You can replace just the rubber boot. Six to eight dollars at Lowe's or Home Depot. Takes about 5 minutes and you don't need to disturb the shingles. Just slip the new boot down over the pipe and you're done. Just don't fall off the roof.
Well you just had a oops moment. I was helping my husband yrs ago he told me to go up into the attic and pull the orange cord but he for got to tell me to stay on the beams can you guess what happened next.? Yep I fell thru to the floor.Good info thank you.