How to prepare dusty subfloor?

Discussion in 'Wood' started by AlexJ, May 24, 2024.

  1. AlexJ

    AlexJ New Member

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    Hi all,

    I used setcrete self levelling compound to prepare my floor for laying down some engineered wood. Currently the finish of the setcrete is very dusty. Will the wood floor adhesive stick to this? Should I use a primer, and if so, which one?

    Thank you in advance!
     
  2. Rugmunching

    Rugmunching Well-Known Member

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    Was it a water mix?
     
  3. AlexJ

    AlexJ New Member

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    It was indeed
     
  4. dazlight

    dazlight Super Moderator

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    Did you add to much water ?

    scrape the top
    Prime it , maybe twice.
     
  5. AlexJ

    AlexJ New Member

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    Yeah I think I did... it was suggested to me to add a bit extra water to get it to spread more easily. In hindsight not such a great idea.
     
  6. dazlight

    dazlight Super Moderator

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    No as it weakens the mix and leaves a skin / dust on top
     
  7. Rugmunching

    Rugmunching Well-Known Member

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    Not the best screed to work with I'd imagine but too much water sounds like your issue.

    Like Daz has said, scrape up and start again. Wouldn't be attempting to bond wood to that.

    Did you have your subfloor damp tested for moisture?
     
  8. Rugmunching

    Rugmunching Well-Known Member

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    Actually Daz didn't say start again :D ...but I would
     
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  9. William Jones

    William Jones New Member

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  10. Flooring Factory Outlet

    Flooring Factory Outlet New Member

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    For a successful installation of your engineered wood flooring, the surface needs to be clean and dust-free. The dusty finish on your setcrete self-levelling compound may prevent the adhesive from sticking properly.

    Yes, you should use a primer to ensure a good bond. A recommended option is a PVA (polyvinyl acetate) primer or an acrylic-based primer designed for use with self-levelling compounds and wood floor adhesives. Be sure to follow the primer manufacturer's instructions for best results.
     
  11. Rugmunching

    Rugmunching Well-Known Member

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    PVA :D:D...
    Ohhhhh goshhhhh
     
  12. dazlight

    dazlight Super Moderator

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    Copy and paste again . You never use PVA
     
  13. Simon Grimley

    Simon Grimley Well-Known Member

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    AI mateā€¦
     

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