Tue, 19 Dec 2023 07:07:42 +0000 http://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17910&Focus=302653#Comment_302653 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17910&Focus=302653#Comment_302653 Sun, 30 Jul 2023 09:28:37 +0100 jamesingram First impressions it seems a potentially good way to solve airtightness in refurb projects, especially EWI work
Here's an example
https://www.intelligentmembranes.com/c/building-solutions/air-tightness-membrane/passive-purple-brush]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17910&Focus=302654#Comment_302654 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17910&Focus=302654#Comment_302654 Sun, 30 Jul 2023 11:11:40 +0100 djh https://passivehouseplus.co.uk/news/design-approaches/imperial-war-museums-archive-breaks-airtightness-record

I think they are mostly vapour control layers as well as airtightness. I don't know of any breathable ones.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17910&Focus=302655#Comment_302655 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17910&Focus=302655#Comment_302655 Sun, 30 Jul 2023 11:37:39 +0100 Simon Still

https://www.isocell.com/en/product/omega-liquid-dicht]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17910&Focus=302656#Comment_302656 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17910&Focus=302656#Comment_302656 Sun, 30 Jul 2023 12:16:58 +0100 tony
What happens when the background cracks?]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17910&Focus=302666#Comment_302666 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17910&Focus=302666#Comment_302666 Mon, 31 Jul 2023 09:31:24 +0100 TimSmall
See also: https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14816]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17910&Focus=302686#Comment_302686 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17910&Focus=302686#Comment_302686 Tue, 01 Aug 2023 14:17:12 +0100 jamesingram Yes Tony, I agree , when the building moves all those cracks just open up.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17910&Focus=302696#Comment_302696 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17910&Focus=302696#Comment_302696 Wed, 02 Aug 2023 08:05:45 +0100 TimSmall http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17910&Focus=302710#Comment_302710 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17910&Focus=302710#Comment_302710 Wed, 02 Aug 2023 18:57:59 +0100 wookey There are lots of situations where it's dramatically easier than tape.
Proclima Aerosana says it has "humidity-variable diffusion resistance" so is at least somewhat breathable.

Datasheet says:
Vapour permeability:
sd value: 6 m (at 0.3 mm ; 13 mil thickness) (EN 1931)
sd value, humidity variable: 0.13 - 10.00 m (EN ISO 12572)
Vapour resistance:
g value 30 MN·s/g (at 0.3 mm ; 13 mil thickness)
g value, humidity variable 0.65 - 50 MN·s/g

I've not looked up all the others to see how they compare.]]>