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Hello, I usually try to answer questions where I can and generally be as helpful as possible on here, however it is now me needing the help.. So I thought you peoples may have some good ideas to solving my quandary.
Long story short, new to me house, all GF flooring is mush, 3x air bricks in the bay only, they don't vent to anywhere else though.
Floor build up was 2 course dwarf walls, 1,1/4" wall plate, 2,3/4" x 2" joists on 400ish centres.
I've opted to omit the wall plates and up the joist section to 3" x 4". on dpc on a fresh bed of mortar. This turned out to mean quite a lot of packing is required to level the bearing points for the joists, but I have lots of slate for that and/or other methods, not insurmountable.
I intend to noggin down the centre and both sides of the room.
The real issue is as you may see from the images, there are no joist pockets at all, and the bricks are too much like actual earth to IMHO reliably take fixings for a bolted wall plate or hangers. Therefore I assumed I would have a fully floating wall and it would stay in place under it's own weight.
But then I realised, that through general people traffic & heat / cool cycles it might 'walk' to one end of the room, and rest hard up against a wall - Note there will be dpc over each joist end.
SO,,, I can't imagine a reliable way to easily fix the joists to the dwarf walls, so my current thoughts are something compressible to insert between the joist ends/sides and the perimeter walls to keep the joist 'structure' centralised in the space, which will not push the walls over with heat expansion of the joists.. Does that sound reasonable? I want to keep away from plastics/adhesives as much as possible on this traditional themed build, but it might be the only way forward atm..
Thoughts and input welcome.
Long story short, new to me house, all GF flooring is mush, 3x air bricks in the bay only, they don't vent to anywhere else though.
Floor build up was 2 course dwarf walls, 1,1/4" wall plate, 2,3/4" x 2" joists on 400ish centres.
I've opted to omit the wall plates and up the joist section to 3" x 4". on dpc on a fresh bed of mortar. This turned out to mean quite a lot of packing is required to level the bearing points for the joists, but I have lots of slate for that and/or other methods, not insurmountable.
I intend to noggin down the centre and both sides of the room.
The real issue is as you may see from the images, there are no joist pockets at all, and the bricks are too much like actual earth to IMHO reliably take fixings for a bolted wall plate or hangers. Therefore I assumed I would have a fully floating wall and it would stay in place under it's own weight.
But then I realised, that through general people traffic & heat / cool cycles it might 'walk' to one end of the room, and rest hard up against a wall - Note there will be dpc over each joist end.
SO,,, I can't imagine a reliable way to easily fix the joists to the dwarf walls, so my current thoughts are something compressible to insert between the joist ends/sides and the perimeter walls to keep the joist 'structure' centralised in the space, which will not push the walls over with heat expansion of the joists.. Does that sound reasonable? I want to keep away from plastics/adhesives as much as possible on this traditional themed build, but it might be the only way forward atm..
Thoughts and input welcome.
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