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Rustins Knotting Flashing through solvent based paint?!?! HELP!

Discussion in 'Decorating and Painting' started by devs, 5 May 2021.

  1. devs

    devs

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    Hi guys, I've got an issue where I have treated every knot on a shepherds hut that I'm about to repaint (same colour) and am 100% sure that it will flash through as also treated some internal wood with the same solution and covered with a darker paint.

    Is there a product that I could go over the Rustins Knotting with prior to repainting?

    The paint that I've been using is Dulux Ultimate Opaque Paint (@ £100 per tin!), that is solvent based and supposably suitable.

    Any thoughts or suggestions would be helpful.

    Many thanks.

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  3. jacko555

    jacko555

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    No idea about compatibility for outdoors: I used zinnser bin matt white shellac spray on knots before painting untreated wood / fire surround / architraves.

    Worked perfectly, no bleed through.

    Maybe?
     
  4. Dallypro

    Dallypro

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    2nd Vote for Zinsser B.I.N.
     
  5. devs

    devs

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    Thanks guys is this the same product, spot outdoors? If so I have used it before on some painted brickwork outdoors and it melted through when painted over.

    Just wanted to check as I'm a little reluctant to use again and have the same issue. Thanks.

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  6. jacko555

    jacko555

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    I used this - the shellac spray.

    No experience with the tinned stuff. Not sure if its the same or not.

    Didn't melt when I applied gloss (both oil and water based, on different things). Really resinous pine knots didn't bleed or flash.

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  7. devs

    devs

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    Thanks mate, do you feel that it will hide the already applied knotting solution?
     
  8. jacko555

    jacko555

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    Unsure. Worth a tenner for a punt? Try it on a plank, then, overpaint with the Dulux?
     
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