Cavity Wall Insulation


Cavity wall insulation is an effective and simple way to save money on company overheads and improve the energy efficiency of a commercial or public building.

Significantly cutting down heat loss, reducing fuel bills and harmful CO2 emissions, adequate insulation also helps to meet your key environmental targets.

Key Benefits

How it works

If your property was built post-1920, it most likely has a cavity wall construction. This means the property's external walls are comprised of two layers with a gap (or cavity) between them. In a typical cavity wall building, 35% of its heat is lost through the walls. Cavity wall insulation prevents this heat loss by filling this gap with insulation. 

To fill this gap, an installer would drill small holes (around 22mm in size) at intervals of approximately 1m in the outside walls of your home. With specially designed equipment, the installer then blows insulation into the cavity. Solarwall use insulation made from white mineral wool, which will not settle, crack, burn, transmit water, or deteriorate with age. Once all the insulation is installed, the installer fills the holes in the brickwork, which are barely noticeable.

If you have any questions about cavity wall insulation, our Frequently Asked Questions page may be of help to you.

We have experience working with businesses of all sizes - including schools, community halls and public buildings - and always offer the very best value and quality. We have over 36 years of experience as loft and cavity wall installers.

If you are interested in cavity wall insulation or require more information, please contact us - you can speak to one of our Energy Team, who are trained to offer you the most up-to-date and accurate information.


Our insulation comes with an independently backed, 25 year guarantee from CIGA, the Cavity Insulation Guarantee Agency.


For more information, or a free, no obligation quote call us on 0800 138 0079

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