Our house is quite exposed. Two bedrooms are at the rear of the house and are north facing. The walls are built of cavity blocks. A few years ago we insulated all of the bedrooms with insulated plasterboards but the two bedrooms at the rear are still cold. We should have used thicker plasterboards probably. Would it make any sense to put external insulation on the back wall of the house? We could not afford to do the whole house.
I just wonder if having insulation on the inside of a cavity block wall would prevent the wall heating up and having the heat retained by the external insulation, defeating the purpose of it. And we really do not want to take down the existing insulated plasterboard. It was messy last time and I do not want to go through all that again. Thanks.
I just wonder if having insulation on the inside of a cavity block wall would prevent the wall heating up and having the heat retained by the external insulation, defeating the purpose of it. And we really do not want to take down the existing insulated plasterboard. It was messy last time and I do not want to go through all that again. Thanks.