Hotpots on warm roof - normal?

[drpepe]

Hi,

This is a GRP warm roof built in 2022. In cold weather there are consistently hot spots of melted ice in the locations pictured. Is this expected or does it indicate poor construction? How would you investigate?

I had my doubts about the builder expertise with this type of roof tbh, and there is an ongoing issue of thermal movement noises which I guess suggests inadequate fixings were used.

 

[RandomGrinch]

Do you have downlighters fitted in the ceiling?

 

[^woody^]

Yes it's air leakage - a gap in the insulation layer and maybe the vapour layer too.

 

[drpepe]

Do you have downlighters fitted in the ceiling?

Yes we do. I understand that would be an issue with cold roof, but a well constructed warm roof wouldn't matter would it?

I will note that as another cockup from the builders, then...

Presumably no fix apart from taking plaster down inside or taking off the roof to refit?

 

[^woody^]

A thermal camera would help narrow down the locations, but yes the remedy is opening up the roof. The question is whether rectification work is actually necessary.

 

[drpepe]

So your assessment might be that it's not ideal but short term no significant damage being caused?

 

[mrrusty]

Personally, we prefer hotpots at the dining table...I'll get my coat