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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

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

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

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

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

Yeah This going to be an expensive mistake, but would rather just fork out now and not have to worry every winter!! Woody, I have 10mm over fascia vent and a 25mm gap between insulation and roof membrane, there is a draught, but clearly due to my poor understanding there is too much vapour...

Wish I knew what I do now… mine was no where near as good as yours unfortunately. I just don’t want to spend all this money and miss anything and have the same problem!

I was just going to overboard it with an insulated backed plasterboard over the top of the existing skimmed ceiling. I wonder if I need to polythene the ceiling (VCL) before putting the insulated plasterboard up.

Thanks for the reply. If I’m being honest, we do use the extractor but it is not vented outside only a carbon. Filter ( job I never got round too!) the kitchen is floor area 32m2 with 3nr 660 x 1180 roof lights which two are on constant vent. The room is heated via two double radiators The...

Hi, made the mistake of not under boarding my rafters with foil insulation or adding a polythene VCL. I have 150mm foiled back insulation in between rafters only and 15mm wallboard screwed to the rafters, now the weather has turned I’m getting isolated condensation spotting (which is really...

Hi all, got a problem and missed a Vcl in my lean too roof, was hoping there was a proven VCL type paint than overboarding it. thanks

Thanks woody, ceiling they spot lights seems to have made the room slightly warmer, so I’m hoping now I’ve taped that the hot air won’t be going up or as much! I’m going look at some of these vents and paintable vcl too, I found something from bostik.

Fair comment. I have taped my spots up this morning to see if this helps too. I will get someone to core the 100mm hole I think when it’s a bit warmer. that will help with the issue you think?

When it opens it lets cold air in. I might have to get someone in to drill the 100mm hole then. I have found a a paintable vapour barrier by Bostik... they must be something on the market for plonkers like me who totally cock this up.

Isn’t have the window next it it good enough?

I have Led spot lights. Window does not have a trickle vents We use extractor with carbon filter fitted. And open windows when cooking. we have separate utility for washing machine and tumbler drier with door on. Not liked to the kitchen. no abutment vent just lead flashed against the wall...

hi woody, yeah I’ve cocked up as I only have a 20mm void between the insulation and breathable felt with 10mm over fascia vents (pitch 14.6 degree) and no VCL with standard 15mm wallboard to the underside of rafter. I woke and found moisture on the ceiling yesterday morning. And the is defo...

Morning all, I noticed last night when looking up at my ceiling in my lean to extension as I have some condensation water spots showing on my ceiling. the spot lights I installed are bringing in quite a lot of cold air into the kitchen 8nr over a 8.7mtr length. Would this be contributing to my...

Cat lad appreciate the down pipe enters onto the roof and not ideal... but no where else to put it. sky lights are in the right location just above half way lead goes into mortar joint under window, had to do this to raise height of roof to get me as near as we could to 15 degree. fascia...

You can’t buy it mate, you have to knock it up yourself