We have had to scrape the paint and a heap of plaster off the garage ceiling. It was in bad shape- just been Hodges up over the years befire we bought it. To get it smooth again I will have to plaster. Does anyone know if plaster will adhere to the cardboardy stuff on the outside of the gyprock or should I coat it with PSU first? Any advice would be greatly appreciated.☺️
Plasterboard is relatively cheap. Eg https://www.bunnings.com.au/gyprock-csr-3000-x-1350mm-10mm-4-05sqm-wall-plasterboard-re_p0730134
Have you thought about just replacing the damaged boards? Might be a lot quicker and easier than trying to repair them.
Also, a photo might help you get better quality responses so everyone can see what you are up against.
Hi @rachelfoley & welcome.
Okay, a wee bit confused...
So when you say that you removed the plaster... there was plaster over the gyprock/plasterboard? That's sort of unusual as normally gyprock is just skim coated on the joints etc, sealed & then painted.
You need to replaster & again I'm not quite sure what the situation is but normally you wouldn't plaster over gyprock, just skim coat etc to get it consistent.
Maybe a photo or two so we can get a better idea of what you are facing?
The right plaster will adhere to the paper on gyprock but can be a bit tricky working on the ceiling.
p.s. - just seen @MartyH post & his point is a good one - sometimes replacement makes a lot more sense time & money wise than repair...
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