We've got a 1950 build solid brick semi detached house. The hallway is always cold and is the largest room facing an outside wall and never gets any sun on it .
We need to re-plaster so we were was thinking about putting up insulated plasterboard. We don't have much room to loose but it starts at 22mm for Knauf Thermal Laminate which has a u value rating of 0.038.
We could only easily fit in the hallway ground, first floor and above the stairway. Would this cause problems as it wasn't a complete coverage off the wall ? We could do under the stairs as well but we'd have to work around the stairs so you'd have a strip where nothing would be insulated.
The roof and floorboards are fully insulated already and external solid wall insulation is very expensive.
We need to re-plaster so we were was thinking about putting up insulated plasterboard. We don't have much room to loose but it starts at 22mm for Knauf Thermal Laminate which has a u value rating of 0.038.
We could only easily fit in the hallway ground, first floor and above the stairway. Would this cause problems as it wasn't a complete coverage off the wall ? We could do under the stairs as well but we'd have to work around the stairs so you'd have a strip where nothing would be insulated.
The roof and floorboards are fully insulated already and external solid wall insulation is very expensive.