How to Replace a Bad Pipe Boot
Learn how to replace a blown out pipe boot on a shingle roof and stop leaks around a roof pipe penetration. In this roofing repair tutorial, Brian, repair manager for the Roanoke branch, walks through the full process of removing damaged shingles, exposing the old pipe boot, installing ice and water shield, setting a new universal pipe boot, and sealing everything back down correctly.
A dry-rotted or blown out pipe boot is one of the most common causes of roof leaks. This video shows how a professional roofer identifies the leak area, removes shingles without damaging the surrounding roof, replaces the pipe boot, and installs new shingles around the repair. You’ll also learn why nail placement matters, why old nail holes need to be sealed, and how ice and water shield adds extra protection around the pipe.
In this video, you’ll learn:
• How to identify a blown out or dry-rotted pipe boot
• What materials are needed for a pipe boot replacement
• How to remove shingles around a pipe boot
• Why roof shingles may not match perfectly during repairs
• How to create proper shingle bond spacing
• Why shingles under the pipe boot should be replaced
• How to install ice and water shield around a roof pipe
• How to install a universal pipe boot
• Where to place fasteners on a pipe boot
• How to cut shingles around the new pipe boot
• Why nail placement matters near flashing
• How to seal old nail holes and loose shingle tabs
• How caulking helps prevent wind damage after a repair
This video is helpful for roofing contractors, roof repair technicians, roofing apprentices, homeowners, and DIYers who want to understand how pipe boot replacement works and how roofers repair leaks around plumbing vent pipes.
Chapters:
0:00 Intro: replacing pipe boots
0:11 Materials needed for pipe boot replacement
0:17 Identifying a dry-rotted, blown out pipe boot
0:23 Removing shingles around the pipe boot
0:35 Breaking the shingle seal
1:21 Why resealing shingles matters after breaking the seal
1:37 Removing damaged shingles
2:05 Keeping nails organized during roof repair
2:15 Why replacement shingles may not match perfectly
2:44 Creating new shingle bonds with architectural shingles
3:50 Maintaining proper 6-inch bond spacing
4:23 Exposing and removing the old pipe boot
4:40 Why to replace shingles underneath the pipe boot
4:57 Spotting signs of water intrusion
5:14 Installing ice and water shield
5:57 Cutting ice and water shield tight around the pipe
6:42 Trimming ice and water shield below the exposure
6:52 Installing the new universal pipe boot
7:34 Fastening the front of the pipe boot
7:48 Adding a second layer of ice and water shield
8:44 Installing replacement shingles
9:13 Cutting shingles around the pipe boot
9:55 Lining shingles back up with exposure marks
10:03 Proper nail placement around pipe flashing
11:38 Sliding shingles back into place
11:44 Nailing replacement shingles
12:29 Why nails must be removed from the shingle above
12:58 Avoid reusing old nail holes
13:18 Sealing old nail holes and shingle tabs
14:17 Sealing exposed nails
14:31 Final result: pipe boot leak repaired
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