was:
£66.00
Celotex 60mm Cavity Wall Insulation Board CW4060 1.2m x 450mm - 5.4m2 Pack
£59.70 incl VAT
You Save: £3.90
Was:
£63.60
Showing 1-36 of 36
