[RE-wrenches] L feet no flashing in shingle roof

[Chris Mason]

I use corrugated mounting bridges - that's the problem. If the center of
the beam falls in the trough, the corrugated bridge is useless.
I am not sure how blocking would help. Corrugated is a pain.



On Wed, Jul 4, 2012 at 12:11 PM, David Brearley <
david.brearley at solarprofessional.com> wrote:

> In some cases, you can install blocking to get up on the ridge
> consistently. One alternative to hangar bolts is to use corrugated mounting
> bridges from DPW Solar or something similar from another company.
>
> Sorry I can't link to the PDF. Google: "corrugated mounting bridges"
>
> Since exposed-fastener metal roofs already have a bunch of holes in them,
> you're not voiding the roof warranty by punching more holes in the ridge.
> (I don't think these roofs even meet the NRCA definition of a "roof
> assembly" because of the exposed penetrations.) Penetrations in the valleys
> on a roof are problematic for obvious reasons.
>
>
> On Jul 4, 2012, at 6:01 AM, Chris Mason wrote:
>
> > All of this refers to shingle roofs, which we don't see much of. We
> mostly deal with concrete and corrugated steel/galvalume, the latter being
> a nightmare. Does anyone have good ideas for dealing with corrugated?
> There's no way to flash it, the blocks are fine when you hit a beam on the
> ridge but half the time your penetration has to be on the trough of the
> corrugated steel.
> > Other than lots of goop, I don't know how else to seal it.
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-- 
Chris Mason
President, Comet Systems Ltd
www.cometenergysystems.com
Cell: 264.235.5670
Skype: netconcepts
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