Help Sealing Part of Painted Walls

LCdawg on 08/03/2020 - 14:45
Last edited 11/03/2020 - 12:08

Hi all looking for advice. Seems I was given the wrong kind of sealer to Seal my walls before I painted last year. I am having issues with weak paint adhesion in areas. Anyways I have stripped the paint off of a wall however certain sections are adhering really well and it is proving problematic to try and scrape those sections of paint off without skimming plaster as well. My question is how would I go about sealing the parts of wall that peeled off easily
and leaving the painted parts that have adhered, however it obviously creates a higher part in the wall and makes a Groove down to plaster. I was given advice to skip those parts of paint that are adhering well and seal the wall, evening out the rest of the wall with a light coat of gyprock ultra top. Would this be the way to go? I have white set plaster.

Edit- Thankyou for all the answers, I have another question.Hi all,

I stumbled upon someone with a similar issue but it seems that it was caused by sealing the plaster to early and water in the plaster repelled the oil based sealer causing it to dry on top. Now I waited about 3 months until I painted, but hypothetically if this wasn't enough and has caused my issue, will it have dried out by now under the paint after over a year as I have started stripping paint from the walls and I am wondering if I can go straight to sealing them or Wether to strip them and wait a couple months before sealing.

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Comments

  • dasher86 on 08/03/2020 - 14:53

    Sand paper and patience?

  • c64 on 08/03/2020 - 15:00

    i suggest seal it and skim it

    • Cdawg on 08/03/2020 - 15:17

      Okay sweet so you reccommend the advice I was given with using the gyprock ultra top coat after sealing to even out the depression caused by the paint I couldn't remove?

      • ego22 on 09/03/2020 - 18:13

        no u have to fill that depression with plaster

  • GangGang on 08/03/2020 - 15:09

    Do you mean primer?

    What was the paint you were recommended?

    • Cdawg on 08/03/2020 - 15:22

      Nah sealer. So apparently I was given a normal sealer undercoat instead of a sealer binder and thus the sealer did not sink into plaster, so I am able to peel paint off. But there are parts on the wall that it has adhered well and is very hard to scraper off but the thickness of leaving that paint on creates a depression between the layer of paint and the plaster. So I was advised to Seal over The plaster I have managed to expose and leave the paint and then skim coat with gyprock to even it out.

  • Ocker on 08/03/2020 - 15:16

    Try mixing into the paint some Bondcrete for added adhesion

  • bloom on 08/03/2020 - 16:23

    What paint you using? Gyprock doesn’t even need a primer/sealer, just makes life easier on the next 2-3 coats

    • c64 on 08/03/2020 - 19:43

      he says he's got a plaster wall

  • theHMASfriendship on 08/03/2020 - 18:23
    -1

    It's spelled "ceiling"

  • lgacb08 on 10/03/2020 - 17:13

    just to clarify, is the wall bare plaster or plasterwall with paper on it? If it is the former, you don't even need binder, just dilute paint with water at 1:1 ratio to seal off the porous surface and paint over it when it dry, you might need to do more than 1 layer. If it was paper then pretty much get a thin coat of gyprock and sand it down before painting them over (and still need diluted paint or binder to bind the porous surface first).

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