Hi
We have bought a house which had the loft 'converted' in the 1980's to a room. It didn't have building regs and the previous owner didn't use it as a habitable room, more of storage room and study at times.
The house has a centre wall which goes down to the foundations and the floor joists sit and overlap this, front to back. The staircase is not high enough to pass building regs and to be fair, we don't plan to use it as a habitable room as such but I would like to use it as a home office when I work from home.
There is minimal insulation over the rafters, its basically 10mm polystyrene sheets which have then been wallpapered over so it looks ok but clearly useless for insulation meaning its sweltering in the summer and freezing in the winter. There is a single skylight but opening it does little in the summer.
I don't need or want building regs spec but I would like to insulate it better so I am thinking of getting 50mm PIR between the rafters (rafters are 100mm so need 50mm air gap) and then just plasterboarding over the top.
Would this do enough to help insulation enough to use the space in summer/winter? I could add insulated board on top but I am conscious of not losing too much space up there.
Ta
We have bought a house which had the loft 'converted' in the 1980's to a room. It didn't have building regs and the previous owner didn't use it as a habitable room, more of storage room and study at times.
The house has a centre wall which goes down to the foundations and the floor joists sit and overlap this, front to back. The staircase is not high enough to pass building regs and to be fair, we don't plan to use it as a habitable room as such but I would like to use it as a home office when I work from home.
There is minimal insulation over the rafters, its basically 10mm polystyrene sheets which have then been wallpapered over so it looks ok but clearly useless for insulation meaning its sweltering in the summer and freezing in the winter. There is a single skylight but opening it does little in the summer.
I don't need or want building regs spec but I would like to insulate it better so I am thinking of getting 50mm PIR between the rafters (rafters are 100mm so need 50mm air gap) and then just plasterboarding over the top.
Would this do enough to help insulation enough to use the space in summer/winter? I could add insulated board on top but I am conscious of not losing too much space up there.
Ta
