Wed, 03 Jun 2026 05:02:25 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285742#Comment_285742 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285742#Comment_285742 Fri, 25 Dec 2020 19:58:40 +0000 djh Posted By: tonyI don’t think that is stops water vapour.
Why does the description start "A specially formulated sealer providing vapour control"?]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285743#Comment_285743 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285743#Comment_285743 Fri, 25 Dec 2020 22:36:32 +0000 tony https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285744#Comment_285744 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285744#Comment_285744 Sat, 26 Dec 2020 10:57:59 +0000 revor https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285770#Comment_285770 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285770#Comment_285770 Sun, 27 Dec 2020 08:47:55 +0000 Ian1961 An alternative to that primer would be to paint all the ceilings with a paint that will act as a vapour barrier eg https://www.amazon.co.uk/Dulux-Easycare-Bathroom-Emulsion-Ceilings/dp/B0038ETHZ4]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285787#Comment_285787 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285787#Comment_285787 Sun, 27 Dec 2020 15:51:42 +0000 bxman
+1

yes please failing that could I borrow it when you have sorted out your problem thanks]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285904#Comment_285904 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285904#Comment_285904 Thu, 31 Dec 2020 15:44:00 +0000 deniance https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285906#Comment_285906 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285906#Comment_285906 Thu, 31 Dec 2020 15:48:02 +0000 deniance Gotta be some way of finding it!! I’ll set the fan up again later and check for any air leaks]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285907#Comment_285907 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285907#Comment_285907 Thu, 31 Dec 2020 15:48:38 +0000 deniance https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285908#Comment_285908 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285908#Comment_285908 Thu, 31 Dec 2020 15:52:42 +0000 deniance
Gotta be some sort of test to see where it’s coming from!

I put loft boards down and left a big gap between boards and insulation, these boards cover most of the main bit of the attic and they are freezing cold, so I thought they would be wet underneath as the warm air would touch these first, but they are dry as a chip!!]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285909#Comment_285909 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285909#Comment_285909 Thu, 31 Dec 2020 15:53:41 +0000 deniance Posted By: bxmanI am impressed with the thermal camera which model is it?

+1

yes please failing that could I borrow it when you have sorted out your problem thanks

It’s the e4 model off a German guy on eBay it’s upgraded on the sly to have the resolution of the top of the range model]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285914#Comment_285914 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285914#Comment_285914 Thu, 31 Dec 2020 17:01:55 +0000 deniance My tado valves have humidity sensors in them, I wonder if I take the 3 valves upstairs and place them in the attic, one at each end and one in the middle, watch the info overnight and maybe one of them will light up first given me a basic idea of which bit gets humid first?]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285916#Comment_285916 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285916#Comment_285916 Thu, 31 Dec 2020 17:52:00 +0000 philedge https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285919#Comment_285919 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285919#Comment_285919 Thu, 31 Dec 2020 19:15:18 +0000 deniance Posted By: philedgeWhen a cold night is forecast you could lay a sheet of thin clear plastic over the top of the insulation so it sits snug over the insulation. If theres moisture coming through from below it'll condense on the plastic and be visible from above. May help confirm its coming from below??
Good idea]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285976#Comment_285976 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=285976#Comment_285976 Sat, 02 Jan 2021 21:43:30 +0000 Victorianeco
Take some drill samples to see if the chimney is wet... or just use your hand.

Can't see enough moisture escaping from the house into the attic, appears to be a clear roof failing (likely chimney)]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=298015#Comment_298015 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=298015#Comment_298015 Tue, 04 Oct 2022 10:33:55 +0100 martinwinlow https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=298017#Comment_298017 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=298017#Comment_298017 Tue, 04 Oct 2022 11:02:20 +0100 WillInAberdeen
Immersions are supposed to have dual safety cutouts to prevent this, but I don't think anyone tests them during heating system servicing, and mine was not working when I tested it.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=298022#Comment_298022 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=298022#Comment_298022 Tue, 04 Oct 2022 14:22:04 +0100 Gareth J
A clear, cool night follows and windspeed drops. The tiles/slates rapidly cool and the still warm, moist air inside condenses some if it's moisture out on them.

We live in North Cornwall, a tin shed will sweat with no internal sources of moisture. Worst is when the wind changes direction from West to east. Every object with thermal mass sweats.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=298045#Comment_298045 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16853&Focus=298045#Comment_298045 Wed, 05 Oct 2022 16:52:52 +0100 tony