We have a detached bungalow with an open porch area approx 3m x 1.1m. The bungalow roof (and gable end) overhangs this porch supported by the property wall on 2 sides and a brick pillar in the far (front) corner which shall be retained.
I want to enclose the porch area. Others have done this by just using UPVC frame and glazing ( the walls are not load bearing) but we are not keen on this. We would like to brick up the 2 open sides (and have small windows) but the narrow width precludes using a cavity block wall. The 2 main alternatives would seem to be a stud wall with internal insulation (and vapour barrier etc) or a single block wall with external insulation like Kingspan ( the external finish will be stone cladding / internal finish to plaster).
Which method would allow the best insulation (u value)? Are there "special" lightweight insulated blocks for this type of job ( I read somewhere less dense blocks have better insulation values). Any better suggestions? The enclosed porch will be heated so the aim is best insulation value for a circa 200mm thick wall to allow a finished internal width of 0.9m
I want to enclose the porch area. Others have done this by just using UPVC frame and glazing ( the walls are not load bearing) but we are not keen on this. We would like to brick up the 2 open sides (and have small windows) but the narrow width precludes using a cavity block wall. The 2 main alternatives would seem to be a stud wall with internal insulation (and vapour barrier etc) or a single block wall with external insulation like Kingspan ( the external finish will be stone cladding / internal finish to plaster).
Which method would allow the best insulation (u value)? Are there "special" lightweight insulated blocks for this type of job ( I read somewhere less dense blocks have better insulation values). Any better suggestions? The enclosed porch will be heated so the aim is best insulation value for a circa 200mm thick wall to allow a finished internal width of 0.9m