The coolie caps are really just regular (oversized) caps which have been
punched out to snugly accommodate the pipe to be sealed. Tom Lane's book, Solar
Hot Water Systems, Lessons Learned ..., addresses this sealing method and many
more. AET Solar in Jacksonville, FL stocks this item as well as almost anything
solar thermal you could want.
One solution for exposed rubber or (more precisely) the filler bushing seal on
the combination metal / flexible insert seal Oatey style flashings is paint.
One meticulous homeowner had done that on his '80's vintage system and the
flexibility of the seal was just like new. He identified it as latex paint. I
would want to be very sure that whatever I used on that flexible material was
compatible for many many years since unlike a typical plumbing flashing which
can be relatively easily replaced by simply inserting the seal over the end of
the vent, the loop of pipe, common with SDHW does not allow that luxury.
Bill Loesch
Solar 1 - Saint Louis Solar
----- Original Message -----
From: Nik Ponzio
To: RE-wrenches
Sent: Wednesday, June 09, 2010 10:05 AM
Subject: Re: [RE-wrenches] solar hot water penetration flashing
This is an on-going problem, apparently. We were getting the coolie cap
fittings from EFI but they got out of the solar business recently.
Does anyone have a source for these now?
Thanks in advance.
--
Nicholas Ponzio
NABCEP Certified Photovoltaic Installer
Building Energy
1570 South Brownell Road
Williston, VT 05495
t: 802-859-3384 x15
f: 802-658-3982
c: 802-365-1973
www.BuildingEnergyVT.com
On Wed, Dec 10, 2008 at 9:24 PM, Karl Schwingel <k...@northwindrenewable.com>
wrote:
I use similar boots, and design the penetration so the insulation and wrap
( we use aluminum) nearly cover the whole boot by the time you're all done.
you're left with about 1/2" of boot showing all the way around.
where can I get the coolie cap style brazed copper flashings?
karl
Todd Cory wrote:
I use accordion style rubber boots. These are typically attached to the
roofing with a bead of silicone underneath and gasketed metal roofing screws on
top. These are made for all kinds of metal roof penetrations and I have even
seen them used for 6" metalbestos stove flues. One note of caution, the orange
"high temperature" ones are (I think) rated only to 180 degrees F. so you want
to make sure the SHW fluid never exceeds this. Also in time, like any rubber
flashing on a roof the rubber will deteriorate from UV. I build a show shed
over my system's plumbing which shades it so hopefully this will not be in
issue in ~20 years.
Todd
troy Harvey wrote:
Any thoughts on how to flash a copper pipe roof penetration on a metal
roof. The brazed copper flashing we typically use would cause corrosion with
the steel roof I'm afraid. WHat have others used in this situation?
Troy Harvey
---------------------
Heliocentric
801-453-9434
tahar...@heliocentric.org <mailto:tahar...@heliocentric.org>
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Karl Schwingel
NABCEP Certified Solar Thermal Installer
NorthWind Renewable Energy LLC
PO Box 723 Stevens Point, WI 54481
k...@northwindre.com
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