Did you know that around a third of all heat lost in an un-insulated home is through the walls? Insulating cavity walls reduces heat loss and can save you around £115 a year on your fuel bills. Warmwall are expert installers and have prepared the following information for you.
If your home was built from 1920 onward, the chances are that its external walls are made of two layers with a small gap or ‘cavity’ between them. This means that they are ‘cavity’ walls.
Cavity wall insulation is an effective way to save energy and money at home. A well insulated house keeps warmth exactly where you need it – indoors. So, insulating your cavity walls will help you to heat your home more efficiently. Using less energy reduces carbon dioxide emissions (CO2): one of the biggest causes of climate change. You will also save money on fuel bills. Insulating can also help to reduce condensation inside the house if it is a problem on external walls.
How does cavity wall insulation work?
Heat will always flow from a warm area to a cold one. The colder it is outside, the faster heat from your home will escape into the surrounding air. Cavity wall insulation slows down the rate at which it escapes, keeping as much of it as possible in your home for as long as possible.
How? Insulation makes it much more difficult for heat to pass though your walls by filling up the cavity with a material which has lots of air pockets in it. These pockets trap heat, cutting what is known as the U value.
The U value measures how quickly it loses heat so the lower the U value, the less energy you need to keep your home warm. You may on occasions also see references to an R value. An R value is a measure of thermal resistance and is the inverse of a U value so the higher the R value the better. For professional installers, cavity walls are simple to insulate. The external walls of a house are actually made of two walls, an inner wall and outer wall, with a gap of at least 50mm between the two.
Cavity wall insulation is so cost effective that it will pay for itself over and over again. The better insulated your home, the less energy you need to keep it warm – the more money you’ll save in the long run.
By saving energy, your household will produce less CO2. So, insulating your walls is a great way to do your bit, fight climate change – and reduce your impact on the environment.
If everyone in the UK insulated, we could save around £690 million and nearly four million tonnes of CO2.
Wamwall are expert Wall Insulation Installers offering services in the
- Portsmouth areas.
Warmwall are also leading loft insulation installers in the South.