HI Todd;
That's very interesting. What roof pitch does that happen? I'm
guessing that at a step enough tilt, the frame damage is alleviated?
Also on your tall pole mounts what pole design do you use? I've tried
telescoping type, and guy wires on tall poles.
Ray
On 11/13/2012 12:08 PM, toddc...@finestplanet.com wrote:
I have never had good results with roof mounted pv in our heavy (mount
shasta) snow area. the snow tends to creep down the glass and peel the
bottom of the frame off the module... and then the glass breaks as it
has no support in that area.
so, around here... i do pole mounts.... WAY up in the air.
todd
On Tuesday, November 13, 2012 8:04am, "Troy Harvey"
<tahar...@heliocentric.org> said:
Hi all,
We have been doing PV installs for years with L-feet and silicone
without problems ever. Even still, gravity flashings seem attractive
in shingle roofs, to provide a second level of security, and a more
professional install (at least in perception). But the cost of these
systems in significant in high snow load areas where we often have
L-feet every 2 feet on center, to evenly load the structure below. In
todays costs, the feet could cost as much as 33% of the panel value.
I'm wondering what other people are doing in high snow load areas?
Also. I have noticed that there is a flip side to the risks. We have
found that unless you have good quality shingles, on a preexisting
roof, that sometimes the adhesive sticking the shingles together is
stronger than the low quality shingles themselves - adding risk of
trying to shoe horn flashing in after the fact. Your experience?
thanks,
Troy Harvey
---------------------
Principal Engineer
Heliocentric
801-453-9434
tahar...@heliocentric.org <mailto:tahar...@heliocentric.org>
Sent from Finest Planet WebMail.
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