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Discuss Hardiebacker confusion in the DIY Tiling Forum area at TilersForums.co.uk.

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  1. Dan Fitchie

    Dan Fitchie Active Member

    Location:
    Keighley
    Hi, my first post and as the title suggests my first attempt at renovating a bathroom.
    I bought some hardiebacker 500 for boarding around the shower area with the intention of using the fixing to masonry instructions given by hardiebacker ie high strength gap fill adhesive and screws into the wall. However after stripping off the old blown plaster and render down to brick have found the brick work to be very uneven, and maybe I'm thinking about it wrong but I can't figure how I'm going to get the boards level before mechanical fixing using just a small amount of gunned adhesive. Does anyone have any ideas?
    Thanks
     
    • Like Like x 1
  2. Bond

    Bond TilersForums.co.uk Addict

    Location:
    Highland
    You could strap the wall with pre-treated timber battens,e.g. 25 x 50mm. And fix board to that.

    or glue -on packing pieces to straighten wall, prior to boarding.
     
  3. callatiler

    callatiler Trusted Advisor Professional Tiler JOTM Winner Top Contributor

    Location:
    Aberdeen
    You would be better to prime/stabilise brickwork and get some powder bagged flexible tile adhesive mixed and dot dab boards on plumb and level marking where you have put dabs on outer face of boards so when dry drill screw and mechanical fix thru boards and dabs securing onto brickwork.
     
  4. Dan Fitchie

    Dan Fitchie Active Member

    Location:
    Keighley
    Thanks for the suggestion bond. It's a tight room and the battens would bring the tiles past the door frame on one of the walls. Forgive my ignorance but what do you mean by glue on packing pieces?
     
  5. Bond

    Bond TilersForums.co.uk Addict

    Location:
    Highland
     
  6. Dan Fitchie

    Dan Fitchie Active Member

    Location:
    Keighley
    I didn't think you could dot dab hardiebacker? It says not to on their faq or are they referring to solely using dot dab. Is it OK with the additional mechanical fix?
     
  7. Bond

    Bond TilersForums.co.uk Addict

    Location:
    Highland
    Would go with callatiler suggestion.
    Packing pieces, of various thickness spaced to straighten wall, then glue and fix through these.
     
  8. jcrtiling

    jcrtiling Professional Tiler TTA Member

    Location:
    Salisbury
    Take the hardi backer back . Get some wedi / Marmox or jackoboard then dot and Dab and mechinacally fix when dry
     
    • Agree Agree x 2
    • Like Like x 1
  9. callatiler

    callatiler Trusted Advisor Professional Tiler JOTM Winner Top Contributor

    Location:
    Aberdeen
    Flexi tile adhesive dabs and mechanical fixed boards will be fine but you could have used tile insulation boards ie Wedi, marmox, Kerdi which are lighter easier to cut and more suited for walls. If you can get refund and swap over that’s what I would do. Same installation method only difference is you need a purpose made washer per screw that supplier of boards should have in stock.
     
    • Agree Agree x 1
  10. impish

    impish Trusted Advisor Professional Tiler

    Location:
    Preston, Lancs
    A shame that you've got hard. It's so readily mis-sold. If you can return it, then do so and get 20mm wedi/marmox/jacko boards instead. These can be easily fixed to uneven brick using dabs of tile adhesive.
    If you're stuck with hardi though, I'd fix it with dabs, but you'll need to also use mechanical fixings such as frame fixings.
    Please also remember hardi isn't waterproof in a wet area. You'll need to tank it.
     
    • Like Like x 1
  11. Rookery

    Rookery Professional Tiler

    I'd dot n dab fresh plasterboard, then tank. Simples.
     
    • Like Like x 2
    • Agree Agree x 1
  12. Dan Fitchie

    Dan Fitchie Active Member

    Location:
    Keighley
    Appreciate the responses, I think I'm going to return them. They are from b and q so should be fine.
    I'm struggling to find any stockists nearby for marmox, wedi or jacko boards.
    I know I can get nomoreply which can be dot and dabbed. If hardiebacker was going to need to be tanked anyway which again I didn't realise, can I just use moisture resistant plasterboard and tank that? Or is it not recommended for shower areas?
     
  13. Plan Tec Tiling

    Plan Tec Tiling Administrator Staff Member Trusted Advisor Professional Tiler JOTM Winner Top Contributor

    Location:
    Wimborne, Dorset
    Save your money and use standard square edge plasterboard. If fixed and tanked correctly, you will have no issues
     
    • Agree Agree x 3
    • Like Like x 2
  14. Localtiler

    Localtiler Trusted Advisor Professional Tiler JOTM Winner Top Contributor

    Location:
    Yorkshire
    If space is limited for building out, you might as well stick with the hardie backer dot and dabbed as its 6mm thick and not 20mm like impish suggested. You can actually dot and dab with 12mm thick wedi type board tho.
     
  15. Dan Fitchie

    Dan Fitchie Active Member

    Location:
    Keighley
    The
    The hardie I have is the 12mm one not 6mm
     
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