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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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    •  
      CommentAuthorSteamyTea
    • CommentTimeDec 23rd 2012
     
    Posted By: Nick ParsonsAre popes more or less likely to feel the cold tan members of the general population?


    Posted By: Nick Parsonscold tan


    That would be windburn then, so yes, or no, if you rather :bigsmile:
  1.  
    Every time I type tings it seems to miss out te letter ' '. owever, tat's not so muc of a problem
    •  
      CommentAuthorSteamyTea
    • CommentTimeDec 23rd 2012
     
    • CommentAuthornikhoward
    • CommentTimeDec 24th 2012
     
    Now edited! Cheers guys, have a good Xmas
  2.  
    Nikhoward wrote: ''Now edited!''

    Tish! That means anyone looking anew at the thread will jut think I am mad. Ah......
  3.  
    Hi Nick P and Nik H...

    My sketch was to show proposed insulation as part of a loft conversion. 25mm gap between felt/roof tiles, and top side of insulation between roof rafters. This would join (somehow?!) to the EWI, which would wrap over the top of the cavity wall, thus providing a continuous blanket all the way around the house with no cold spots.

    Questions I haven't yet managed to find the answers to:

    1. Do I 'dot and dab' the insulation boards to the external brick wall?
    2. If not, what fixings do I use?
    3. Do I have to leave an air gap between insulation and brick? I assume NOT, as this will only increase the potential of interstitial condensation.
    4. Is a french drain/floor gutter a good idea to carry any rain away from the house, and prevent it going underneath the insulation into the brick wall?
    5. Please can you give examples of the wire mesh used to fix to the insulation, which will give the external render something to grab on to?
    6. Should I be using a breathable or non-breathable external render? I assume NON breathable. Examples please if you can.

    Most importantly, where should I pay most attention to preventing condensation build up? I gather this is the least risky method of insulating ones house and not causing condensation.

    I'm going to try this myself, so please relay any horror stories, and things to avoid, and things to remember!!
  4.  
    P.S. I cannot seem to get this forum to notify me when threads have been updated. Any pointers??
  5.  
    Perhaps ask James ingram, as I know he's done a few EWIs. What insulant are you using? If it's not a breathable insulant, no apparent need for a breathable render.

    Clan Insulations do a system using BASF Neopor 'Platinum' EPS (Lamba 0.030 IIRC):

    http://www.thinjoint.com/tech-frame.html (Click on ‘finishing system’).

    The person to contact is Chris Hirst (Chris@clan.co.uk).

    And for photographs of a house done with this system, see:

    http://www.flickr.com/photos/37083475@N08/?saved=1

    Wood-fibre products are available from http://www.natural-building.co.uk/

    *Other suppliers exist, but I know some on here have had experience of Clan.

    1. Do I 'dot and dab' the insulation boards to the external brick wall?

    No, I would say. Full coverage adhesive and a few mech fixings

    2. If not, what fixings do I use?

    Lots of choice. Ask your system provider.

    3. Do I have to leave an air gap between insulation and brick? I assume NOT, as this will only increase the potential of interstitial condensation.

    No!! It's not interstitial condensation, it's getting outside air between insulation and fabric. Best way of ensuring the inulation does almost nothing!

    4. Is a french drain/floor gutter a good idea to carry any rain away from the house, and prevent it going underneath the insulation into the brick wall?

    Probably. Big thread on this forum re EWI/French drains.

    5. Please can you give examples of the wire mesh used to fix to the insulation, which will give the external render something to grab on to?

    Usually it's not wire, but a glass-fibre mesh which beds in the first render coat. Unless you usse wood-fibre and lime render, most of the renders are like 'fat paint'.

    Hope that helps.
  6.  
    Thanks Nick, I'll try and digest this today. Lots of names to look up now, thanks again!
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