Hairline crack
I have a couple of fine cracks in the skim of my kitchen from when it was extended. (skim on Plasterboard) Just wondering what to do before redecorating (emulsion). Do I need to rake them out a bit to use a filler - or is there something really thin - like PVA that will prevent the crack from showing again?
Rake it out and use decorator's caulk, which is flexible. You may need to fill it a few times as it shrinks as it dries. But should last well when done. Everything else I've tried seems to just crack again.
As Dave says, rake out and fill. I've not had problems using ordinary powder filler. Wet the raked out crack before applying a fairly stiff mix of filler. Wait a bit until the filler is getting quite firm, dampen and polish like one would plaster. Leave to set/dry then wipe down with a damp cloth, saves all that messy sanding down.
Thats indicates things are moving very slighly relative to each other. I'd use decorators caulk between wall and arcitraves/skirting as the timber will move either from vibration from the door and/or variations in humidty.
Assuming it is a crack on the skim between two sheets, it's safe to assume it's moving. And will move again.
Ordinary filler is fine where there is zero movement.
"Dave Plowman (News)" snipped-for-privacy@davenoise.co.uk> wrote in news: snipped-for-privacy@davenoise.co.uk:
I don't think it is moving - initial shrinkage I think.
Then use any old filler. Only time will tell.
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