we have recently purchased a semi detached home built in approx 1960 s which has cavity walls. the cavity has been filled in the last 10 years with fibre insulation. this would bring the u value of the external walls to approximately 0.6. I would like to get the walls down to approximately 0.20 0.25 u value. I would like to do this by installing celotex 50 millimetre solid wall insulation on the inside of the eeternal walls.
my first question is will this cause any problems?
My second question is can anyone explain the coerect fitting method around Windows to reduce the likelyhood of bridging?
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!