[RE-wrenches] to flash or not to flash

Thu Aug 6 10:50:10 PDT 2015

I'm with Jason. Even though for years we installed without flashing, we
now use it on every job. It is code and besides, why take the chance? We
use Snap N Rack flashing very successfully in Maine, where snow, ice, rain
and large heat/cold expansion/contractions make flashing a great
insurance. On really shallow roofs we use Eterna-Bond (dual side adhesion,
3 inch tape) under the flashing.

Daryl

> Hi:
>
> People may already know about this, but I thought I would pass it on in
> case some dont.
>
> We do a lot of work with the boating and RV industry in the US and
> overseas.
>
> One sealant name which has come up a lot with strong positive reviews
> regarding age related drying/shrinking not only in the US but overseas as
> well is SIKA.
>
> Here's a link to their website,
>
> http://usa.sika.com/
>
> JARMO
> _____________________________________________________________________________________
>
>
> Jarmo Venalainen  |   Schneider Electric   |  Xantrex Brand  |   CANADA  |
>   Sales Application Engineer
> Phone: +604-422-2528  |   Tech Support: 800-670-0707  |   Mobile:
> +604-505-0291
> Email: jarmo.venalainen at schneider-electric.com  |   Site: www.Xantrex.com
> |   Address: 3700 Gilmore Way, Burnaby, BC V5G4M1
>
>
>
>
>
>
>
>
> *** Please consider the environment before printing this e-mail
>
>
>
>
> From:
> "Matt Partymiller" <matt at solar-energy-solutions.com>
> To:
> "RE-wrenches" <re-wrenches at lists.re-wrenches.org>,
> Date:
> 08/06/2015 10:16 AM
> Subject:
> Re: [RE-wrenches] to flash or not to flash
> Sent by:
> "RE-wrenches" <re-wrenches-bounces at lists.re-wrenches.org>
>
>
>
> Daniel,
>
> My answer is to flash until others prove me wrong.
>
> I am in the same position you are, speaking to the same manufacturers you
> are, and probably dealing with the same low competitor pricing you are.
> These products sure sound tempting.
>
> Over the past decade I have probably removed a dozen 80's era hot air or
> hot water systems that were directly attached to roofs (installed by
> others).  In every instance the roof was a complete mess and required deck
> replacement.  I now tell homeowners just to contact a roofer and have them
> dispose of the collectors in the process of re-roofing - we will come out
> after the new roof is in place.
>
> I think you summed up the sealant problem quite well.  I sell my systems
> as a 25 year product.  I am not satisfied that butyl is a 25 year answer.
> Until someone convinces me otherwise, I will relate as much to my
> customers and proceed with proper flashings.
>
> Good poll.
>
> Matt
>
>
> Matthew Partymiller
> Solar Energy Solutions LLC
> (877) 312-7456
> matt at solar-energy-solutions.com
>
>
> On Thu, August 6, 2015 12:47 pm, Daniel Young wrote:
>> Writing the subject above, it seems like I've heard this question on the
>> wrench list before, but I could not find it in my old email archives.
> Feel
>>  free to pint me back to the old discussion if it's there.
>>
>>
>>
>> I've been using a flashing based roof attachment for 8+yrs now (quick
>> mount or similar). Now we are looking at Rail-less systems  (quick rack
> is
>> a good example). There is also a non-flashed rail-less racking from
>> roof-tech http://roof-tech.us/ . I've always been of the opinion that
>> simply crushing some sealant/gasket onto an asphalt shingle work fine at
>> first (the test data from roof-tech is impressive), but would be an
> issue
>> 10+yrs down the
>> road (thermal expansion movement, freeze/thaw, etc). I can make a good
>> waterproof seal at first by just slathering some butyl/silicone to an
>> L-foot
>> and cranking it down on the shingles, but that practice really
> disappeared
>>  8+yrs ago.
>>
>>
>>
>>
>> Maybe consider this a Poll: (to flash, or not to flash)
>>
>>
>>
>>
>> With Regards,
>>
>>
>>
>>
>> Daniel Young,
>>
>>
>> NABCEP Certified PV Installation ProfessionalTM: Cert #031508-90
>>
>>
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