Roof Pipe Boots: Why They Leak and What It Costs to Fix
The rubber collar around a plumbing vent is often the first part of a roof to fail. Here is how to spot a bad pipe boot, what a repair costs and which replacement to choose.
What it is
What a roof pipe boot does
A pipe boot, or vent boot, is the flashing that seals around a plumbing vent pipe where it comes through the roof. Most are a metal or plastic base with a rubber collar that hugs the pipe.
The rubber is the weak point. Years of sun dry it out until it cracks, and water runs down the pipe into the attic. A failed boot is one of the most common causes of a small roof leak.
Stain under a vent pipe?
We will check the boot and the flashing and fix the leak.
Standard rubber collar boot. The common, low-cost choice. Expect the collar to need attention long before the shingles around it.
Metal or lead boot. A metal or lead sleeve that is dressed over the top of the pipe. No rubber to crack. More costly to fit.
Retrofit collar or boot cover. A replacement rubber collar or cover fitted over a cracked boot, without removing shingles. A quick repair rather than a long-term fix.
Caulk. Sealant on a cracked boot buys a season at most. We do not treat it as a repair.
We get on the roof, photograph what is actually there, and hand you a written report with a price. No charge, and no obligation to book the work with us. If the roof has years left in it, that is what the report will say.
