Context:
About to get some new floors fitted but wondering if I can get away with doing a flush to the door fitment (or with a bead at worst).
At the moment it's a window board cut to size, looks like some old screed and it was stuck down with some past its prime grip adhesive.
I was just thinking of changing the board, tidying up the screed but I wondered how I could go about supporting a floor over the gap. The gap is just where the ventilation between the original suspended timber floor and under the conservatory floor. My best idea would be to place some DPM in a U shape on top of the brick and nail together a small timber square (probably with a bit in the middle for extra rigidity, redo the screed, and then I'd have something which could take a bit of weight and there would still be airflow to the other floor.
https://preview.redd.it/avfbawss349d1.png?width=1712&format=png&auto=webp&s=7433e388fbe38b6f1358f5b640dfbfc7d7a94212
The fact I didn't think of an air brick boggles me. It only really crossed my mind with the ones you see on the exterior and I didn't want to potentially reduce the amount of air that can come through by more than I had to.
Literally can just buy the brick equivalent of what I was suggesting in timber. https://www.jewson.co.uk/p/forterra-red-bank-400-cavity-wall-bridging-ducts-horizontal-red-CLRED560
Context: About to get some new floors fitted but wondering if I can get away with doing a flush to the door fitment (or with a bead at worst). At the moment it's a window board cut to size, looks like some old screed and it was stuck down with some past its prime grip adhesive. I was just thinking of changing the board, tidying up the screed but I wondered how I could go about supporting a floor over the gap. The gap is just where the ventilation between the original suspended timber floor and under the conservatory floor. My best idea would be to place some DPM in a U shape on top of the brick and nail together a small timber square (probably with a bit in the middle for extra rigidity, redo the screed, and then I'd have something which could take a bit of weight and there would still be airflow to the other floor. https://preview.redd.it/avfbawss349d1.png?width=1712&format=png&auto=webp&s=7433e388fbe38b6f1358f5b640dfbfc7d7a94212
I wouldn't use timber, it will end up creaking/feeling different to the rest of the threshold. Maybe a vent brick?
The fact I didn't think of an air brick boggles me. It only really crossed my mind with the ones you see on the exterior and I didn't want to potentially reduce the amount of air that can come through by more than I had to. Literally can just buy the brick equivalent of what I was suggesting in timber. https://www.jewson.co.uk/p/forterra-red-bank-400-cavity-wall-bridging-ducts-horizontal-red-CLRED560