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Thread: re-felting a shed roof

  1. #1
    bikermike is offline Tuber
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    Default re-felting a shed roof

    (not sure if this should be somewhere else - please move if I've got it worng).

    My shed has a pitched roof. One side has had new felt put on it recently, the other side hasn't, and it's starting to need it. There is a piece of felt in the shed, I'm assuming the chap never got round to it.

    My plan is (assuming the felt is big enough) to put it over the top of the worn-out felt and a bit over the ridge (so it is above the newer felt on the newer side), so the join is the right way up for water to flow over it.

    Do I just nail it in place (using proper galvanised roofing felt tacks?).
    Do I need to remove the old felt?
    Any other hints and tips?

    how far through it do you think i'll get before getting fed up and torching the shed...

  2. #2
    ESBkevin is offline Tuber
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    In theory you can nail over the current layer if it's essentially complete and fairly even. You are correct to flap over the peak/ridge onto the newer side. It is important to secure all edges to prevent the weather (wind) getting under it. Typically slats down either end of the pitch secure it there and wrap it under the side, again a slat may help to keep it secure against the wind even if water can get between the slat and the outside felt. You can buy a pitch based adhesive for sticking down the new felt but in your case I'd stay cheap and patch what you have for now and expect upwards of 5 years from it. Nect time strip it back to the bare wood and glue/tack a fresh layer if the shed warrents the effort.
    4Shoes likes this.

  3. #3
    nickdub is offline Early Fruiter
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    If you have the tools I'd cut some thin strips of wood to length - drill through then put preservative on them off the roof - then screw them down over the felt so they run down the roof from the ridge to the bottom edge at about 18" centers.

    I'm a sort of belt and braces person though :-)
    ESBkevin and 4Shoes like this.

  4. #4
    bikermike is offline Tuber
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    good point re ends (sides). I hadn't thought to wrap it round.

    I think I'll stick it over and bodge. The shed is dry up top, but has a soft bottom, so I'll need to either throw it or re-bottom it within that timescale.
    4Shoes likes this.

  5. #5
    Greenleaves's Avatar
    Greenleaves is online now The Weed Fairy
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    On my old plot, I used torch on felt, a lot thicker and no nails or batten needed, downside is you need the gas torch
    4Shoes likes this.
    Mod with attitude!

  6. #6
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    I refelted my shed roof a couple of years ago. It was freezing cold at the time and after my fingers nearly dropped off, I only finished the side that the old felting had fully lifted off. It's held up fairly well, but having tattier felt on the other side has definitely provided patches where the wind can get in and cause new tears to develop. If you can bear to do the whole thing, it might be better to just get it done.
    4Shoes likes this.

  7. #7
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    All advice given is good. Only additional bit is to ensure that you overlap the felt enough so that any rain blown up under the join doesn't leak through.

  8. #8
    Two_Sheds's Avatar
    Two_Sheds is offline Compost Everything...
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    After years of felt frustration, I switched to coro/onduline, that’s brilliant
    Last edited by Two_Sheds; 08-09-2018 at 09:04 AM. Reason: Spelling
    All gardeners know better than other gardeners." -- Chinese Proverb.

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