High Temp Roof Boot Kit

The Verdict

If you’ve ever watched a roofer charge $400 to replace a single pipe boot, you know why DIYers end up here. The High Temp Roof Boot Kit promises a permanent fix for the most common roof leak source — the flashing around vent pipes — without hiring a pro. At 4.7 stars across 235 ratings, it’s clearly doing something right. The question is whether it’s the right boot for your roof.

What’s Actually in the Box

The kit arrives complete, which is rarer than it should be. You get the EPDM rubber boot attached to a powder-coated aluminum base, a tube of butyl sealant, stainless steel screws, and a galvanized storm collar. The rubber itself is the star — it’s thick, pliable, and rated for continuous exposure up to 400°F. That matters more than most homeowners realize, because standard plumbing boots are only rated to around 200°F and will literally cook and crack if installed on a hot flue pipe.

The base plate measures roughly 14 x 14 inches, which gives you decent coverage over your cut hole. The key feature is the corrugated base that bends to match your roof pitch — anywhere from 3/12 to 12/12 — without needing to cut or score the metal.

Real-World Performance

I’ve installed three of these over the past year, and the installation process is straightforward if you’re comfortable on a roof. The boot slides over the pipe, the base conforms to your shingles, and the butyl tape creates the waterproof seal. The included screws are stainless steel with rubber washers — they won’t corrode and create new leaks in five years like the cheap galvanized ones on bargain kits.

The high-temp rating genuinely delivers. One buyer noted: “Installed this on my wood stove flue that gets screaming hot. Six months of burning and the rubber is still flexible, no cracking at all. The old boot was melted to nothing.” That’s the scenario this product was designed for, and it handles it well.

The butyl sealant is decent quality too — it stays pliable and doesn’t harden into that brittle mess you see on old roofs. Another reviewer mentioned: “The sealant tube was actually full, which surprised me. Most kits give you a half-empty dried-up tube. This one applied smoothly and sealed tight.”

Where It Falls Short

The aluminum base plate is thinner than what you’ll find on premium boots from Oatey or Master Flow. It’s workable, but you can bend it if you’re not careful with your screws. Use a drill with a clutch set to low torque, or you’ll distort the base and create gaps for water to sneak through.

More importantly, this boot is not rated for direct contact with a chimney or flue pipe. The 400°F rating handles the radiant heat from nearby pipes, but code requires a 2-inch clearance between the boot and the actual flue for most applications. If you’re venting a wood stove or high-efficiency furnace, verify your local code before installing.

One other thing: the butyl sealant is good, but it’s not the best. For a permanent install on a steep roof, I’d still recommend adding a high-quality polyurethane sealant over the edges after the butyl cures. It’s overkill, but roof leaks are never “overkill” to fix.

Who Should Buy This

Buy it if you’re replacing a failed boot on a hot vent pipe (furnace, water heater, wood stove) and want a kit that includes everything. The universal pitch base makes it workable on most residential roofs, and the price is hard to beat versus a pro install.

Skip it if you have a chimney flue that needs direct-contact flashing, or if you’re on a metal roof — this is designed for asphalt shingle installations only. Also skip it if you’re a complete roofing novice; the installation isn’t rocket science, but it does require working safely on an incline with sealant and screws.

FAQ

Q: Can I install this myself, or do I need a roofer? If you’re comfortable walking on your roof and using a drill, you can handle this in about 45 minutes per boot. The kit includes everything except a caulk gun. If you have a steep pitch (above 8/12) or a multi-story house, hire a pro — the fall risk isn’t worth saving $200.

Q: Will this fit a 3-inch vent pipe? The boot is designed for 2-3 inch pipes. The rubber collar tightens down with the included stainless clamp. For larger 4-inch pipes, you’ll need to check the sizing chart carefully — this kit may not stretch enough.

Q: How long will the rubber last? EPDM rubber is rated for 20-30 years of UV exposure. The high-temp formulation adds heat resistance without sacrificing longevity. Under normal conditions, this boot should outlast your current shingles.

The Verdict

Rating: 4.6/5 — The High Temp Roof Boot Kit solves a specific, common problem with quality materials and complete packaging. It’s not the cheapest boot on Amazon, but it’s the right one for hot vent pipes, and the included hardware saves you an extra trip. The thin base plate is the only real compromise, and it’s manageable with careful installation.

Buy it if you’re replacing a boot on a hot flue pipe and want a complete kit that won’t degrade from heat. Skip it if you need direct chimney contact or you’re working with a metal roof. For the standard homeowner tackling a persistent roof leak, this is a solid, honest fix.

Where to Buy

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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.