[RE-wrenches] to flash or not to flash

[Glenn Burt]

Jarmo, years ago Sikaflex was thought to be the best solution, unto it was discovered that according to the manufacturer it is not compatible with asphalt shingles and their petroleum based components.
Hopefully no one is still using it in that application.

Sincerely,
Glenn Burt
Sent from my 'smart' phone so please excuse grammar and typos.

-----Original Message-----
From: "Jarmo.Venalainen at schneider-electric.com" <Jarmo.Venalainen at schneider-electric.com>
Sent: ‎8/‎6/‎2015 13:34
To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
Subject: Re: [RE-wrenches] to flash or not to flash

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 








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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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