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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book.

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    • CommentAuthorJamster
    • CommentTimeOct 17th 2018
    Slowly moving on with my garden room build - just about ready to put the roof on it. Had always intended to use cedar shingles, but still a bit wary on the cost. Its going to be around 24m^2 of roof which is basically 10 packs of shingles which is going to be about £600 I reckon.

    Is there anything else I can use that works out less than ~£18 a square meter? Pitch is 30 degrees on a 'peaked' roof, has osb on at the moment but no membrane or battens. I would something that 'looks nice'; the building will be clad in waney-edge timber.

    Green roof has been veto'd and I think its likely to steep anyway. Tin sheets are also verbotten.

    Leaves me with (reclaimed) slates, other types of shingles and hopefully some other suggestions?
    • CommentAuthorbarney
    • CommentTimeOct 17th 2018
    How about overlapping boarding

    I inherited and old but sound shed (about the size of a single garage) at my current abode - I stripped the roof back and covered with OSB, several layers of good old fashioned roofing felt with cold adhesive, battened it out and laid 6" x 1" boards vertically up the roof with a 40mm gap - covered the gaps with a 3" board

    Made the ridge from 2 x 6" boards nailed together with a bit of cheap 5" tin flashing under that

    Gave the lot a good coat of imitation creosote (couldn't get the proper stuff) - it's been there about 8 years now - not one of the boards has cupped, warped, split etc - although on hot dry periods, it can be seen that several boards are trying to move - they flatten back down once the weather gets a bit wetter.

    About 2 years after I roofed it, I inherited a few PVC windows being swapped out at a neighbours - so I fitted those to new openings and re clad the walls in the same fashion as the roof (including the bitumen felt) - still looks like a shed not a maker space, and not a trace of water ingress - lots of spiders living in the gaps between the boards on the roof


    • CommentAuthornick1c
    • CommentTimeOct 17th 2018
    We put a (tuin) log cabin in the garden. It came with 'free' shingles, you could choose the colour & shape. We chose the plain black ones, they look good and seem much more robust than felt - they claim a 10 year + life. You could check their site for options.
    • CommentAuthortony
    • CommentTimeOct 18th 2018
    We’re those the felt ones in strips of four?

    Cheapest is felt, I use 4mm torch on green or red and fix vertical barrens at the ends and regular spaces on the roof over the felt to the wind tearing it off.

    The asphalt shingles are good and I would say 30 year life.
    ''Slowly moving on with my garden room build - just about ready to put the roof on it. Had always intended to use cedar shingles, but still a bit wary on the cost. Its going to be around 24m^2 of roof which is basically 10 packs of shingles which is going to be about £600 I reckon.''

    This is only gut feeling - I have never bought shingles - but am I alone in feeling that that's really not expensive for shingles? I realise they are probably cut, not riven, but I would have thought that there'd need to be a good allowance for wastage too, no?
    • CommentAuthorowlman
    • CommentTimeOct 18th 2018
    Go for something like these, like nick1c said, mine too came with the cabin. They are easy to lay and seem to be weathering well.
    We used slate-effect pressed steel interlocking tiles on a garage, looks pretty good.
    • CommentAuthorJamster
    • CommentTimeOct 24th 2018
    Thanks for your comments everyone - that gives me food for thought.

    Nick - re cost and wastage, I've allowed 10% which I don't think is far off - its a relatively simple shape so not too much to loose I hope. I've done a little bit with shingles in the past (alpine-chalet themed duck house - don't ask!) and found that ~2m^2 from a pack nominally set for 2.28m^2 is achievable... I think its probably a 'fair' cost, just more than I'd remembered it would be if that makes sense...
    • CommentAuthorretrofrit
    • CommentTimeOct 25th 2018
    I've used Firestone rubber sheeting, very cheap, easy to lay , long lasting,and unfortunately plug ugly. Recently saw a hut with recycled plastic slates in an attractive green, Kirkstone ? They looked really good.
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