[Greenbuilding] Exterior insulation retrofit

Lawrence Lile LLile at projsolco.com
Tue May 17 08:11:05 PDT 2011

You don't have to use stucco, either.  An exterior layer of foam can go under essentially any type of siding. I am not a fan of EIFS, because it traps moisture in the wrong places if not done right.
--Lawrence Lile, 

> -----Original Message-----
> From: greenbuilding-bounces at lists.bioenergylists.org [mailto:greenbuilding-
> bounces at lists.bioenergylists.org] On Behalf Of John Straube
> Sent: Tuesday, May 17, 2011 8:42 AM
> To: Green Building
> Subject: Re: [Greenbuilding] Exterior insulation retrofit
> Being done all the time in North America.  Although this really only got common in
> the last decade.  I expect to see a lot more.
> The problem is, you have to like the look of stucco, which is not always what is
> wanted, and the impact resistance of EIFS leaves lots to be desired.
> On 2011-05-17, at 9:27 AM, Norman Feldman wrote:
> > In April I heard an architect describe how they're using EIFS insulation in
> Germany and Austria to insulate existing buildings from the exterior. They apply
> EIFS panels to the outside of the building while tenants are in the building then,
> once the insulation is done, bring the windows out. I will forward more about this
> offlist if anyone wants.
> >
> > http://en.wikipedia.org/wiki/Exterior_Insulation_Finishing_System
> >
> >
> Dr John Straube, P.Eng.
> Associate Professor
> University of Waterloo
> Dept of Civil Eng. & School of Architecture
> www.buildingscience.com
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