green chipboard type stuff

Discussion in 'Subfloor Preparation' started by RMG, Jul 27, 2018.

  1. RMG

    RMG Well-Known Member

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    guys wtf is this stuff and what can i do to level it please? can i use a flexible screed? :confused:
     
  2. Spacey

    Spacey Super Moderator Staff Member

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    Only if you prime with Uzin 630 other wise ply it
     
  3. RMG

    RMG Well-Known Member

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    Sheesh, that's pricey. Bit of mapei renovation wouldn't work? Perhaps i should buy some sort of sander for the high ridges and do ply then, good excuse to use the cn45 for the first time
     
  4. RMG

    RMG Well-Known Member

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    why is that stuff even used? it's so shite with all the ridges
     
  5. merit

    merit Well-Known Member

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    Because it’s cheap


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  6. RMG

    RMG Well-Known Member

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    holy crap man, calcium sulphate downstairs not grinded off, this shite upstairs, front door won't open, sinks stuck on the walls with mastic and thick mastic on the bottom of the skirting boards (for pressure test i presume). This is why people say don't buy new houses anymore.
     
  7. Rugmunching

    Rugmunching Well-Known Member

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    That's standard on mojority of new builds.
    Cutting out the 40 tubes worth of gunk and cleaning the skirts I charge extra now. Can take me up to 2hrs before I've even got to taking the straps off my str :mad:
    If you are lucky you'll get one where it just pulls off the skirts in a nice complete strip but before I touch it I stress to the customer there will be parts where the paint off the skirts come with it. Sick and tired of cleaning/rectifying other trades crap shoddy lazy efforts.

    I turned one down last week because the customer won't go for the grinding. I didn't get to put a hygro on it after showing risk in places on my mms then he suggests just sanding it down and fitting straight to it because the builder said you can do it...see youuuuuuuuuuuu later
     
  8. RMG

    RMG Well-Known Member

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    i'm doing laminate so at least i don't have to worry about grinding or owt. Everything is about being cheap to maximize profits to the top guys, makes me want to puke, preferably on their faces! Only way is to work for respectable companies or direct to customers nowadays innit. Too many greedy bosses.
    Think i might price for planing down the ridges and then putting down some 6mm ply. I'd like to screed it because it's faster.
     
  9. merit

    merit Well-Known Member

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    I wouldn’t trust screed on it mate. Unfortunately customers like to try and tell us how to do their job as they are trying to save some money. Normally as they’ve had every last penny screwed out of them by all the other trades that are in before us. Most are broken by the time we get there lol


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  10. Spacey

    Spacey Super Moderator Staff Member

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    What ridges ? Razor scrape the excess glue from the seams then 9mm ply or razor scrape the excess glue then prime with 630 and screed
     
  11. alban

    alban Well-Known Member

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    As above , the ridges are residue D4 glue , it expands and foams out . Sharp scrape and they wil come off .
     
  12. RMG

    RMG Well-Known Member

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    The boards are bowed. If it was just the glue i'd have scraped it off already. It's the second time i've seen this stuff and both times the boards are bowed and need sorting. Why not use 'normal' chipboard that is flat in the first place? Only fitting laminate but still have to do full blown prep... new houses suck.
     
  13. Neilydun

    Neilydun Well-Known Member

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    I think the green boards, are supposed to be moisture resistant. I`ve often seen the boards in, but no roof on.
    We did one a couple of months back, which had the same problem. All 6mm plyed, but the chipboard moved, and it all failed. About 600 sq. m
    The job was at the MC risk, and all had to be replaced, at his cost.
     
  14. RMG

    RMG Well-Known Member

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    I see, sounds like a bad plan to install it and let it get soaking wet, makes a lot of sense to how it's become bowed on this job as well. I think it can be saved with some planing and 6mm ply as it's all dried out and not too bowed. Thanks for that gem of experience
     

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