Cavity wall insulation could save you £420 on your energy bills

Why do I need cavity wall insulation?

If your home was built after the 1920’s there is a high chance that it has got cavity walls.

It was only in the 1990s that homes started to be built with insulation within the cavity at the time of construction. If your home was built before then you may not have any insulation at all.

Around a third of heat lost in a home is via uninsulated walls. Figures from the Energy Saving Trust show that you could make significant savings by insulating your walls – around £240 for a typical gas heated semi-detached house.

What is cavity wall insulation?

There are a couple of different types of cavity wall insulation used, however, the one we use involves the injection of graphite enhanced polystyrene beads into the gap between the inner and outer walls.

By filling the gap between the two walls heat loss through the wall is slowed, resulting in a warmer home for you. By having a warmer home you will also reduce the likelihood of condensation and mould on the walls.

The polystyrene beads also means that the cavity can continue to work in the way it was originally intended. This means that any moisture which finds its way into the gap is able to safely wick away and not reach the inside of your home.

All cavity wall insulation completed by GRS ECO comes with a 25 year insurance backed guarantee for peace of mind.

How do I know if I’ve got a cavity wall?

If you can see the brickwork pattern on the outside of your home, have a look at the pattern of bricks.

If you only see long bricks in an even pattern, it’s likely you have got cavity walls.

If, however, you have an alternating patter of long and short bricks, it is likely that you have got solid walls.

If the brickwork has been covered up, you can also tell by measuring the thickness of the wall from a window opening. If the wall is more than 26cm thick then it probably has a cavity, but, if it’s thinner – usually around 22cm or 9 inches – then it’s probably solid.

Stone walls will usually be much thicker.

If you’ve got solid walls – or one of the other types of walls, such as timber frame – we can still help you with internal or external wall insulation.