Green Building Forum - Shrinkage of board insulation Tue, 19 Dec 2023 08:30:33 +0000 http://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 Shrinkage of board insulation http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17877&Focus=302129#Comment_302129 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17877&Focus=302129#Comment_302129 Fri, 23 Jun 2023 21:28:45 +0100 cjard
The attached pic shows the gap that opened up between board ends; it used to be 5mm and was foamed up (no idea where most the foam went).

The boards have not only shrunk but curled too. For scale the battens are 25mm ish so in some places it looks like a shrink of 2 inches, though interestingly seemingly only on one dimension)

These boards were tissue faced seconds and may have been stored outside - hopefully dry first grade foil faced boards wouldn't suffer to the same degree..]]> Shrinkage of board insulation http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17877&Focus=302132#Comment_302132 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17877&Focus=302132#Comment_302132 Sat, 24 Jun 2023 06:59:37 +0100 fostertom Shrinkage of board insulation http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17877&Focus=302133#Comment_302133 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17877&Focus=302133#Comment_302133 Sat, 24 Jun 2023 08:04:35 +0100 revor Shrinkage of board insulation http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17877&Focus=302140#Comment_302140 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17877&Focus=302140#Comment_302140 Sun, 25 Jun 2023 06:51:31 +0100 Jonti Shrinkage of board insulation http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17877&Focus=302145#Comment_302145 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=17877&Focus=302145#Comment_302145 Sun, 25 Jun 2023 16:33:38 +0100 revor A thermal camera might tell us that.

Posted By: revorI have mentioned previously a builder reported to me how he came across a job he had done 10 year previously that had shrank considerably.

I bumped into the builder yesterday morning and mentioned to him about this thread and me went on to say that it was Kingspan he had insatalled.]]>