01:30PM | 04/18/02
Member Since: 04/17/02
1 lifetime posts

I am going to mount a PV Solar Power system on my roof. I wanted to know what the best way to find the stud/beam locations from on top of the roof to bolt into.

I alsoplanned on using some type of sealant at each hole - what would you recommend?

Thanks for any advice!!


04:59AM | 04/25/02
Member Since: 03/13/00
1675 lifetime posts
Assuming you can get to it from beneath in the attic - just find the place where you intend to locate the system, measure 1/2 way between 2 joists, and drill a small hole at that point. Then stick something through the hole so you can find it from above (like a piece of wire). Now you know where the joists are from above: 8" (or whatever distance) from the hole in both directions.


09:52AM | 04/29/02
Member Since: 02/25/02
14 lifetime posts
If you have a shingled roof you can lightly beat on the roof and easily find the rafters without causing damange to the shingle. We so this when attaching roof jacks on a steep roof or cutting vent holes.


09:53AM | 04/29/02
Member Since: 02/25/02
14 lifetime posts
on the seleant, we use geo-seal but I dont think they sell it at home depot, we get it from the shingle wholeseller.

Use something that is 100% cilicone



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