The small roofing upgrade that protects big investments

By Jesse Sanchez.

This simple, often-missed roof feature plays a powerful role in preventing leaks and can boost savings.

When it comes to roofing systems, most people focus on shingles, flashing or gutters. Few give a second thought to the small, often-invisible components guarding vulnerable spots — such as pipe collars from Wil-Mar Products, but experts say ignoring them could cost homeowners thousands.

Pipe collars, also known as vent pipe boots or flashing collars, are installed where plumbing vent pipes penetrate the roof. Their main function is deceptively simple: seal the gap between the pipe and the roofing material to keep water out. That basic role is essential to the overall task of preventing interior leaks and protecting the structural integrity of the building.

Pipe collars are a common source of leaks that are often misidentified as general roof failure. Routine inspection and timely replacement of deteriorated collars can significantly reduce water damage.

Typically made of a combination of metal flashing and a rubber boot, pipe collars are vulnerable to deterioration over time. Harsh sunlight, temperature changes and wind-driven rain can degrade the material, causing cracks or dislodgement. The result? A leak path straight into your attic or wall cavities — often unnoticed until major damage is done.

Most home and building owners rarely consider pipe collars until a problem appears. By the time a ceiling stain becomes visible, the damage is often already done — likely caused by a collar that’s been failing for weeks or even months without notice.

Even brand-new roofs aren’t immune. If a collar is poorly installed, think loose nails, off-center placement or improperly integrated flashing, it won’t perform its job, no matter how high-quality the surrounding shingles are. That's why some contractors stress using better materials upfront and checking pipe collars during every inspection.

For building owners and facility managers, the takeaway is clear: don’t skip the small stuff. Including pipe collars in your inspection checklist and addressing any wear early could save you from extensive repairs later.

Learn more about how to spot pipe collar issues and what the best repair practices are, with professional tips and industry insights!