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Advice required... grp or felt?

Discussion in 'Roofing and Guttering' started by cannonfoda, 23 May 2015.

  1. cannonfoda

    cannonfoda

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    Apologies if this is not right place to post however need some advice and thought that this was best place to look...

    had a few quotes for a replacement roof for garage and need advice as given lots of options. currently tiles on roof but pitch way too shallow for them - old owner build himself- looking to replace with felt or grp - boarding below is very water marked inside however one company suggesting leaving it as it was structurally ok ??? is this right or are we better replacing the boarding with new OSB?

    almost thinking of doing myself although little DIY experience. had 3 quotes so far ranging from £2300 for replacement felt/boards, £2350 for replacement felt only (keeping original boarding???) or £3k for GRP roofing?

    Any advice appreciated.

     
  2. geraldthehamster

    geraldthehamster

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    It's not entirely clear from the picture, but that looks like chipboard rather than OSB. If it is chipboard, then it's entirely the wrong material for that application.

    Cheers
    Richard
     
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  3. Ker-plunk

    Ker-plunk

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    The chipboard deck is saturated, warped and blown it will need replaced.

    What is the pitch on the roof?
     
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  4. cannonfoda

    cannonfoda

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    thanks for the replies. yep after googling what chipboard and osb looks like it is 100% chipboard - looks like panels used for flooring (guy that had house before us and built garage acquired stuff off back of lorry when building it). pitch on roof is about 10 degrees.

    dimensions of the roof are 8.3m by 6m. is it a simplish job to replace?
     
  5. Ker-plunk

    Ker-plunk

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    Simple enough job to do, depending on your abilities.

    Stripping the existing deck, tiles,felt,straps etc and skipping them will save on labour costs.

    You will need to use a minimum 18mm ply to re-deck it.

    Firestone rubber epdm is supposed to be diy friendly with a long lifespan...never used it though.

    Where are you in west lothian?
     
  6. cannonfoda

    cannonfoda

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    Bo'ness.
     
  7. Ker-plunk

    Ker-plunk

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    I'm in Grangemouth tomorrow if you want me to have a look i'll give you some advice.
     
  8. ^woody^

    ^woody^

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    If you want to re-tile, there are options for tiles that will do 10°- from Forticrete, or you could fit one layer of felt (plus boards) and then batten and tile
     
  9. DIYnot Local

    DIYnot Local

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