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 CelotexKingspan, 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:

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Showing 1 - 36 of 36 products in Insulation

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Showing 1 - 36 of 36 products

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SKU

K106/090

£94.80 Incl. VAT
£0.00 Incl. VAT
SKU

1994-580216

£45.00 Incl. VAT
£0.00 Incl. VAT
SKU

CW4100

£51.00 Incl. VAT
£0.00 Incl. VAT
SKU

K108-75

£108.00 Incl. VAT
£0.00 Incl. VAT
SKU

K108-100

£117.00 Incl. VAT
£0.00 Incl. VAT
SKU

CW4050

£51.00 Incl. VAT
£0.00 Incl. VAT
SKU

001994-715829

£44.40 Incl. VAT
£0.00 Incl. VAT
SKU

001994-715828

£37.20 Incl. VAT
£0.00 Incl. VAT
SKU

K108-50

£120.00 Incl. VAT
£0.00 Incl. VAT
SKU

CW4075

£51.00 Incl. VAT
£0.00 Incl. VAT
SKU

497108

£1,500.00 Incl. VAT
£0.00 Incl. VAT
SKU

CW4040

£59.70 Incl. VAT
£0.00 Incl. VAT
SKU

CW4060

£59.70 Incl. VAT
£0.00 Incl. VAT
SKU

497119

£34.80 Incl. VAT
£0.00 Incl. VAT
SKU

242290

£63.00 Incl. VAT
£0.00 Incl. VAT
SKU

551738

£63.00 Incl. VAT
£0.00 Incl. VAT
SKU

915725

£84.00 Incl. VAT
£0.00 Incl. VAT
SKU

915752

£72.00 Incl. VAT
£0.00 Incl. VAT
SKU

523355

£69.00 Incl. VAT
£0.00 Incl. VAT
SKU

K108/060

£117.00 Incl. VAT
£0.00 Incl. VAT
SKU

242293

£69.00 Incl. VAT
£0.00 Incl. VAT
SKU

K106-115

£118.80 Incl. VAT
£0.00 Incl. VAT
SKU

001994-715831

POA
£0.00 Incl. VAT
SKU

1994-316654

POA
£0.00 Incl. VAT
SKU

1994-316650

POA
£0.00 Incl. VAT
SKU

1994-316660

POA
£0.00 Incl. VAT
SKU

123361

POA
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Showing 1-36 of 36