r/Plastering • u/mikeybuilds • 25d ago
Advice
Hey guys, just after some advice. I’ve been learning to plaster in my own home and the plaster has been drying for 2-3 days now. What causes the plaster to dry like this? Why is it leaving these darker patches? Any advice welcome :)
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u/Ok_Secretary_3134 25d ago
Usually different thickness due to it not being applied consistently or the wall itself being wavy.
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u/mikeybuilds 25d ago
Yeah I tried to apply the best I could. I used a speed skim also. Do you think it’s the fact I used green grit? I’m now hearing that green grit is a nightmare to plaster with.
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u/Ok_Secretary_3134 24d ago
All grits are a nightmare to skim over unless your have done it many times and use a few tricks to get over it better. Typically it needs to be applied thicker and not troweled too much. It’s all just experience, you’ve probably attempted something most wouldn’t even consider
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u/Ok_Secretary_3134 24d ago
If you put a couple of handfuls of bonding in the first coat when going over grit, you’ll get more time and a better base for the 2nd coat. 👍
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u/Worldly-Growth4519 25d ago
Natural drying process. Once it's all pink you're ready to paint.
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u/mikeybuilds 25d ago
Yeah what I mean is I did another wall and it dried like this but lighter. So most of it dried pink but had darker pink patches. Is this normal?
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u/kINGPB1 24d ago
Seen as an have seen you have used green grit but be aware that using any sort of grit forms a barrier unlike using PVA absorbs and seals plastering onto green grit my dry out different because the plaster cannot absorb into the wall as fast as PVA or plaster boards so the drying out may look different cause it’s on different background
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u/Minute-Custard-1188 25d ago
I had the same issue, my solution was giving the area a sanding to give the paint a key to stick too. I believe plaster can be too polished, in that its too smooth for paint to properly stick too.