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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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    • CommentAuthormook
    • CommentTimeApr 17th 2007 edited
    Anybody got any good ideas how to use up offcuts from fitting rigid insulation. I insulated under my floor and I now have a large quantity of pieces about 1.2m long 20cm to 30 cm wide, Kingspan 75 mm thick.

    I can use some to make a insulated lid for my compost heaps but unless I can think of something creative the rest seem destined for landfill.
    Have you insulated the back of your loft hatch?
    I had wondered about shredding and loose-filling with it. The idea came via a colleague who used to live on an island. The (wood) shredder was used for pretty well everything - glass, cans, all sorts. I don't know whether it would work, but don't know why it wouldn't. Thoughts, anyone?
    Have you got a dog? he might like an insulated kennel.....
    thought about it but didn't dare suggest it to my partner.
    • CommentAuthordavid
    • CommentTimeApr 17th 2007
    I've just fitted 200 sq mtrs and have no bits left. I do have three full sheets.
    I fit all the bits together tightly. It's easy to cut it with an old carbon steel table knife.
    Did you have to lay it in big pieces?
    • CommentAuthorGuest
    • CommentTimeApr 17th 2007
    I had sheets 1.2 x 0.6 m and had to fit between uneven and wavy floor joists at 40cm - 55cm centres - hence the offcuts.
    I wondered about shredding it too - but since these boards are mostly air shredding it would severely reduce the insulation properties?
    • CommentAuthormook
    • CommentTimeApr 17th 2007
    ... forgot to sign in that last comment was from the original poster, me
    The junction between bottom of rafters and floor in loft is where I put my off cuts, it's a weak link but you have to make sure there is still air flow over the insulation though!
    • CommentAuthorMike George
    • CommentTimeApr 17th 2007 edited
    I used offcuts in my loft on the dwarf walls between the heated and unheated spaces. Build the stud partition as normal, [structural if necessary] fix a layer of ply or plasterboard, stick your offcuts on, then vapour barrier, then battens, then plasterboard over again. Better than insulating between the studs as cold bridging is eliminated.
    • CommentAuthorGuest
    • CommentTimeApr 18th 2007
    Use them to insulate a haybox for finishing the cooking of rice, stews etc..

    • CommentTimeApr 21st 2007
    I'd offer them to a Freecycle group in your area if you no longer need them.
    • CommentAuthorGuest
    • CommentTimeMay 6th 2007
    yep i agree with last post. just cos you cant find a use doesnt mean someone else wont find them to be perfect. recycling is way better than a run to the tip.
    • CommentAuthorpyrogaz
    • CommentTimeMay 9th 2007
    I do the same as Jeff Norton. I've insulated the last three houses I've build with PU in the walls and floor, the off cuts are then used around the eaves but still leaving the continuous ventilation uncovered. Any remaining offcuts I use above bathrooms by fitting them together like a jigsaw with no picture for guidance! The loft still receives it's rockwool insulation as well but only 200mm on top of the PU instead of the 350mm elsewhere.
    • CommentAuthorpatrick
    • CommentTimeMay 10th 2007
    if you live near warwick give them to me!
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