It is also the only type that can be used for both interior and exterior building insulation . Foam board can be a DIY ...

but even the most energy efficient systems can largely go to waste without appropriate exterior wall insulation and ceiling ...

A homeowner who fell foul of planners after installing external insulation on his house without planning permission is facing ...

if they are in that part of the house. We've worked with the Royal Institution of Chartered Surveyors* (RICS), which publishes average building work and repair costs, to bring you the average cost for ...