Aloha, We use GeoCell 4500 (Black) daily for years with no problems here in Hawaii ($4.99 a tube). I have also heard that black zips or sealant holds up better in the UV light, and my field experience seems to validate this.
On Tue, Aug 11, 2015 at 5:09 PM, Ray Walters <r...@solarray.com> wrote: > I've used Lexel before, it's the best clear caulk I've used. I used it > even to repair cracks on plastic lens on concentrating modules. It holds > its clarity for a long time, however I don't know if its approved for > asphalt shingles. > > R.Ray Walters > CTO, Solarray, Inc > Nabcep Certified PV Installer, > Licensed Master Electrician > Solar Design Engineer303 505-8760 > > On 8/11/2015 12:01 PM, Kevin Pegg wrote: > > At recommendation from a roofer couple years ago, we have been using this > product: > http://www.sashco.com/products/lexel/ > > Not used long enough to know if it stands the test of time. > > Kevin > > -----Original Message----- > *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org > <re-wrenches-boun...@lists.re-wrenches.org>]*On Behalf Of *August Goers > *Sent:* August 10, 2015 2:53 PM > *To:* RE-wrenches > *Subject:* [RE-wrenches] clear sealant recommendations > > Hi Wrenches, > > > > For the most part we are using Chemlink M1 sealant for to seal our rooftop > penetrations. It hasn’t let us down yet. > > > > M1 is a available in several opaque colors and grey is the most common. > Sometimes we want a good quality clear sealant to put around conduit > fittings, where our conduit enters buildings, etc. We used Geocell 2300 in > the past and I don’t have anything bad to say to it but our current > supplier doesn’t carry Geocell products. More recently we’ve tried Chemlink > Clear sealant but I’ve already seen signs that it doesn’t hold up well in > the elements – it seems to peel off the surface it was installed on and > turn brown relatively fast. > > > > Does anyone have a good multipurpose clear sealant that they like? > > > > Best, > > > > August > > > > > > > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & > settings:http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette:www.re-wrenches.org/etiquette.htm > > Check out or update participant bios:www.members.re-wrenches.org > > > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > -- *James B. Rudolph* *Haleakala Solar* *Director of Construction* *NABCEP Certified PV Installer # 091209-155*
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