Cavity walls didn’t really start to be used in general building until the early 1930s, so knowing the age of your home is the first useful step in figuring out if you have them. If your home was built after 1930 then it’s highly likely you have cavity walls.
Another useful trick is to look at the pattern of your house bricks. A regular pattern of bricks – where all the bricks are laid on the long side – usually means you have cavity walls.
But please don’t worry about checking before getting in touch with us. We’ll assess your property thoroughly to see if you have cavity walls or cavity wall insulation when we come to see you.