vent pipe's and sealing

[astegall1978]

Hey I have a question, I am getting ready to koolseal my roof and I cleaned it today. I have some leaks from the vent pipe's I think, so i looked at it more indepth today and I didnt know what i needed to do it them to stop it. Do I just clean it and retar around it or is there a seal or anything else i needed to do to it.

Thanks so much,
Allen

[Greg]

If you are using Koolseal, tar based sealers do not mix well with it. Check the can or web site for their recommendations. Greg

[astegall1978]

The pipe says to use there patchin kits but no one around here sales that, They all tell me to use the are calking. I put some on it back in jan. and its already done cracked.

[JD]

Often on metal roofs. there is no support under the roof metal where the plumbing vent pipe goes through it. You can usually see this movement as you approach the vent while walking on the roof. you can cut this pipe at 1 1/3" and install a cap like in the picture.

Hopefully you aren't working with an asphalt sealant, the old stuff or the repair. If there is a large build up of sealants around the vent, this should probably be removed.