How do I determine if I have solid walls or cavity walls?
Properties built after the 1920s typically have cavity walls. The cavity is the gap created by two walls of brick.
Older properties built circa pre-1920s most commonly have solid brick or stone walls with no cavity. Most
properties are fairly straight forward when determining your wall type. Properties built after 2005 are most
likely to have insulation installed in them from new.
Solid walls brick pattern … full brick, half brick, full brick (See an example below)
Cavity walls brick pattern … full brick, full brick, full brick (See an example below)
If the brick pattern on your property is not exposed, the surveyor would be able to look for different signs (i.e
depth of windowsill ) to determine your property’s wall type.
Tell-tale signs of your property being insulated previously
Cavity walls, of course! To check this, look for signs that your walls have been drilled in a pattern. If your
property has been rendered or repointed you might be able to see holes within the mortar line. (This is usually
easier to spot under the windows or in the corners of a property).
Remember, to check your energy performance certificate (EPC) as it is indicated on there). These records
should be accurate but it’s always best to have your walls double checked for insulation if you’re unsure or
have moved in with no cavity wall certificates.
Important! Is your property suitable?
Rumours of cavity wall insulation being harmful to your property have spiralled from an unsuitable property
being insulated with foam materials in the past.
Cavity wall insulation materials have been thoroughly tested over the years before they are approved by BBA
(British Board of Agrement). Materials have to be fitted in accordance with the manufacturer requirements
including adhering to the drill pattern that is designed to ensure an even layer of insulation is spread inside the
cavity before certification.
Government Licensed and Registered Installers will provide you with a guarantee and adhere to high
compliance standards that are monitored within the industry.
External and Internal wall insulation has always been a very costly improvement until now.
Government grant funding has been extended to help those occupants with solid walls. Having solid
walls uses more energy to heat the home, costing more on energy bills. Insulation will make drastic
savings and dramatically improve your property’s energy efficiency and market value.
Complete our quick application form to find out more information and one of our specialists will be able to
help.