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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.

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    • CommentAuthormatt1
    • CommentTime5 days ago
     
    I am currently in the middle of a self build using a timber frame system. The windows have now been installed in the frame and I am looking at using pro-clima tescon profile tape inside to seal them before the plasterboard goes on.

    Before doing this I was advised to use expanding foam in the gaps between the window and the frame however many of the gaps are too small to fit even a small expanding foam nozzle in (1-2mm) at the smallest. Am I ok to leave these gaps and rely on the tape or is there a method I am missing to get the foam in?
    • CommentAuthorgravelld
    • CommentTime5 days ago
     
    I've used one of those syringes for filling inkjet cartridges clamped on. Also I think JSHarris came up with a much better engineered approach. But first you need to work out whether this is even the right thing to do.
    • CommentAuthormatt1
    • CommentTime5 days ago
     
    Sounds good, how did you attach the syringe to the foam gun?
    • CommentAuthorHats
    • CommentTime5 days ago
     
    May not work in this situation but i needed to seal between some joints in uneven timber, only a few mm but you could feel the wind... i drilled a few holes the same size as the nozel along the length of the timbers (in the offending gap) and just squirted foam in, worked really well ! Cut back the foam and taped. Job done.
    • CommentAuthortony
    • CommentTime4 days ago
     
    Acrylic sealant?
    • CommentAuthorgyrogear
    • CommentTime4 days ago
     
    Posted By: Hatsi drilled a few holes the same size as the nozle along the length of the timbers (in the offending gap) and just squirted foam in, worked really well


    Good idea, I'll have to give that a try...

    gg
  1.  
    This stuff was one of our favourite products while building.

    http://www.coldstop.co.uk/products/other/view/58b0644183a745715ca97197/omega-liquid-sealing-compound

    Ideal for sealing gaps too small for foam and easier to use than acrylic. Also really good for temporary waterproofing (on timber that will later be covered) and as a secondary back up waterproof layer. we used it all over the place.
    • CommentAuthormatt1
    • CommentTime4 days ago
     
    Thanks for the suggestions I will be trying the sealing compound and may well drill some holes around the frame too.
    • CommentAuthorgyrogear
    • CommentTime4 days ago
     
    I suspect that simple PVA ("white wood glue") would also do the business just as well... will give it a try & report back...

    gg
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