Olf Posted May 1, 2021 Share Posted May 1, 2021 Beam and block floor, beams perpendicular to the door opening. Should/could the beams protrude towards the outer leaf to support the part of the floor within the door opening? With beams running along the opening I take that cavity closer *has to* provide support, but what in this case? Link to comment Share on other sites More sharing options...
Temp Posted May 1, 2021 Share Posted May 1, 2021 I don't think any of the beams should go as far as the outer leaf. That would represent a thermal and possible damp bridge. Link to comment Share on other sites More sharing options...
Olf Posted May 2, 2021 Author Share Posted May 2, 2021 I agree, there should be some gap for perimeter insulation. I checked the cavity closers and they actually do not provide structural support, this is down to the slab to be strong enough to overgang. Which may be ok for 100mm cavity, but how is that dealt with in case of wide (say 300mm, 400mm?) cavities? Link to comment Share on other sites More sharing options...
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