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How would you repair this prior to painting?

Discussion in 'Decorating and Painting' started by devs, 5 Feb 2019.

  1. devs

    devs

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  3. Tigercubrider

    Tigercubrider

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    Difficult to say as the photo's are hard to read
    Looks like either the brown stuff is unresolved backing from paper or a bad plaster job
     
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  4. misterhelpful

    misterhelpful

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    Has an adhesive border been stripped from the area, because it looks like the walls have been painted two colours with a pencil line used as a guide for something? The peeling paint is typical of this situation. If so, the repair should be relatively easy but you will need to explain the cause so we can help.
     
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  5. devs

    devs

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    Thanks guys, I do not know the history of the wall unfortunately. Here is another picture:

    IMG_6951.JPG

    It does appear that there was an adhesive border at some stage.

    The brown appears to be a satin paint.
     
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  6. misterhelpful

    misterhelpful

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    Ugh, I was hoping it was localised to the border area, which would have been a simpler fix. It appears a mist coat hasn't been properly applied, if at all. That said, you still have a few options.

    Whatever you do, you will need to scrape away as much of the flaky paint as necessary, until you get to a stable surface.

    You can then either:

    • Mist coat the bare plaster areas, allow to dry, and then do your best to fill and sand the hard edges to feather them in and make them less noticeable before you start painting. This is the traditional method, but quite labour intensive. You also still have the possibility of some of those edges coming loose when paint is applied. (Cheapest.)
    • Apply a coat of something like Zinsser Peel Stop or Gardz to help stabilise the surface and bind down those loose paint edges (Do not use PVA). You will then still need to fill and sand but the surface should be more stable to accept paint. (Easiest.)
    • You can do either of those, being a little less fussy with the filling while still getting it smooth and even, but instead of painting the wall you can then apply a good quality medium-heavy lining paper. This will give you an excellent surface without the worry of flaking edges. Obviously, you will still need to paint it. (My preference.)
    • You could bite the bullet and get the wall(s) skimmed by a plasterer. Again, this should give a perfect surface but will cost a lot more and you still need to mist coat and paint. (Most expensive, but total problem solver.)
     
  7. devs

    devs

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    misterhelpful That’s absolutely brilliant many thanks for help and options. I’ll take another look today and figure out what route to take. Many thanks
     
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  8. Tigercubrider

    Tigercubrider

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    I was probably nuts but had a month off work anyway....

    My walls were wallpapered and after removal I found that emulsion had been applied badly and I had to remove it with a window scraper. I was careful and it worked quite well if I didn't rush it.
     
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