[Greenbuilding] Thin High R-value insulation for exterior

[josephbecker at riseup.net]

I like the idea.  I am planning a similar assembly using 3" of a stiff
Rock Wool product (Rock Board 80) over Faswall. It is not stiffer then EPS
however I am only planning a 1/2 lime stucco over it and I want to
maintain a permeable wall system and avoid using foam.

Any thoughts or ideas would be helpful

Best Energy,

Joseph Becker
www.IONecobuilding.org
www.HomeEmpowerment.org
360 534 4717


> Hi Mike:
>
> They use screws at various points in the wall now to do this.  None
> wants to install a brick ledge, saying it won't work well for the stone.
>
> Thanks!
>
> Lynelle
>
> On 30/10/2010 09:41, Michael O'Brien wrote:
>> Hi, Lynelle--
>>
>> Hmmm...a brick veneer would normally sit on a ledge, like a metal
>> bracket, attached to the structure. Is there some way the stone could be
>> supported like that?
>>
>> Best,
>>
>> Mike O'Brien
>>
>> On Oct 30, 2010, at 6:28 AM, Lynelle Hamilton wrote:
>>
>>> Hi All:
>>>
>>> Again, I turn to this list for advice.
>>>
>>> My house is durisol block, but I want to add 12-15R insulation to the
>>> exterior, in part to reduce heat loss from the webs of the block, and
>>> partially because I want R40-R43 walls.
>>>
>>> I have reclaimed 3" SM Board (blue EPS)  to put on the outside of the
>>> durisol.
>>>
>>> The facing is manufactured stone.  I have had 3 masons look at the
>>> property.  One mason says no problem attaching the stone to the durisol
>>> through the 3" EPS, the other two say well.,....can't you find
>>> something else?   They point to the possibility that the screws needed
>>> will bend in the EPS, allowing the block to sag.
>>>
>>> Both say spray on closed cell insulation provides too uneven a surface
>>> to attach lath and stone.
>>>
>>> So, has anyone done what I'm doing? What was the result? Alternately,
>>> does anyone know of anything with grater rigidity than the EPS, perhaps
>>> with higher R-value per inch, that would work?
>>>
>>> Please don't point me to the engineer....he says this is out of his
>>> scope.
>>>
>>> Many, many thanks!
>>>
>>> Lynelle
>>> --
>>> Effective immediately, please use the following e-mail address to reach
>>> me: lynelle at lahamilton.com
>>>
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>>
>
> --
> Effective immediately, please use the following e-mail address to reach
> me: lynelle at lahamilton.com
>
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