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Patching a hole in the ceiling floor
(thelemmy.club)
Working on the never-ending basement brewery and we have this: old piping installation holes, leading into the kitchen above.
That grey subfloor is asbestos hardiboard. We are going to eventually redo the kitchen - just not this year (priorities, man!) what would be the best way to cover this from the basement side? gut says just gluepaint to encapsulate and a piece of ply to hide the holes, sound idea?
Edit: ok cos there seems to be repeated confusion: These are holes in the CEILING of a basement brewery leading to the asbestos floored kitchen ABOVE.
Ah, now it's all coming together...
In that case spraying a bit of paint will help stick the fibres down in those spots, but if the chance of shedding there is a concern then you're probably better off covering the whole area to avoid anything working through the joints/cracks in the boards. I'd consider it a low risk even uncovered but I can understand wanting a bit more peace of mind for this.
Something I'm now thinking could be an option for you would be to cover the ceiling with those foam/foil insulating panels (like this). They're light enough to stick to the ceiling with minimal fixings, would act as a decent barrier (particularly with the joints sealed with tape) and you get a bit of extra insulation as a side benefit.
Yah, we're considering some panels - they're light and cheap enough at Bunnings, hubs is kinda in love with the dark wood look though. Trying to convince him he needs panels at least over the workspace...