Green Building Forum - Joist floor and chimney stack Sun, 24 May 2026 17:08:57 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 Joist floor and chimney stack https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=4871&Focus=66725#Comment_66725 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=4871&Focus=66725#Comment_66725 Thu, 19 Nov 2009 11:12:52 +0000 marsaday
i will be spanning the joists into the party wall and off a spine wall. Span is about 4m's. i have a chimney breast in the way and it is 135cm wide. Can i hang 3 joist hangers off here or do i double up the joists at both sides of the chimney breast and run joists between these 2 doubled up joists ? if i do this should the joists between the doubled up joists be also doubled up themselves?]]> Joist floor and chimney stack https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=4871&Focus=66732#Comment_66732 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=4871&Focus=66732#Comment_66732 Thu, 19 Nov 2009 12:41:35 +0000 tony Joist floor and chimney stack https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=4871&Focus=66733#Comment_66733 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=4871&Focus=66733#Comment_66733 Thu, 19 Nov 2009 12:42:14 +0000 tony Joist floor and chimney stack https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=4871&Focus=66767#Comment_66767 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=4871&Focus=66767#Comment_66767 Thu, 19 Nov 2009 17:35:45 +0000 joe90
does this trimming round also apply to new builds where flue liners made of pumice or similar are required by regs?

Ta]]> Joist floor and chimney stack https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=4871&Focus=66776#Comment_66776 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=4871&Focus=66776#Comment_66776 Thu, 19 Nov 2009 19:09:25 +0000 tony
He went red in the face when :shamed: I said that I would be concerned about it catching fire !]]> Joist floor and chimney stack https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=4871&Focus=66795#Comment_66795 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=4871&Focus=66795#Comment_66795 Fri, 20 Nov 2009 07:56:20 +0000 sune It is worth having a look at diagram 21..]]>