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Thanks I will try that and see what the outcome is...one by one.

Thats it just been in house a month and not sure, rads are oil boiler...no electric heaters, there is even one in toilet wall...dont know to leave them on or not. I thought they would be isolation points for overloads and they blow instead of main fuse?

Hi all I have these in my house just bought, are they isolation switches? do leave them all on in every room?

Hi I think I see the issue now you have pointed it out that the membrane has no air under on the edges, so clear out under there and add some vents, same for both sides that about right?

Hi yes ridge tiles mortared on I know there is air flow over the ridge above the membrane. I think I am mixed up with eves and soffits lol, so you mean put vents in the eves as in up the sides/slope of the roof both sides and below the membrane to allow air flow, but thats ok as inside will be...

Morning, agh good advice thanks, so you wouldnt recommend aliminium roll on top as oppose to thicker kingspan...?one daft question I thought the eves insulation was the air flow above the membrane and not under it too as that would be inside the build that correct, so just above?

Thanks Mr Chibs, so the joints, gaps in the insulation between rafters foam and tape for tight seal. Overboard on top, can I use foil backing there and tape as could still screw boarding then to the rafters. Joists are 100mm, yes pitched roof both sides, eves first make sure flow goes over...

Yeah I think it is this as I dont think I have leaks above the membrane, 50mm insulation leaving 50mm, so if thats case do I need better vents above the membrane or fit a Water Vapour barrier over top of insulation then plaster or ply?

Hi Thanks for reply, this is a small office extension on floor level with tile roof then the Easytrim Master 112. If I fit roof vents removing a tile on both slopes and add one of these will that sort? https://www.amazon.co.uk/dp/B01FUYLHOI/ref=twister_B01FUYLHHU?_encoding=UTF8&th=1 or are you...

Hi any help apreciated, I have drops of water underside of my breather as seen on photo, the inuslation leaves a gap as seen but still water in this cold weather which then soaks insulation, how do I stop this? Thanks