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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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    • CommentAuthorgravelld
    • CommentTimeFeb 7th 2018
     
    Anyone used any of the EPS products to fit in rafters, e.g. Warmsqueeze? Experiences?

    What I don't understand about them is that given the basic EPS is rigid, how are the sheets sized to have the "expandable bits" at different places to cope with different rafter centres?

    Also, are there any which squeeze above and below? I want to sandwich between plasterboard underneath and OSB above.
    •  
      CommentAuthordjh
    • CommentTimeFeb 7th 2018
     
    Posted By: gravelldWhat I don't understand about them is that given the basic EPS is rigid, how are the sheets sized to have the "expandable bits" at different places to cope with different rafter centres?

    If you read the instructions, it's quite clear. Cut the board to a slightly oversize width (at one side) and use the 'squeeze' in the other side to fit.

    Also, are there any which squeeze above and below?

    Not as far as I know. How would that work? With rigid boards you normally fit slightly undersize, with rock wool or similar you can squeeze a bit if necessary.
    • CommentAuthorgravelld
    • CommentTimeFeb 8th 2018 edited
     
    Posted By: djhIf you read the instructions, it's quite clear. Cut the board to a slightly oversize width (at one side) and use the 'squeeze' in the other side to fit.
    I can imagine that; it's the different allowances for centres of different sizes I'm worried about, maybe this is a non-issue because all centres are similar. Just didn't want a lot of waste.

    Posted By: djhNot as far as I know. How would that work? With rigid boards you normally fit slightly undersize, with rock wool or similar you can squeeze a bit if necessary.

    No idea! Best I can think of is a small amount of wool above and below.
    • CommentAuthorDarylP
    • CommentTimeFeb 8th 2018
     
    the 'compressible' side is cut zig zag along the length, same as a wooden flexi-snake.
    Not worth the expense IMHO. just measure twice carefully, and cut once....:wink:
    Cheers
    •  
      CommentAuthordjh
    • CommentTimeFeb 8th 2018
     
    Posted By: gravelldJust didn't want a lot of waste.

    A lot of waste is inevitable with rigid boards, unless on a purpose-designed new build or with extreme luck. Or when using them for EWI rather than between studs. Even flexible batts are a pain fitting all the offcuts in. Something blown-in is a lot easier.
    • CommentAuthoradam_w
    • CommentTimeFeb 8th 2018
     
    Have you considered Actis Hybrid Range? If not, it might be something worth looking up?
    • CommentAuthorgravelld
    • CommentTimeFeb 8th 2018
     
    Looks like multifoil :shocked:

    Hmmm... blowing in. Nice idea, trouble is for my project there won't be a huge amount of m2 to cover.
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