Green Building Forum - Secondary glazing/double glazing Mon, 21 Sep 2026 15:27:10 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 Secondary glazing/double glazing https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=60&Focus=605#Comment_605 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=60&Focus=605#Comment_605 Wed, 21 Feb 2007 21:34:28 +0000 ecoworrier In situations were replacing existing window units is not ideal or necessary ie. listed building.
Is it beneficial to have secondary double glazing or would single glazed units be sufficient?
Does the gap between the panes matter (when its more than 16mm), say as much as 100mm?]]> Secondary glazing/double glazing https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=60&Focus=608#Comment_608 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=60&Focus=608#Comment_608 Thu, 22 Feb 2007 08:45:36 +0000 biffvernon
If the important thing is maintaing external appearance, then secondary glazing can be sufficiently discrete not to detract from that appearance. Gaps beyond around 20 mm allow convection which significantly reduce the thermal resistance of the window, though may improve sound insulation.

In a building whose interior is of special historic significance, the internal appearance of secondary glazing may be unacceptable. In such a case the use of other energy saving measures may be given a higher priority.]]> Secondary glazing/double glazing https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=60&Focus=625#Comment_625 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=60&Focus=625#Comment_625 Fri, 23 Feb 2007 12:13:56 +0000 fostertom http://www.greenbuildingforum.co.uk/forum/index2.php?DATEIN=tpc_hnovqhocr_1163970597&LP=true]]> Secondary glazing/double glazing https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=60&Focus=626#Comment_626 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=60&Focus=626#Comment_626 Fri, 23 Feb 2007 12:46:14 +0000 tony Secondary glazing/double glazing https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=60&Focus=627#Comment_627 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=60&Focus=627#Comment_627 Fri, 23 Feb 2007 13:05:09 +0000 fostertom Secondary glazing/double glazing https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=60&Focus=629#Comment_629 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=60&Focus=629#Comment_629 Fri, 23 Feb 2007 16:59:48 +0000 tony
Then there are the dreaded trickle vents --- can of worms ?? a whole bucket full !!]]> Secondary glazing/double glazing https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=60&Focus=630#Comment_630 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=60&Focus=630#Comment_630 Fri, 23 Feb 2007 17:33:56 +0000 biffvernon Secondary glazing/double glazing https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=60&Focus=634#Comment_634 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=60&Focus=634#Comment_634 Fri, 23 Feb 2007 20:02:15 +0000 fostertom Secondary glazing/double glazing https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=60&Focus=1728#Comment_1728 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=60&Focus=1728#Comment_1728 Fri, 30 Mar 2007 15:00:16 +0100 ken davis Secondary glazing/double glazing https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=60&Focus=1735#Comment_1735 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=60&Focus=1735#Comment_1735 Fri, 30 Mar 2007 16:58:42 +0100 fostertom