Tue, 19 Dec 2023 08:36:17 +0000 http://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17782&Focus=300780#Comment_300780 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17782&Focus=300780#Comment_300780 Fri, 17 Mar 2023 18:44:48 +0000 Devlin
I want to apply a form of external insulation to my 1900 Victorian house. I’ve come across two insulating, breathable renders in my research:

https://www.coreconservation.co.uk/termorasante-aerogel-thermal-lime-plaster/

https://proofshield.co.uk/product/prooftherm-insulating-render-plaster/

I guess my question here is - are these really worth it? Is it better to just pay more for insulation boards and do it that way?

Thanks]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17782&Focus=300782#Comment_300782 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17782&Focus=300782#Comment_300782 Fri, 17 Mar 2023 22:01:04 +0000 tony http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17782&Focus=300784#Comment_300784 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17782&Focus=300784#Comment_300784 Fri, 17 Mar 2023 23:17:21 +0000 RobL http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17782&Focus=300786#Comment_300786 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17782&Focus=300786#Comment_300786 Sat, 18 Mar 2023 07:46:23 +0000 Devlin
That was my concern @RobL, that I would need quite a lot of the stuff to be comparable to EPS or the like in terms of its insulating properties. The aerogel based plaster does sound interesting though. Probably quite expensive. They claim to have a lambda value of ƛ0.016. Seems pretty good.

One of my concerns with putting EPS or any other “hard” material that needs to be fixed to my walls is 1) the cost, labour mostly, which I expect to be hideous; and 2) I have many a pipe coming out if the house that’d need to be extended as well as a very awkward cast iron soil pipe which would make insulating behind difficult. So was hoping there was an alternative.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17782&Focus=300787#Comment_300787 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17782&Focus=300787#Comment_300787 Sat, 18 Mar 2023 09:00:54 +0000 fostertom http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17782&Focus=300792#Comment_300792 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17782&Focus=300792#Comment_300792 Sat, 18 Mar 2023 11:39:13 +0000 djh Posted By: DevlinI guess my question here is - are these really worth it? Is it better to just pay more for insulation boards and do it that way?I think either of those plasters will be vastly more expensive than doing it the normal way. It sounds as you say that you are at the start of your journey, and still have some way to go in terms of investigating, learning and thinking about the various issues that might arise, so it will be some time before you're ready to choose a particular plan and start spending any money on it.

FWIW, I've written to the firm about the aerogel plaster; I'll post back here with whatever I learn about price etc.]]>