I converted my garage a few years ago, followed all advice from the building regs officer and did everything by the book, but the room is so cold in the winter and I've had enough! Now I want to get to the bottom of it!
The front (old garage door) has a window now, and now 150mm celotex (I added more!)
The existing garage side wall had a cavity stud wall with 50mm celotex, and I added another 50mm celotex-backed plasterboard in an effort to fix the problem. So that should be fine.
I've added double loft insulation, and made sure to try and tuck it into corners, as I had the feeling cold crept down corners of the room.
(and borrowed a thermal camera too)
I've even drilled and squirted expanding foam in places I felt may be colder than they should.
There are two areas, as I can see it, that could be the big issues.
Which one (or is it both?) do people think are the worst issue now?
There's one wall, where the garage meets the house, where I was advised to dot-and-dab plasterboard directly onto the exterior brickwork of the house. Every other wall had celotex, the other single layer garage brick walls had a cavity stud wall and celotex, but he said I didn't need to there. That's wrong surely, the cold exterior wall of my house surely carries the cold? It's certainly cold to the touch.
The floor is the other thing - I was told they were allowed to be flexible with how much insulation was needed, and it turned out that, to meet the existing floor height at the threshold to the house, 50mm of celotex, plus floorboard came to the right height exactly. Is 50mm celotex over the old concrete floor of the garage enough?
I'm hoping the floor isn't the biggest problem - as I can't raise it! There would be a step up into the room, and the ceiling is already low. Not to mention how hard it would be to empty the room and lift the existing floor!
I'd love to know anyone's opinions. Not sure who I could call to visit for advice. I called one company about a thermal survey but they wanted £500 to visit!!
Thanks
The front (old garage door) has a window now, and now 150mm celotex (I added more!)
The existing garage side wall had a cavity stud wall with 50mm celotex, and I added another 50mm celotex-backed plasterboard in an effort to fix the problem. So that should be fine.
I've added double loft insulation, and made sure to try and tuck it into corners, as I had the feeling cold crept down corners of the room.
(and borrowed a thermal camera too)
I've even drilled and squirted expanding foam in places I felt may be colder than they should.
There are two areas, as I can see it, that could be the big issues.
Which one (or is it both?) do people think are the worst issue now?
There's one wall, where the garage meets the house, where I was advised to dot-and-dab plasterboard directly onto the exterior brickwork of the house. Every other wall had celotex, the other single layer garage brick walls had a cavity stud wall and celotex, but he said I didn't need to there. That's wrong surely, the cold exterior wall of my house surely carries the cold? It's certainly cold to the touch.
The floor is the other thing - I was told they were allowed to be flexible with how much insulation was needed, and it turned out that, to meet the existing floor height at the threshold to the house, 50mm of celotex, plus floorboard came to the right height exactly. Is 50mm celotex over the old concrete floor of the garage enough?
I'm hoping the floor isn't the biggest problem - as I can't raise it! There would be a step up into the room, and the ceiling is already low. Not to mention how hard it would be to empty the room and lift the existing floor!
I'd love to know anyone's opinions. Not sure who I could call to visit for advice. I called one company about a thermal survey but they wanted £500 to visit!!
Thanks