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So I’m building up some areas under a badly formed stair winder with bonding (actually thistle undercoat) , after scratching and then putting dilute PVA on the existing surface. This to have gone OK in most places but the last lot I did, although I swear I mixed it the same consistency, hasn’t set properly where it is layed on thinly or feathered out in a few places. Its much lighter than the rest and just crumbles easily, it looks like the original stuff before I added water. I wouldnt worry about this if the last mixes had done this but they seemed to go dark everywhere, which makes me worried about the rest of the last mix I put up there?
The photo shows an obvious bit where its very thinly applied in the middle, like 2 or 3mm maybe. Its just powder basically. Also even the bits that have gone dark and set don’t look as dark as the other mixes I’ve done, and it doesn’t feel quite as hard (after 24hours anyway)
The photo shows an obvious bit where its very thinly applied in the middle, like 2 or 3mm maybe. Its just powder basically. Also even the bits that have gone dark and set don’t look as dark as the other mixes I’ve done, and it doesn’t feel quite as hard (after 24hours anyway)
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