Hi,
This is a ground floor bathroom with a concrete/screed floor. I need to raise the shower tray by 50mm to get the minimum fall. Tray manufacturer say min 8mm of sand/cement under tray so that is 42mm. If I use a 18mm OSB3 base that is 24mm to floor. Could I scree 24mm and then set the OSB on that? With long torxs to the concrete sub base. Or would I be best to dig out the existing scree so I can set timbers to get level "joists" to screw the OSB3.
Suggestions?
Or I suppose I could scree 42mm and do away with the osb but the edge I think would be suspect, likely to crumble. With OSB3 then the edge under the tray would be stronger. Or I suppose a concrete slab 42mm thick is another option.
This is a ground floor bathroom with a concrete/screed floor. I need to raise the shower tray by 50mm to get the minimum fall. Tray manufacturer say min 8mm of sand/cement under tray so that is 42mm. If I use a 18mm OSB3 base that is 24mm to floor. Could I scree 24mm and then set the OSB on that? With long torxs to the concrete sub base. Or would I be best to dig out the existing scree so I can set timbers to get level "joists" to screw the OSB3.
Suggestions?
Or I suppose I could scree 42mm and do away with the osb but the edge I think would be suspect, likely to crumble. With OSB3 then the edge under the tray would be stronger. Or I suppose a concrete slab 42mm thick is another option.
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