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Roof, replace plumbing vnt stack boots question

edwardh1's picture

My adult son has a 8 year old home and the pvc vent pipe penetrations in the roof leak around the pipe where it goes through the boot.

Is there a cure for this (like sliding another boot over the present one or is it normal to replace the whole roof "jack"- which is a lot more work for an only 8 year old house.
house is 2 story on a high foundation so he can not do it himself, but wants to know what the usual repair method is.
thanks.
Asphalt shingle, upstate South Carolina area

Ed, my home is approximately (post #182031, reply #1 of 7)

Ed, my home is approximately 9 years old and in Northeast Georgia. Its a tract home and the builder used neoprene utility boots. While getting quotes for a new roof last month, several roofers said they could replace the boot sets for about $300 for the same style (neoprene) boot. A couple of them offered to use lead.

His house has 5 vents (post #182031, reply #2 of 7)

His house has 5 vents estimates are $500, and $600. one guy said it would take 3 people all day

a deteriorated flexible ring (post #182031, reply #3 of 7)

a deteriorated flexible ring that seals the flashing to the pipe may be the cause of the leak.

If this is the case, slipping a new "cap" overtop the existing will work. I believe Oatey makes a rain collar that will accomplish the repair, if not then buy a vent flashing at the local store and cut the flat roof flashing off and slip the "cone" with the flexible seal over the pipe.

If the flashing is shot then the whole "boot" will need to be replaced which entails manipulating the shingles enough to remove and replace the flashing.

http://hardware.hardwarestore.com/27-104-pipe-flashings.aspx?page=2&sortBy=

Edward: Those pipe boots have (post #182031, reply #4 of 7)

Edward:

Those pipe boots have about a 10 year lifetime - more or less probably depending on temperature and sun exposure. They always seem to fail by splitting where the pipe goes through leading me to wonder if this is caused by perhaps the one size fits most boots they sell these days really not holding up when streached around a larger pipe.

We have (had?) a few good, full time roofers around here - maybe one of them can shed some more light on it.

Matt

5 years in FL. It takes less (post #182031, reply #5 of 7)

5 years in FL. It takes less than an hour to replace the boots on a walkable roof. Per boot. I would say $100 per boot would be an okay price.
Some places have trouble with squirrels eating lead boots. But they are the best to use.
Why put a 5 year product on a 20 or 30 year roof? money plastic boots are 1/3 the price.

Squirrels chewed mine to (post #182031, reply #6 of 7)

Squirrels chewed mine to pieces. My roofer charged me $600.00 to do 7 vents with new lead boots.

Florida Licensed Building Contractor, 40 years experience in commercial remodeling, new homes, home remodeling and repairs and all types building maintenance.

We use lead boots and paint (post #182031, reply #7 of 7)

We use lead boots and paint them black so the rodents leave them alone. Don't know why it works.

KK