Exterior Wall Insulation
When insulating existing walls, blown in wall insulation is the most effective way of getting the job done. But some old buildings where there is very little or no cavity in the walls prove to be quite difficult to insulate in this way. This is where the method of exterior wall insulation comes into play, and sometimes proves to be the only effective solution.
The most common and popular method is using wall foam insulation. Polystyrene foam tiles are directly attached to the outside of the building, which in some cases is the only option.
When this method first came onto the market, there were very few options to the look of the exterior insulation. But today, there are many materials and colors available, including stone, timber or brick finish. This means that you can make your home look just like you want it to, by either applying a certain color, or have it blend into its surroundings with a timber cladding.
One of the biggest advantages of this form of insulating existing walls is that, when done properly, will pretty much eliminate cold and damp air penetrating the interior of a building. But if you have an existing problem with rising damp, then this is something you should have looked at by professionals first, as exterior wall insulation will not solve this problem.
With insulation applied to the exterior, it is important to consult professionals to do the installation, unless you are very confident in your DIY skills. It is very easy to get this kind of job wrong, and when not done correctly you could end up wasting an awful lot of time and money on wall foam insulation that does not solve your problems.
A great advantage of exterior insulation over interior insulation is that it can be done without disrupting the household, as all the work is done on the outside. However, be prepared to spend quite a lot of money to get the job done right. This still means that you get great savings per year, but it will probably take more than 10 years for you to get a financial return on your investment. When it comes to insulating the exterior of a building it is usually more about comfort of getting rid of a dampness problem, when blown in wall insulation is not an option.