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How much will it cost to re-roof a house that is covered in solar collectors?

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Posted by spaco on April 6, 2009, 1:31 am
I haven't ever seen this topic discussed on this newsgroup, so I thought
it was fair to ask this question here:

When you folks figure the payback time on your roof-covering solar PV
systems, how do you figure in the cost of reroofing every 15 or 20
years?  It seems to be that you'll just about have  a PV reinstall cost
PLUS a removal cost to add in.    And, of course, there's the down time,
I'll bet a week at LEAST, that the solar system will be down during the
process.   And, will older panels become more brittle or subject to
damage during this process?

Pete Stanaitis

Posted by Mauried on April 6, 2009, 1:54 am

Who is re roofing their houses every 15 to 20 years.
Last house I lived in was 62 years old with its original roof.
My current house is approaching 30 years with its original roof.
No plans on re roofing any time soon.

Posted by Russ in San Diego on April 6, 2009, 3:31 pm
 On Apr 5, 6:54pm, maur...@tpg.com.au (Mauried) wrote:

If you use asphalt shingles in Southern California, you generally do
have to replace the roof every 15-20 years, based on my neighbors'

We had a 16-year-old wood shake roof here in San Diego, when we were
contemplating putting in a PV system.  I had always despised that
bunch of kindling as being both ugly and a fire hazard.  So we took
the opportunity to first replace the shakes with stone-coated-steel,
in concert with my PV contractor's installation of the rack

8 years down the road, it's worked out pretty well, so far.

Posted by Cosmic on April 6, 2009, 6:07 pm
 Russ in San Diego ha scritto:

Sorry mate... you definitely should learn to build better houses over there!

re-roofing every 20 years means inappropriate materials. period.

Posted by Rick F on April 7, 2009, 4:11 pm
Unfortunately, that's the typical here in So-Cal unless you want to
over more $$.. Most people don't want to spend the big $$ on something
that's usually not seen for the most part.

Now, in our case we've got Sharp roof panels that are integrated with
the roof tiles which are made of light weight cement.  We chose to
have a torch-down material put down on the south side of the roof
where the solar stuff was to be installed to ensure the most leak-
configuration instead of just using tar paper which is a typical roof
underlayment around here.  I'm not anticipating a roof job until our
roof is at least 30 years old which is about the lifespan of the Solar
equipment anyway..

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