Did you know that solid walls let out as much as twice the heat that cavity walls do? Insulating these solid walls, perhaps from both the inside and outside, can make a huge difference for energy efficiency and cutting costs. External walls from older structures (homes and buildings from the 1950s or before) can be a huge but hidden money sink for you. Don’t let these walls cost you another unnecessary penny in heating or cooling costs. External wall insulation may be the solution to a problem you never even knew you had.
Studies are showing that external wall insulation can save you around £490 every year. When roughly 45% of your heat is escaping through these walls, simply letting it continue is really costing you money.
Solid walls lack the gap of air that cavity walls contain, and warm air likes to loiter in this gap, keeping the heat of your home or business locked inside. Instead of tearing down these solid walls and rebuilding, one option is to insulate from the inside, the outside, or even both. It will cost more to insulate a solid wall than a cavity wall, this is unfortunate but true, but the savings on your heating bills will also be much larger. Additionally, you could be saving up 1.9 tonnes of carbon dioxide per year with external wall insulation.
External wall insulation isn’t hard to install and can be put in without disturbing the interior of your home. It improves the outward appearance of your home’s walls as well as increasing weatherproofing and soundproofing. If you’re planning on having any other work done to the exterior walls of your home, you’ll find that getting external insulation installed at the same time will result in a good amount of money saved.
Insulating a solid wall makes financial good sense, but be sure to check that it complies with current Building Regulations, in this case based on the thermal performance of the solid wall. Your installer will generally ensure that this is the case but it never hurts to ask and be sure you comply.
Many privately owned older homes were built with solid walls, so you may be a victim of huge heat loss every winter and not even know! An installer can take a look at the exterior of your home and let you know what sort of walls you have right away and can help you determine if they might be costing you money.
If you choose to do the work yourself, there are a number of suppliers of suitable products on the market such as Jablite and Celotex.