Flashing only On Apr 11, 2014 9:20 AM, "Troy Harvey" <tahar...@heliocentric.org> wrote:
> 1. I'm interest in a poll of installers who are using flashings vs > sealant. Now that the flashing market has evolved, what are you using > today? When did you switch to flashings (if you did). And why not, if you > still prefer sealant. > > 2. Is there a any code defense for sealant systems ? (L-foot sealed down > to shingles). Does anyone know of a scientific shootout between sealants > and flashings? > > Here is my view: The construction industry is slow to evolve. Sealants, > clauks & adhesives are not trusted in general, due to the legacy of code, > and we have a mechanical vs. chemical industry bias. > > There is something about seeing a flashing that says, that is a > "professional job", it must comply with code. And yet, my experience says > I'd trust a 50-year silicone over a flashing that depends on gravity. > Gravity should be dependable right? But anyone in snow country can tell you > in spring, water can go uphill after ice dams form. There are high-rise > buildings that use "structural glazing" which is just glass and silicone. > These systems are now getting to be 50 years old without issue. > > The cost of flashings have come down in the last few years, but so has the > cost per watt of installs. With 50 feet in a typical install around here > that is $150 in feet, lags & silicone. Or $1500 in flashings, and extra > labor. That can be a large part of a bid, and make you more expensive in a > competitive landscape. That is fine, if it adds value... but I personally > don't see the *proven* value, other than the "appearance" of code > defensibility. Anybody have proof? > > thanks, > > Troy Harvey > --------------------- > Principal Engineer > Heliocentric > 801-453-9434 > tahar...@heliocentric.org > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Change email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > >
_______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Change email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
