When homeowners invest in a new roof, they often focus on the shingles because they’re the most visible part of the project. While shingles are incredibly important, they’re only one piece of a complete roofing system. One of the most critical components is actually hidden beneath them: the roofing underlayment.
At Barringer Brothers Roofing, we believe every layer of your roof should work together to protect your home. That’s why we install high-quality synthetic roofing underlayment on roof replacement and new construction projects throughout O’Fallon, IL. Although you may never see it after installation, underlayment provides an extra layer of protection that helps your roof withstand Southern Illinois weather for years to come.
What Is Roofing Underlayment?
Roofing underlayment is a water-resistant barrier installed directly over the roof decking before shingles are applied. Think of it as your roof’s backup protection.
Your shingles are designed to shed rain and snow, but during severe weather, wind-driven rain or damaged shingles can allow moisture underneath the roof’s surface. Roofing underlayment helps keep that moisture from reaching the wooden roof decking below.
Without quality underlayment, even a small amount of water intrusion can lead to costly problems over time.
Why Roofing Underlayment Is So Important
Homes in O’Fallon experience a variety of weather conditions throughout the year, including:
- Heavy rain
- Strong winds
- Hailstorms
- Snow and ice
- High summer temperatures
Every one of these conditions puts stress on your roofing system.
Roofing underlayment helps by:
- Adding a secondary moisture barrier
- Protecting the roof decking from water damage
- Helping reduce the risk of roof leaks
- Providing temporary protection during installation
- Supporting the overall performance of your roofing system
It’s one of the reasons a professionally installed roof performs better over the long term.
Synthetic Underlayment vs. Traditional Felt
Roofing materials have come a long way over the years.
While traditional felt paper was once the industry standard, many roofing contractors now use synthetic underlayment because of its improved performance.
Synthetic underlayment offers several advantages, including:
- Greater tear resistance
- Better water resistance
- Improved durability
- Lighter weight
- Better traction for installers
- More consistent performance during changing weather conditions
These benefits help create a stronger roofing system while improving protection beneath your asphalt shingles.
Underlayment Helps Protect More Than Your Roof
Many homeowners don’t realize that roofing underlayment protects much more than the shingles themselves.
Roof Decking
The roof decking forms the structural foundation of your roofing system. If moisture reaches the decking, it can eventually lead to rot, mold, and structural deterioration.
Underlayment helps reduce that risk by creating another layer of protection.
Your Attic
Water that gets beneath damaged shingles can eventually find its way into your attic.
Keeping moisture out helps protect insulation, framing, and stored belongings while reducing the chance of mold growth.
Your Home’s Interior
Leaks that begin on the roof can eventually damage ceilings, walls, flooring, and personal belongings.
A properly installed roofing system helps reduce the likelihood of water reaching the inside of your home.
Proper Installation Is Just as Important as Quality Materials
Even the best roofing products rely on proper installation.
At Barringer Brothers Roofing, we carefully install roofing underlayment with proper overlaps, fastening methods, and attention to every detail.
Special care is given around areas where leaks are most likely to occur, including:
- Roof valleys
- Chimneys
- Plumbing vents
- Skylights
- Wall intersections
- Roof transitions
These areas require precise installation to help direct water away from vulnerable points on the roof.
Roofing Underlayment Supports the Entire Roofing System
A roof isn’t simply a layer of shingles.
A complete roofing system includes:
- Roof decking
- Synthetic underlayment
- Flashing
- Starter shingles
- Architectural shingles
- Ridge cap shingles
- Ventilation
Every component works together to protect your home from the elements.
When one part of the system is compromised, the performance of the entire roof can suffer.
Why Homeowners Trust Barringer Brothers Roofing
Since 2004, Barringer Brothers Roofing has proudly served homeowners throughout O’Fallon and the Metro East with professional roof replacements, roof repairs, roof inspections, new construction roofing, gutters, siding, and storm damage restoration.
We’re proud to have earned more than 200 5-star reviews by providing honest recommendations, dependable service, and quality workmanship on every project.
When you choose Barringer Brothers Roofing, you’re choosing a local roofing company that understands the importance of every layer of your roofing system—from the decking all the way to the shingles.
Frequently Asked Questions
Yes. Roofing underlayment is an essential part of a complete roofing system. It provides an additional layer of protection beneath your shingles to help keep moisture away from the roof decking.
In many cases, yes. Synthetic underlayment is generally more durable, more tear-resistant, and offers better water resistance than traditional felt paper, making it a popular choice for modern roofing systems.
Roofing underlayment is designed to provide backup protection if water gets beneath the shingles. While no roofing system can guarantee leaks will never occur, quality underlayment helps reduce the risk of moisture reaching the roof decking.
Quality synthetic underlayment is designed to perform for the life of the roofing system when it is properly installed as part of a complete roof replacement.
Proper installation ensures the underlayment, flashing, shingles, and other roofing components work together to protect your home. Poor installation can reduce the effectiveness of even the highest-quality roofing materials.
Contact Barringer Brothers Roofing
If you’re planning a roof replacement in O’Fallon, IL, trust Barringer Brothers Roofing to install a complete roofing system designed for long-term protection. From premium architectural shingles to high-quality synthetic roofing underlayment, every layer matters.
📞 Call (618) 703-3036 or fill out our online contact form to schedule your free estimate today.
