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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.

Buy individually or both books together. Delivery is free!

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    • CommentAuthorJennyField
    • CommentTimeJun 21st 2007
    Has anyone any experience of using solar slates or tiles as opposed to panels for hot water production? I have found one manufacturer/distributor on the internet with useful information - Solex Energy Ltd. The National Trust use solar slates but their projects will be considerably larger than ours. Help appreciated.
    • CommentAuthorJane Smith
    • CommentTimeJun 24th 2007
    Solar slates are for the production of electricity only, not hot water. Unless you intend to use them to power an immersion heater, which would be very inefficient.
    • CommentTimeJun 24th 2007 edited
    Jane - you can get Solar hot water 'slates'
    The design is:

    Lay a grid over an insulated roofing felt (insulated underneath) then install glass/plastic slates on top.

    The collector performance is low and there may be condensation issues as the void is not sealed (or even it is, the sealing is on a roof, not a factory).

    WIll, like anys system produce hot water in summenr, but little chance in winter months (realy need evacuated tubes for a longer 'solar season')

    As you effectively build the collector on the roof the price relatively low, but you need more, etc.

    I think they are a very interesting idea and may appeal to planning officers, but I would rather spend my money on a pannel that has a reasonable expectation of lasting 20-30 years
    • CommentAuthorSolar bore
    • CommentTimeJun 26th 2007
    I considered using this method, got basic information and prices, sent pictures of our property and waited for Installation costs nothing ever came, rang him a couple of times gave up in the end decided the reason I was not getting any joy was the distance between us He's on South coast I'm in Chester.
    Recently received email saying they were exhibiting at a show.
    • CommentAuthorJennyField
    • CommentTimeJun 27th 2007
    Thanks for the comments and advice. Our plan was to use a ground source heat pump for the underfloor heating and maybe a solar solution for the hot water in the summer. I must admit that I was quite fascinated by the Solex Energy solution since we have to re-roof quite a large outbuilding (currently corrugated sheets) which could also house the heat pump compressor. I'm not keen on the look of solar panels but I think any planning officer would prefer them to the rusty sheets that are there at present! No, forget I said that, nothing is certain in the planning world.
    • CommentAuthorSolar bore
    • CommentTimeJun 28th 2007
    why change your plans get in touch with Solar century they have developed solar thermal / PV roofing system for new buildings, they used to have a demonstration roof behind Waterloo station, I visited some yrs ago.

    The reason is because thermal helps to cool PV panel thus increasing its efficiency, which drops off as they get hotter, I however have not heard how good they are at producing hot water?

    if you find out will you let us all know.

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