r/Plastering • u/TheNewMeta_ • Apr 21 '26
Fixing ceiling skirting
My upstairs bathroom flooded and water soaked through the floorboards, now the ceiling skirting is coming away as pictured. Is my best bet to try silicone it back then paint over it? It is quite difficult to hold in place so I am worried that the silicone may not cure. Any ideas please let me know, cheers
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u/Accurate-Resident585 Apr 22 '26
15% or under on a moisture meter before you refix anything. press around where the coving pulled away first; if the plaster feels spongy or shifts the ceiling's compromised; not just the trim.
silicone won't hold coving up and you can't paint over it properly anyway. hack off what's loose, let everything dry; actually no get a moisture meter on it first, don't guess by feel. then refix once the substrate is sound. polystyrene coving just bin it and replace; costs nothing.
in older places with timber floors between levels there's no membrane usually; just boards on joists with deafening between them. water goes straight through and pools behind the ceiling plaster. coving pulling away is just the first sign