breathable membrane over or under roof battens

Discussion in 'Building' started by fourteen0407, 27 May 2021.

  1. Notch7

    Notch7

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    Decent claw hammer will get under the battens - pull up at each joist - if you pull from one end you will snap

    Or one of these
    https://www.screwfix.com/p/magnusso...aGDIPqjKYQNrawtHkiwaAtDwEALw_wcB&gclsrc=aw.ds
     
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  3. ^woody^

    ^woody^

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    A Stanley Wonderbar is great for springing the battens, or a similar flat crowbar. Claw hammer at a push.

    Slowly lever the batten from the rafter, and when its up about 25mm, hit the batten down (not the nail) and the nail head should stay up, then pull the nail out.
     
  4. fourteen0407

    fourteen0407

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    Or is it possible to change to counter-battening system. So lay the membrane ontop of these battens and maybe add some battens going vertical and that way dont need to lift up these battens.

    The battens are 25x50.
     
  5. mikeey84

    mikeey84

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    Unfortunately that wouldn't work.

    Unless you added 2 more layers of batterns, as the membrane will still hand down between the batterns as was said previously.

    And you can't attach tiles to a vertical battern
     
  6. Notch7

    Notch7

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    Unfortunately whatever you do, the membrane is a water trap.

    If you had put membrane on battens any sag would still allow water to run down.
     
  7. fourteen0407

    fourteen0407

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    Ok got it thank you all for your advice looks like they all coming up.

    I used standard nails 2 inch
     
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  9. stuart45

    stuart45

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    Next time put the membrane on before the battens.
     
  10. ^woody^

    ^woody^

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    Ok Captain Hindsight. :(
     
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  11. stuart45

    stuart45

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    They are a bit short, but just as well as it makes life easier.
     
  12. ^woody^

    ^woody^

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    Buy some 3" nails while you are at it.
     
  13. fourteen0407

    fourteen0407

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    Thankyou all
     
  14. DIYnot Local

    DIYnot Local

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