PeterW Posted April 15, 2017 Share Posted April 15, 2017 Quick question.... With a fully glued T&G board such as an Egger protect board, does the short joint always have to land on a joist ...?? Or if there is perpendicular noggin under the joint does that suffice ..? Link to comment Share on other sites More sharing options...
PeterW Posted April 15, 2017 Author Share Posted April 15, 2017 Ignore that - just found the answer (even though it's not clear on the Egger site ..!!! ) Link to comment Share on other sites More sharing options...
MikeSharp01 Posted April 15, 2017 Share Posted April 15, 2017 And the answer is / was? Link to comment Share on other sites More sharing options...
jamiehamy Posted April 15, 2017 Share Posted April 15, 2017 I'd say no. Link to comment Share on other sites More sharing options...
PeterW Posted April 15, 2017 Author Share Posted April 15, 2017 Sorry - have to be joined on a joist. The picture is odd as it shows a joist running parallel to the short end but then says something else Link to comment Share on other sites More sharing options...
jamiehamy Posted April 15, 2017 Share Posted April 15, 2017 Oh! We didn't put dwangs under the short joins with our 22mm Caberfloor. Too late now I suppose but sure Caber tng didn't need it. 1 Link to comment Share on other sites More sharing options...
Declan52 Posted April 15, 2017 Share Posted April 15, 2017 (edited) If it's gd quality t&g flooring the short end doesn't have to rest on a joist. When it's all glued up you won't be able to tell any difference between on a joist or a join in the middle of 2. It should all be rock solid. Mine where 400mm joist spacing. Edited April 15, 2017 by Declan52 2 Link to comment Share on other sites More sharing options...
Oz07 Posted April 16, 2017 Share Posted April 16, 2017 I always join on joist it's not hard if you've set joists out for a multiple of 2400. Doesn't waste too much and I just trim all outside after finishing deck Link to comment Share on other sites More sharing options...
PeterW Posted April 16, 2017 Author Share Posted April 16, 2017 It's mostly 600 but there are a couple of places towards the walls where it gets less - makes it easier to start a second run if the join is in the gap but not worrying as I've got lots of Egger as I think the joist manufacturer slightly over estimated ...! Link to comment Share on other sites More sharing options...
MikeSharp01 Posted April 16, 2017 Share Posted April 16, 2017 1 hour ago, Oz07 said: I always join on joist it's not hard if you've set joists out for a multiple of 2400 On walls the old 1200 / 1220 conundrum then essentially leads to waste... Link to comment Share on other sites More sharing options...
PeterW Posted April 16, 2017 Author Share Posted April 16, 2017 Yep thats the one @MikeSharp01..! Also set them so we can use one as an edge noggin on at least one room - issue is we have 2 load bearing block walls coming up through the floor so it's been a bit fun..! Didn't realise either that the posi-joists would be 95mm wide ..! Nice thing was that there is a "service run" right down the middle of the house ..! Link to comment Share on other sites More sharing options...
Nickfromwales Posted April 16, 2017 Share Posted April 16, 2017 I only land the joints if it's 18mm flooring, but tbh I don't bother with 18mm flooring any more unless it's over joists at 300mm centres. 22mm deck glued and fixed down properly will be rock solid regardless, as its no difference really between the long joint being unsupported between joists vs the short as they're t&g all round. There is a little argument if the joist are at 600mm centres, but that's rare as most TF houses I've seen have been 400mm anyway. I did one where the joists were at 600mm but the flooring didn't bother me, I was more worried about the huge amount of detectable deflection when bouncing on the floor 21 minutes ago, PeterW said: Nice thing was that there is a "service run" right down the middle of the house ..! Plumbers and sparks delight . Link to comment Share on other sites More sharing options...
PeterW Posted April 16, 2017 Author Share Posted April 16, 2017 Right so that's just made the last 24 boards a lot easier ...!! Thanks all..! Link to comment Share on other sites More sharing options...
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