Hi are there any disadvantages to getting cavity wall insulation done such
as noticable holes all over the walls? My house, a semi detached upstairs
downstairs, was built in 1992 and has a cavity wall with the inside wall
breeze block with foam backed plasterboard stuck to it. Was supposed to be
the best insulation at the time. The outside wall is white with small stones
thrown at it while the white stuff was still wet. I can never remember what
that is called. Something like harralling?
anyway is there an advantage to getting cavity wall insulation with my type
of walls and if so why was it not done when the house was built?