[quote=“mweeks”]I am having my roof replaced and I have received conflicting information from various roofers regarding the plumbing boots.
One contractor said that lead boots will last a lifetime and are a free “upgrade”, while the another said that I don’t need lead boots since my pipes are PVC. Which one is correct? Would lead boots with PCV pipes cause a problem?
I’m going to assume we are talking about a shingle roof here?
Anyway, to answer your question, lead boots will not cause a problem with your PVC pipes. However, the lead may get chewed up by squirrels. All the same, the lead is better than the pre-formed aluminum or plastic flashings that utilize a neoprene collar that is susceptible to degradation from prolonged exposure to solar radiation. In other words, the rubber boots will dry rot and crack around the pipe, and will eventually leak. With lead you just need to keep the squirrels away. Which means the best option is copper, but that is costly.
If you go with the lead, make sure to ask the contractor to install it as a two-piece flashing, this will allow the pipe and roof deck to move independently of one another without damaging the flashing. Also, make sure he is giving you code lead, not the then crap that so many contractor use because it is cheap. Generally, we are talking 4# lead for soil stack and roof drain flashings.