Green Building Forum - A Partially deconstructed wall Fri, 17 Apr 2026 12:54:31 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 A Partially deconstructed wall https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16565&Focus=280645#Comment_280645 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16565&Focus=280645#Comment_280645 Thu, 21 May 2020 11:05:09 +0100 tony https://www.dropbox.com/s/q1qeskgyhg5ye70/Partially%20deconstructed%20wall.png?dl=0

Let’s have a careful look at a partially deconstructed wall, the brick outer skin has been removed already and we are looking at the face of the partially remaining blockwork inner skin. There are several serious defects to note:-

Thermal bridging of bricks used as a top course above the blockwork.
Sparse use of dots, with no continuous ribbon of adhesive
Air leakage from the cavity into the void between the blockwork and the plasterboard thermally bypassing any insulating effect the blocks may have had.
Too few wall ties, perpendicular joints not fully filled
There was no parge coat, we would see white edges on the far edges of the blocks were it there
Air leakage path from the plasterboard void into the voids between the first floor joists. From there a draught can enter the house.
Should we really build houses like this, they are barely more than plasterboard tents, draughty ones at that, cold with high energy demand yet in theory compliant with regulations even called sustainable and eco!]]> A Partially deconstructed wall https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16565&Focus=280646#Comment_280646 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16565&Focus=280646#Comment_280646 Thu, 21 May 2020 12:18:24 +0100 owlman Euphemistic type phrases like "Dot and Dab" or "Blob and Dob", also engender bad practice because the more stupid ones will take it literally.]]> A Partially deconstructed wall https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16565&Focus=280656#Comment_280656 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16565&Focus=280656#Comment_280656 Thu, 21 May 2020 17:46:36 +0100 philedge
Saw an article last autumn on beeb news about the construction industry and some of the footage had a youngish brickie stuffing insulation batts down between the 2 leaves of a cavity build.

I suspect Tonys wall is pretty common place]]> A Partially deconstructed wall https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16565&Focus=280670#Comment_280670 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16565&Focus=280670#Comment_280670 Fri, 22 May 2020 09:54:16 +0100 revor