Grey undercoat on 1950s stairs... heat-resistant! Any idea?

Discussion in 'Painters' Talk' started by Jeff4, Mar 17, 2020.

  1. Jeff4

    Jeff4 New Member

    Hi All,

    I've been thinking about stripping our stairs back to bare wood. Stripped the gloss off one area of the stringer easily, but then hit what looks like a grey undercoat, which just sticks two fingers up at the heat gun. I can get it off - mostly but not completely clean - by wet sanding it (with a P3 mask on, as I don't know what it is!) but I'd like a quicker strip and cleaner result if I'm going to do the whole staircase.

    Anyone have a idea what this undercoat is likely to be and how best to remove it?

    Thanks!
     
  2. Astramax

    Astramax Super Member

    Could be a shellac base paint which acts in a different way to heat as it gets sticky, a chemical stripper may be a better choice. :confused:
     
    Last edited: Mar 17, 2020
    Jeff4 likes this.

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