Make sure you need a new boot may just need a bit of bitumastic caulk if it is leaking a bit at the duct contact as they commonly do as the rubber gets older.
Replace roof vent pipe boot.
About 15 30 per boot parts depending on whether you go with the cheapest all rubber or silicone which i do not recommend except inside bathroom kitchen vent hoods or metal cone flashing with rubber boot rim longer lasting especially in heavy snow ice country and also in areas with baking sunshine.
I purchased a plastic flashing assembly from the local home improvement store.
Easy installation and no tools required.
If split then yes it needs replacing though a good wrap with waterproof duct tape or bitumastic caulk will keep it intact and dry until a roofer can fix it.
The slide the boot down the pipe and leave it about 3 above the roof.
Obtain another rubber seal.
Step 1 clean pipe and boot.
Designed for all standard roof pitches 3 12 to 12 12.
Vent pipe rubber boot repair step 1.
You will need only a few materials and they will all be available at your local home improvement store.
Now it is time to work on the roof.
A gasket less two piece pipe boot repair system designed to repair the leak around the vent pipes that penetrate the roof.
Slides over the existing roof vent boot preventing future leaks.
And begging to caulk around where the boot will go on the roof.
Place the new boot in the hole of the pipe and cut the boot on the line that touches the rim.
The best way for a do it yourselfer to repair a roof boot is to seal the existing boot and apply a new rain and repair pipe collar.
In simplest terms a new vent pipe boot flashing is slid over the top of the existing one and the top edge of the pan is lapped beneath the overlying shingle course.
There s no need to lace the flashing pan into the shingles since the boot and bell of the new flashing will shed water around the damaged part of the old one.
