Ive seen this topic discussed a couple times but not found a for sure answer. Does a Pergola require any clearances to overhead services? I think it comes down to if you consider the top a pergola a "roof". Personally I don't think should be considered a roof and therefore would not require any...

I have a job where the customer wants a bath exhaust fan installed. On the phone I told him "no problem, I can mount the exhaust on the roof. Yeah right! The roof and gable ends of the home have slate as the roofing and siding methods. Victorian style. I need to punch through somewhere, with...