[Greenbuilding] [BULK] Re: [BULK] Re: VIroc

[Keith Winston]

That's interesting. Now, that problem will be partly true of any 
tightly-installed exterior foam board insulation, it seems to me. 
Chris's inspector-generated idea of drilling the back plane doesn't seem 
likely to improve things in my mind too much, if the foam is installed 
tightly against the building: it could take as long for moisture to 
migrate to a hole as through the OSB...

What about if an EIFS-like system was installed on a breathable 
sheathing (maybe Chris's swiss-cheese OSB -- hey Chris, we've got a job 
for you!), with a breathable exterior finish...

But why is this that different from SIPS, now that I think about it? 
Does the synthetic stucco breath that much less than OSB? Probably so, 
as I think about it. Is EIFS that much harder to detail correctly 
(that's hard to believe, although maybe so since you only have the foam 
to attach things to on the outside...).

Keith


Lawrence Lile wrote:
> My brother is a contractor in Seattle, his liability insurance
> specifically prohibits him from installing EIFS ("Dryvit") stucco
> systems, there's been so many lawsuits about it.  The stuff blocks all
> moisture transport, and if water ever gets in, it's the "Roach Motel" of
> building siding, it doesn't check out.  
>
>
>  
> Lawrence Lile, P.E., LEED AP
>
> -----Original Message-----
> From: greenbuilding-bounces at listserv.repp.org
> [mailto:greenbuilding-bounces at listserv.repp.org] On Behalf Of Chris
> Green
> Sent: Wednesday, December 13, 2006 11:45 PM
> To: Greenbuilding at listserv.repp.org
> Subject: [BULK] Re: [Greenbuilding] [BULK] Re: VIroc
> Importance: Low
>
> Keith Winston wrote:
>   
>> Chris: EIFS means Exterior Insulation and Finish Systems: they are 
>> used on big box stores, indeed probably the majority of large 
>> commercial jobs. 
>>     
> I had a look around and see these systems resulted in a lot of class 
> action lawsuits, especially in Georgia. I found this comment in the 
> NACHI forum archives from Sept. 2005 from Dan Bowers, a certified home 
> inspector from Mission, KS :
>   
>> We did 127 stucco or EIFS inspections in 4 months. We found 2 houses 
>> that had the EIFS, stucco or architectural details installed
>>     
> correctly.
> Source:
> http://www.nachi.org/bbsystem/viewtopic.php?p=161727
>
> The inspections were carried out mostly in the Kansas and MO area in the
>
> summer of 2005. These were houses 4 to 6 years old, I believe from 
> following the discussion. 2 properly installed EIFS systems out of 127 
> is not a good track record.  The track record for the installations is, 
> I hope, a lot better.
>
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>   

-- 
Keith Winston
Earth Sun Energy Systems
Hyattsville, MD 20781
301-980-6325
send me mail at 
keith at the company below
www.EarthSunEnergy.com