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.

Asphalt Shingle Color: Does It Matter?
February 28, 2026
Asphalt Shingle Color: Does It Matter?

Does roof color affect energy efficiency? We answer common questions about how shingle color impacts your home's temperature and style.

The Impact of Hail: A Deep Dive into Roof Damage
March 2, 2026
The Impact of Hail: A Deep Dive into Roof Damage

Hail damage isn't always obvious. We take a deep dive into how ice impacts different roofing materials.

Uncovering the Legacy: The Evolving Story of Texas Roofing
February 28, 2026
Uncovering the Legacy: The Evolving Story of Texas Roofing

From the frontier to the suburbs, we uncover the history and evolution of roofing in Texas.

The 'Oven Room' Cure: Why Smart Austin Homeowners Are Prioritizing West-Facing Window Replacement
March 20, 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.

Essential Questions to Ask When Hiring an Exterior Painter
February 28, 2026
Essential Questions to Ask When Hiring an Exterior Painter

Hire with confidence. Ask these essential questions to ensure your exterior painter is qualified, insured, and ready to do the job right.

The Worst Window Maintenance Habit You Should Always Avoid
February 28, 2026
The Worst Window Maintenance Habit You Should Always Avoid

Are you damaging your windows? Avoid these common cleaning and maintenance mistakes.