Recent content by GAC

Okay thank you both! Fairly certain there's good ventillation between the rafters, maybe a bit too drafty infact! I'll use 50mm PIR so there's a 50mm air gap behind it. Thanks for your advice!

It's a pitched roof, and quite low headheight. only 100mm depth in the rafters. I'm installing an inline extractor fan which is fairly overspeced for the size of the space.

Thanks! Another problem I have just thought of is the one downlight there is and mainting the vapour barrier there.... The only solution I can seem to find online is to cut a square out of the 50mm PIR, foil tape some 25mm PIR over the back of the hole, so that I have a 50mm deep hole to fit...

Heya, I want to insulate the ceiling in the bathroom, which is also the roof at the top of the building. Wondering what's the best option or if there's any special considerations for this scenario? Does there need to be a vapour barrier? (or use foil backed plasterboard?) The rafters are 100mm...

Ok Great! Thanks for the help

Afraid not, just a 100 year old brick wall!

@noseall thanks for your response! Just so I'm clear... should the first layer of PIR go ontop of the batterns so that there's a gap between it and the brick wall? It's not a cavity wall, just an old 100 year old brick wall. Is it then okay to fix the second layer of PIR to that first PIR? And...

Currently midway through doing my ensuite. This photo shows the wall behind where a concealed cistern toilet will be. There will be a shelf at the top of the toilet going back horrizontally to the external brick wall - as such the top half of the brick wall will be plasterboarded and painted...