Re: [GBlist] windows - seal failure

["Steven Shepard" <sbtdesigns@earthlink.net>]

In my experience silicon is not a suitable material for outdoor
installations.  It does not hold up well to sunlight and will break down
unless UV treated.

SBT Designs
25840 IH-10 West #1
Boerne, Texas 78006
210-698-7109
FAX: 210-698-7147
www.sbtdesigns.com
----- Original Message -----
From: <FUnger@aol.com>
To: <greenbuilding@crest.org>
Sent: Saturday, February 23, 2002 6:08 AM
Subject: Re: [GBlist] windows - seal failure


> All insulated glass seals will fail over time. The only question is how
much
> time. The primary cause of failure is water around the edge sealant, but
the
> other causes discussed already also come into play.
>
> The best way to prolong the life of insulated glass is as Steven
suggested,
> always set it on rubber setting blocks and  provide drainage in the sash
or
> glazing system. Also, specify "dual sealed" glass when ordering insulated
> units. These units cost a bit more but utilize a two step approach for
> sealing with silicone as a structural seal and another material like
> polysulfide as a primary moisture seal. They last longer and have better
> warranties.
>
> In windows the answer is using good manufacturers. Cheap windows use lousy
> glazing systems typically.
>
> ______________________________________________________________________
> This greenbuilding dialogue is sponsored by REPP/CREST, creator of
> Solstice http://www.crest.org, and BuildingGreen, Inc., publisher of
> Environmental Building News and GreenSpec http://www.BuildingGreen.com
> ______________________________________________________________________
>


______________________________________________________________________
This greenbuilding dialogue is sponsored by REPP/CREST, creator of
Solstice http://www.crest.org, and BuildingGreen, Inc., publisher of
Environmental Building News and GreenSpec http://www.BuildingGreen.com
______________________________________________________________________