Vaulted ceiling problem!

[robinbanks]

Robinsbank…. I can’t see this being the main problem… appreciate will defo be contributing too my problem

Just to clarify, you're saying you're getting condensation on the inside of your ceiling, now that you're using your kitchen to boil pans of water etc and the weather has turned freezing cold outside..

..and you think that the condensation you're seeing is external moisture coming in through your roof construction?

 

[martin88]

Noseall… it is passed off, it was a comment on his approval and I sorted it through other means! But yes I agree silly error

 

[martin88]

Robin, yes the surface of the ceiling is not condensating, it’s coming from
Inside the roof and running down as the back of the roof membrane is wet with condensation

 

[robinbanks]

Can you show a picture of what you're referring to?

 

[noseall]

Robin, yes the surface of the ceiling is not condensating, it’s coming from
Inside the roof and running down as the back of the roof membrane is wet with condensation

Its still an internal water vapour (condensation) issue. The vapour is hunting upwards for the first cold surface it finds.

 

[martin88]

Yeah totally, I’m hoping if I insulate board this will prevent my issue? Do you think and maybe put a Vcl before to be certain

 

[noseall]

Yeah totally, I’m hoping if I insulate board this will prevent my issue? Do you think and maybe put a Vcl before to be certain

You definitely need a robust VCL. It's the reason the vapour is migrating past the ceiling. Hence the reason we tape both layers to death AND use foil back (duplex) plasterboards.

 

[martin88]

I’m going to go for polythene Vcl the 25mm insulation and plasterboard staggered so I’m belt and braces

just need someone to do it as I cannot be bothered