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  1. #1
    Join Date
    Mar 2009
    Location
    Sydney
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    Default Patching broken floorboards

    Gday all,

    In the process of pulling up the old carpet to put down a new floor. We will be going with a Hybrid plank(not everyones cup of tea I know).

    The house has old 90mm wide floorboards directly on the joists. Could sand and finish them I know but I don't think they look that good and all the rooms aren't the same.

    So at the front door there has obviously been some water issues at some time and a few of the boards are like weetbix.

    Possible solutions:

    1. pull up all the boards and replace. Don't think so!

    2. Cut and pull up boards back to a joist and replace with yellow tongue. So essentially have a roughly 1200 x 800 yellow tongue patch.

    3. Put a new sub floor down over whole house (well sort of, a layer of Masonite). Expensive.

    I was thinking of option 2 but am not sure if it is a viable option. To me it seems like it should be fine.

    I will likely also be putting a self levelling compound down to just take out some of the small irregularities. I am sanding the floors first so they will be somewhat flat and level. Only one I've found really is Dunlop from Bunnings, any others worth looking at?

    Thanks for the help
    Shane

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  3. #2
    Join Date
    Mar 2009
    Location
    Sydney
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    650

    Default

    Looks like I might have found my answer.

    Do not install Aspire flooring directly over existing timber strip (solid) or engineered timber subfloors that have been installed directly onconcrete or timber strip (solid) & engineered timber floors installed on structural bearers and joists or timber battens. (Refer point 4.)
    4. Aspire Hybrid flooring is not recommended for installation directly over timber strip floors (solid & engineered), floatingfloors or fire-retardant treated plywood or preservative treated plywood. An additional layer of structurally rated plywood orhardboard (Masonite) or OSB approx. minimum 6 or 7 mm thickness should be installed over the existing floor. Do not use additionalunderlay for normal installations it will compromise the click system and void the warranty. Refer pg. 1 Acoustic installs Multi-Res &Commercial.


    Are my floors strip flooring. Flooring laid straight on joists?

    Sounds like option 3.

    cheers
    Shane

  4. #3
    Join Date
    May 2012
    Location
    Woodstock (Cowra)
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    74
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    3,373

    Default

    Strip flooring on joists. Cut the rotten boards back to next joist and USE PLYWOOD to replace rotted boards. Yellow tongue over a single span will will bow and being an entrance door will get a fair workout.
    The person who never made a mistake never made anything

    Cheers
    Ray

  5. #4
    Join Date
    Mar 2009
    Location
    Sydney
    Posts
    650

    Default

    Thanks Ray.

    The entrance hall is quite short with 7 joists crossing. I was going to cut back to joist 3 for the yellow tongue/ply. So the patch will span 2 1/2 and the existing 4. Like below, is that what you mean.
    Screen Shot 2020-01-23 at 21.09.27.jpg

    And what I have is strip flooring? So it looks like option 3? I'm certainly not against this as this was my original plan but was told by most flooring places its not required but seems it is.


    cheers
    Shane

  6. #5
    Join Date
    May 2012
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    Woodstock (Cowra)
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    Default

    Spanning is ok
    The person who never made a mistake never made anything

    Cheers
    Ray

  7. #6
    Join Date
    Jul 2011
    Location
    In between houses
    Posts
    1,784

    Default

    Yes you have strip flooring. My advice ( after pulling up plenty of other people’s DIY floors that have gone wrong) is to use a self levelling product called “Agnews water putty” do not use a cement based product such as Ardit as it will break up under your levelling substrate and the floor will sound like it has eggshells under it. If you use plywood (I would) for patching, seal it first with paint before fixing down. There’s nothing wrong with engineered floating type flooring, it has lots of benefits. Good luck.

  8. #7
    Join Date
    Mar 2009
    Location
    Sydney
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    Default

    Thanks for advice guys.

    So i got some underlay ply to lay down first. I’ve seen it done and the instructions say to fix with nails/staples every 150mm to existing floor, even if hardwood.
    But part of me feels that this goes against everything we know about wood movement.

  9. #8
    Join Date
    May 2012
    Location
    Woodstock (Cowra)
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    74
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    3,373

    Default

    Do exactly as the instructions say, all good
    The person who never made a mistake never made anything

    Cheers
    Ray

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