Decra Roofing [RE-wrenches]

[Jerry Caldwell]

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Matt, Mo, and Owen,

For what it's worth, I've never had an inspector ask
us to ground a roof.  It has crossed my mind, but so
far we've been lucky in that regard.

To avoid denting the metal tiles you have to step at
the bottom edge of the course of tiles where the 2x2
firring strips are.  You might want to bid in a little
extra time for having to walk carefully on the roof.  

I don't like these types of roofs - I think they look
like crap, but they are doable from an installer's
standpoint.

cheers,
Jerry

--- Matt Tritt <solarone at charter.net> wrote:

> 
> Mo and Owen,
> 
> I completely agree with Owen about this type of
> roof.  All it takes
> is one mis-step and
> Boink! You have a dented roof, which requires tons
> of labor to replace.
> Also, finding rafters is close to impossible if
> you're going through an
> existing roof under a roof.  
> 
> We do Unisolar systems (metal roofing) which always
> requires a grounded
> roof, at least the sections with PV attached. With
> standing seam it's
> not that difficult, plus it's all under cover so it
> doesn't look bad.
> With this interlocking stuff with aggregate surface,
> how do you achieve
> a secure ground? Hmmm?


=====
Jerry Caldwell
NABCEP certified PV practitioner
Light Energy Systems
510-205-2798


	
		
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