I moved into a new house not long ago and one off the thing that came up in the survey was that there is not insulation in the roof. I had a look myself and there truly is no insulation at all!
I have read a number of post on the forum to find out what solutions are available: Glasswool, (knauff) for cold roof and Celotex/Kingspan for warm roof.
My problem is that my roof is sort of a mix of both! The top floor room are partially in the roof. i.e. on one side of the room the ceiling is pitched to follow the roof, in the rest of the room it’s flat. The only thing separating the room and the roof space is lath and plaster.
1-To insulate the pitched part I guess I can only go for Celotex/Kingspan and try to slide it down the gap between the lath and plaster and the roof tiles or is there any other alternatives?
2-If I use celotex/kinspan in the pitched part of the roof, should I just use it as well to insulate between rafters in the flat part? Or can I switch to Glasswool for that section?
3- How can I work out what thickness to use to ensure the insulation will be adequate/ meet building regs?
Thanks
John
I have read a number of post on the forum to find out what solutions are available: Glasswool, (knauff) for cold roof and Celotex/Kingspan for warm roof.
My problem is that my roof is sort of a mix of both! The top floor room are partially in the roof. i.e. on one side of the room the ceiling is pitched to follow the roof, in the rest of the room it’s flat. The only thing separating the room and the roof space is lath and plaster.
1-To insulate the pitched part I guess I can only go for Celotex/Kingspan and try to slide it down the gap between the lath and plaster and the roof tiles or is there any other alternatives?
2-If I use celotex/kinspan in the pitched part of the roof, should I just use it as well to insulate between rafters in the flat part? Or can I switch to Glasswool for that section?
3- How can I work out what thickness to use to ensure the insulation will be adequate/ meet building regs?
Thanks
John