Iam not trying to prolong this thread,but I do want to say that there
should be an inspectionof the blocks in freeze/thaw areas. We started an
inspection program of our systems or systems in the area and although we
don't install ballasted systems, we found enough other things to
address. On my own 8 year old system zip tie failure was over 50%. It
opened my eyes to the need to do these inspections, and spec better
materials at the start.
I remember the survey in Wisconsin regarding the inspecting of fairly
old solar thermal systems. All the participants really seemed to love
their systems, but I think over 3/4 of them were not working.
On 7/1/2018 8:02 PM, Jerry Shafer wrote:
Kirt, Chris, Wrenches
We have not had any issues other then one or two in Hawaii or
California, it might be the location, concrete blocks sitting in the
weather all exposed to rain from on all sides and then potential
freezing conditions will cause failure of the blocks, the same issue
pools will get if there are tiles around the edge when they pop off in
freezing conditions but thats just me>
Jerry
NABCEP Installer and PVI
On Wed, Jun 27, 2018 at 10:20 AM, Kirk Herander <[email protected]
<mailto:[email protected]>> wrote:
All,
I have a 6 year old ballasted roof system in which about 50% of
the solid cap blocks(16”L x 8”w x 4”D) are cracked and crumbing,
some are close to rubble. I assume it was a bad batch, but has
anyone seen this before? What might be the preventive remedy in
the future? A coating of some sort?
*Kirk Herander*
*Owner|Principal, VT Solar, LLC *
*/Celebrating our 27^th Anniversary 1991-2018/*
*www.vermontsolarnow.com <http://www.vermontsolarnow.com>*
dba Vermont Solar Engineering
NABCEP^TM 2003 Inaugural Certificant
VT RE Incentive Program Partner
802.863.1202
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