The first step towards making a saving is to find out which sort of walls your home has. There are two main types of external wall: solid wall; and cavity. Most homes built after the early 1930s have cavity walls. That means your walls have an inner and outer layer separated by a small air gap.
This is a straightforward job that can be done in a day. It should always be done by a professional installer, who will inject insulating material from outside into the cavity by drilling small holes in the wall.
It causes little disruption and is surprisingly inexpensive considering the amount it will save you in the long run. It can reduce heat loss through walls by up to 60%.
Solid wall insulation can be either external or internal.
This is more complicated and costly than cavity wall insulation, and a professional installer should do the work. There are a number of ways this can be done: it might involve rendering insulating material directly onto the wall; applying rigid insulation boards reinforced with a decorative render finish; or a metal carrier system rendered over.
Various types of insulating material can be used: foam, mineral wool (rock or glass), or polystyrene beads. The cost depends on the type of material and the size of your house.
Professional installers will provide a 25-year guarantee from the:
This guarantees that any defect in materials or workmanship, in connection with the installation by a member installer, will be put right without charge to you.
Your home may already have some loft insulation, but if the material is thin, it won't be saving you as much as it could. Fitting proper loft insulation is the easiest and most cost-effective way of saving energy.
The thicker the material, the greater the saving. If you have older, thinner loft insulation, think about replacing it with new material at least 270mm (11") thick. This can save around 20% of your heating costs.
You can get loft insulation from any DIY store or builders' merchant. Make sure that you wear the correct safety clothing, or ask an installer to do the work for you.
There are 3 main types of loft insulating material:
blown mineral wool or blown cellulose fibre
mineral wool quilt
Only the latter 2 types are suitable if you are going to do the work yourself.
Heat loss is greater from certain areas such as around joists, so remember to lay the top 100mm (4") of insulation over the top of them.
You will need a boarded passage to enable you to reach tanks in the loft. Don't forget to insulate and draught proof the hatch too.
Good loft ventilation is essential to minimise the risk of condensation and subsequent wood-rot. Most homes already have adequate ventilation, but check yours anyway, just to be on the safe side.
If you would like any further information please contact us .