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Replacing and Sealing Roofing Vents

Last Updated on: May 8, 2026
Roof vents fail when sealant degrades from heat, hail, or age. Minor leaks can be fixed with lap sealant or polyurethane sealant applied to exterior areas. But if the vent is worn, rusty, or cracked, full replacement is the better long-term fix. Driftwood Builders Roofing always installs new metal pipe jacks and air vents — never reused or plastic ones. Call (512) 894-0129 for a free vent inspection.

Have you discovered signs of roof leaks? There are many reasons leaks can pop up, and not all of those reasons have to do with the shingles. For example, a roof can develop air leaks if sealants fail or deteriorate over time. Because of that, the solution to your roof leaks may be that your roofing vents need replacing or sealing. We’re discussing that more in this blog post.

What to Know about Replacing and Sealing Roofing Vents

What to Know about Replacing and Sealing Roofing Vents

A roof will not last forever. And like any part of a home, your roof will need its own type of maintenance, repairs, and eventually replacement. Roofing vents are one type of roofing component that can fail and for a variety of reasons like the sealant pulling away due to excessive or prolonged heat, hail, or shrinkage from age.

How to Replace a Roof Vent Cap

If a roof vent becomes worn, rusty, or otherwise damaged, replacing the vent is a good option. Nails, shingles, and the old vent will need to be removed. The current shingles will need to be cut and adjusted if the opening is too small. And a new vent will need to be fitted under the current shingles with correct alignment to avoid water buildup. Then your roof vent should be nailed in place and properly sealed while repairing any prior shingle holes as well.

How Do You Seal a Roof Vent?

Sealing a roof vent is a common repair for a home’s roof. Appropriate sealants or a rubber vent cover can protect your vent install locations and seal the vents. They should be properly installed so water doesn’t accumulate around the vent or under the shingles.

Can You Seal Roof Vent from Inside?

A roof vent repair or reseal can really only be done from the outside. A roof vent that is leaking needs to be assessed for problems. The shingles will likely require adjustments and any sealant needed will be applied to specific areas that are located outside. Attempting a repair or replacement from inside your attic will likely lead to disappointment.

What Do You Use to Seal a Vent Cap or Vent Pipe on a Roof?

There are a number of things that can be implemented to seal a roof vent or pipe on a home. Depending on the location and type of vent in use will determine the type of sealant that will be used. There are a couple of options that are designed for roofs – a lap sealant or durable polyurethane sealant. Both are designed to withstand the weather and resist cracking and fading from heat or sun exposure.

Your Local Austin TX Roofing Professionals

We strive to bring you the best in roofing in the Austin, Texas area. We have decades of roofing experience, training, and knowledge in this area’s needs. We are a prominent roofing company in residential roof repair and roof replacement. We will not ask for a deposit on labor or materials as a dependable way to stand out from the competition while bringing you the best product and service in Austin.

When we inspect, install, or repair your roof, we want to provide you with the best options for your roof design, components, and ventilation. We are Master Elite Contractors bringing you the latest in roofing technology, and a member of our local area Better Business Bureau, so you know we take pride in our work and our community.

Contact us by phone or email to schedule your FREE roofing inspection and quote today.

Driftwood Builders Roofing

Author: Driftwood Builders Roofing

Driftwood Builders Roofing is a family-owned residential roofing company headquartered in Manchaca, Texas, serving Austin and the surrounding Hill Country since 2005. The company has delivered 2,776 full roof replacements and 783 repairs across 3,559 different customers over 20 years in business, with 97 years of combined construction experience across the leadership team and 74 years specifically inside Driftwood Builders. The company holds the highest contractor certifications offered by the major shingle manufacturers, including GAF Master Elite Contractor (the top 2% of GAF contractors nationally), GAF Certified Green Roofer, Owens Corning certified, TAMKO Pro Certified Contractor, and a Berridge Roof Installation Seminar Certificate for standing-seam metal roofs. Driftwood is an NRCA member, holds an Angie's List Super Service Award, is BBB Accredited, and is a GuildQuality member for verified customer satisfaction data. James Hardie certification covers the siding side of the business. Services include residential roof replacement, leak and storm-damage repair, tile roof repair, metal roofing, TPO commercial roofing, roof inspections, hail and storm damage inspections with insurance claim assistance, gutter work, and James Hardie siding. The customer-protection policy is straightforward: Only Pay Upon Completion. The company serves 22 cities across the Hill Country and Greater Austin and holds a 5-star rating across Google, GuildQuality, Angi, Nextdoor, Facebook, Thumbtack, and Yelp.

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