[RE-wrenches] to flash or not to flash

[Tump]

As NABCEP certified installers, the signed agreement states that; we as "Pros" will use the IBC and other applicable codes for design & installation methods. I will say that I loose jobs due to the additional cost of components & labor to install flashings. It is very frustrating having my local competition continue to squirt the L foot n go......
Our society, despite long winded explanations to a potential client the benefits of flashing, still are driven by the short term $$$$ savings despite the long term liability & cost of roof replacements.
The other advantage of flashing is the improved long term output w/ the additional air circulation under the modules.   Flash or walk!    I sleep better when the ol noreaster comes a howeling. 
On Aug 6, 2015, at 2:05 PM, Jason Szumlanski wrote:

> If we are talking code, we should also point out how people are "getting away" without using flashings and why AHJs are not requiring them. What I have seen is that a fastener is not considered a "penetration." The argument used frequently is that the thousands of screws that attach an exposed fastener metal roof are not "flashed." The argument goes that the codes sections cited be Andrew are intended for large openings like roof vents and plumbing vents. If the screw occupies the space of the "penetration" and is further sealed with sealant or a gasket, there is no flashing required. You could extend this argument to shingle nails that go through the "roof plane" depending on how you define it.
> 
> Don't kill the messenger - I'm just pointing out the logic/argument made against the requirement for flashings.
> 
> I'll reiterate that my vote is to flash!
> 
> Jason
> 
> 
> On Thu, Aug 6, 2015 at 1:04 PM, Andrew Truitt <atruitt at gmail.com> wrote:
> 
> Flash!  It provides a better, longer-lasting seal, and its a Code requirement in most jurisdictions.  From the IBC via the Quickmount PV website:
> 
> <image.png>
> 
> If one chooses to attach a footing directly to the roof without an integrated flashing then an "insurance option" is to install an 8" step-flashing under the shingle course above the penetration.  This works better for railed systems than railless since the whole footing assembly can be covered by the modules.
> 
> 
> 
> For a brighter energy future,
> 
> 
> Andrew Truitt 
> 
> Principal
> Truitt Renewable Energy Consulting, LLC
> 
> (202) 486-7507
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> LinkedIn Profile
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> Company Website
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> NABCEP Certified PV Installation Professional ID: 032407-66
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> Colorado Journeyman Electrician License No.: 600132
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> 
> 
> 
> 
> 
> 
> 
> On Thu, Aug 6, 2015 at 10:47 AM, Daniel Young <dyoung at dovetailsolar.com> 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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