New Construction/Standoff/LowProfile Flashing [RE-wrenches]

[Kurt Albershardt]

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--On Friday, June 04, 2004 11:20 AM -0400 Jeff Clearwater <clrwater at earthlink.net> wrote:
>
> On this particular install they are using pre-made trusses that have only 2x4" rafters. The prosolar jacks have only one bolt hole as William pointed out and I've always used the rule to not have the lags go in more than half way into the rafter (weakens rafter's tensile strength fibers on bottom half of rafter).  So I usually use two lags per standoff to get the thread depth required for uplift (and hence use Unisolar standoffs)

ProSolar also makes a commercial standoff with two bolt holes.


BTW, how do the standoffs/flashings work out with metal roofs?  Standing seam are straightforward enough, but with corrugated I've seen different roofers use different tricks to flash around vent pipes, etc.

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