Schedule Appointment
Austin Pro Calender Icon
Appointment
phone icon
Call Us
Austin Pro Siding, Windows, Roofing, Patio Covers Logo

The Importance of Replacing Your Roof’s Old Underlayment

By
austin pro
Written by Austin Pro Management
July 22, 2024

Your roof plays an essential role in your home’s aesthetic appeal and functionality. Thus, you must see to it that it is in good condition to ensure its optimal performance. Austin Pro Siding, Windows & Roofing, one of the top roofing and vinyl siding contractors in the area, explains why you need to replace your old roof underlayment.

The Importance of Your Roof Underlayment

The asphalt shingles or metal panels of your roof protect your home against the harmful effects of moisture and UV rays. However, some areas of your roof aren’t protected, resulting in gaps where debris, water and the other elements. This is where the underlayment does its job.

It acts as your roof’s secondary barrier, shielding the deck, rafters and trusses from rot while providing stability to the whole structure. Reputable roofing and window companies make sure to install it to manufacturer specifications to maximize its effectiveness.

Why Should You Replace It When It Gets Old

Simply put, an underlayment that is past its service life no longer offers the protection necessary for your home. The same goes for the rest of your roof components, including the flashing and shingles. Be sure to have them inspected by experienced roofers so you can determine whether it needs to be replaced. If they do recommend a replacement roof, see to it that they perform a complete tear-off.

Some roofers leave the old roof covering and the underlayment and place a new one over it. It is called a roof overlay, and it only works when these components are still in good condition. A roof that is past its service life can have underlying issues underneath the shingles and underlayment, which is why a complete tear-off is done before installing the new roof.

In addition to siding repair and installation, Austin Pro Siding, Windows & Roofing also specializes in roof replacement. By combining high-quality roofing products with excellent craftsmanship, we can install roofing systems that can withstand the local climate and improve your home’s curb appeal. Give us a call today at (512) 550-0000 to learn more. You may also fill out our contact form to schedule an appointment.

How Modern Windows Transform Your Home
February 28, 2026
How Modern Windows Transform Your Home

Transform your living space with modern windows that boost light, style, and efficiency.

The Real Reason Austin Homeowners Are Trading Wood for Fiberglass Entry Doors
March 20, 2026
The Real Reason Austin Homeowners Are Trading Wood for Fiberglass Entry Doors

Austin’s UV, humidity swings, and sudden storms can warp and wear wood entry doors fast. Learn why modern fiberglass entry doors deliver a wood look with better sealing, lower maintenance, and long-term value in Central Texas.

The 'Oven Room' Cure: Why Smart Austin Homeowners Are Prioritizing West-Facing Window Replacement
July 14, 2026
The 'Oven Room' Cure: Why Smart Austin Homeowners Are Prioritizing West-Facing Window Replacement

That sweltering "oven room" in your Austin home isn't an HVAC problem — it's a window problem. Upgrading just your west-facing windows with low-SHGC, ENERGY STAR-certified glass can dramatically cut heat gain, lower your cooling bills, and make every room in your home livable again. Learn why smart Austin homeowners are making this targeted upgrade first.

Illuminating Your Outdoor Space: Patio Lighting Ideas
February 28, 2026
Illuminating Your Outdoor Space: Patio Lighting Ideas

Set the mood outdoors. Explore creative lighting ideas to illuminate your patio and yard.

Metal Roof Installation Over Old Shingles: Yay or Nay?
February 28, 2026
Metal Roof Installation Over Old Shingles: Yay or Nay?

Can you layer metal over old shingles? We explore the pros, cons, and code requirements.

Sunrooms and Patios in Austin: Embracing the Texan Sun with Style
February 28, 2026
Sunrooms and Patios in Austin: Embracing the Texan Sun with Style

Embrace the sun without the heat. Explore stylish sunroom and patio designs for Texas.

From Wood to Wonders: The Transformative Journey of Exterior Siding
February 28, 2026
From Wood to Wonders: The Transformative Journey of Exterior Siding

Trace the evolution of siding materials from traditional wood to modern, durable synthetics that offer superior protection and style.

Green Is the New Black: Exploring Eco-Friendly Roofing Options
February 28, 2026
Green Is the New Black: Exploring Eco-Friendly Roofing Options

Sustainability is in style. Explore eco-friendly roofing materials that reduce your carbon footprint and improve home efficiency.

How to Choose the Right Roofing Company for Your Home
February 28, 2026
How to Choose the Right Roofing Company for Your Home

Don't hire blindly. Learn the key factors to look for when selecting a trustworthy roofer.

The 'Acoustic Leak': Why You Can Hear Every Car Drive By Your Austin Home (And Why a Window Replacement Is the Only Fix)
July 14, 2026
The 'Acoustic Leak': Why You Can Hear Every Car Drive By Your Austin Home (And Why a Window Replacement Is the Only Fix)

If you can hear every truck and car from inside your Austin home, your old builder-grade windows are the culprit — not your curtains or HVAC. Modern window replacement with laminated glass and argon gas fill can dramatically reduce exterior noise while also cutting your summer cooling costs. Learn why a professional window upgrade is the only real fix for Austin's growing noise problem.