[RE-wrenches] How many times can a rafter have a lag screw put in and out before it is no longer structurally sound? Some roofs getting their 3rd set of new shingles

[scot.arey at solarcentex.com]

With all our Texas hail storms, we now have roof solar systems that might
have to come down for the third time as hail-pockmarked shingles need
replacement. We're at the 11-year mark of doing business and we have some
customers ready for another insurance roof claim,

 

So that means a new set of lag screws drilled into rafters.after how many
times is that 2x6 rafter not 2x6 strength?

I've asked this to my 3rd party structural engineer and instead of an answer
got a "wow, hadn't thought of that." We've considered going to deck mounts
to avoid rafters at the 3rd "detach and reset."

Any of you guys consider this and have your techniques? I suppose in perfect
world, the mount would stay in place and roofer would shingle around it but
we still use old-school metal flashing so that is really not possible. I
look forward to hearing your thoughts on this.

 



 

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