[Greenbuilding] exterior wall

[Tim Vireo Keating]

Too bad about the cedar.

tim

At 11:04 AM -0400 5/27/08, Stephen Collette wrote:
>Lynelle,
>
>I like Durisol, it's a fun product to work with. I might suggest what 
>was used on a building I worked on up near Thornbury, ON (Collingwood 
>area for local Ontario people). The durisol was the exterior type with 
>the roxull on the outside and this was on the lake facing north, so 
>getting a fair bit of wind and abuse. We put two coats of portland 
>cement on the outside of the structure with a spray gun that was heaps 
>of fun. It was trowelled relatively smooth but not too much. They put 
>on a rain screen all the way around it of cedar (if I remember 
>correctly) so that the water would not directly hit the wall, and the 
>spacing was big enough to allow any that did get through to fall out. 
>I haven't been back to see the final job, but I am good friends with 
>the owner, and the architect as well, so I could find out more for you.
>
>Stephen
>
>Stephen Collette BBEC, LEED AP
>Principal
>Your Healthy House - Indoor Environmental Testing & Building Consulting
>www.yourhealthyhouse.ca
>stephen at yourhealthyhouse.ca
>705.652.5159
>>
>>
>>  From: Lynelle Hamilton <lynelle at ca.inter.net>
>>  Subject: [Greenbuilding] Exterior wall construction--Again!!
>>
>>  I'm building on waterfront and am looking for the exterior wall
>>  "assembly", if you will. When John spoke of the 'wetness' of the 
>>  PNW.  I
>>  suspect I'll be similar.
>>
>>  The wall core is as follows:  Durasol or Concrete block (if block,
>>  cavities filled with insulating material)  cladded with foam on outer
>>  wall, then...what??  A friend, who developed a type of ICF, says 
>>  just to
>>  put fiberglass mesh over the exterior foam and then stucco, that the
>>  foam is the vapour barrier.  I don't know about stucco at the
>>  waterfront, and  have toyed with the idea of cement fibre panels.  
>>  Stone
>>  (other than the "artificial" stuff) is not a possibility, except
>>  possibly for a partial wall.
>>
>>  FWIW, slab is poured concrete, insulated as much as I can.
>>
>>  With cement fibre panels come the need to somehow attach them (through
>>  foam).  From all the discussion on this site, I now have no idea if
>>  these panels are OK and if it good or not to try to attach through the
>>  foam.  Also, what depth of foam do I need to attain R40 or better in 
>>  the
>>  wall?
>>
>>  Any ideas or suggestions as to where to research?  I'm building pretty
>>  much on my own (as is obvious from my questions)!
>>
>>  Thanks
>>
>>  Lynelle
>
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