When most homeowners think about their roof, they picture shingles—the visible top layer that gives a house its finished look. But what many don’t realize is that true roofing protection starts below the surface. At Above All Roofing, we know that roof underlayment is one of the most critical components of a reliable, long-lasting roofing system. And while you may never see it, your home feels the difference every single day.
If you’re considering a roof replacement or repair, understanding the role of underlayment can help you make a smarter, more durable investment in your home.
What Is Roof Underlayment?
Roof underlayment is the protective layer installed directly onto your roof deck, underneath the shingles or other outer roofing materials. Acting as a secondary weather barrier, it provides an extra line of defense against water intrusion caused by wind-driven rain, ice dams, snow, or damaged shingles.
This hidden layer plays an especially vital role in protecting your roof’s structure and preventing leaks—ensuring that even when shingles are compromised, your home stays dry and secure.
Why Underlayment Should Never Be Overlooked
At Above All Roofing, we believe that cutting corners below the surface isn’t an option. A roofing system is only as strong as its weakest layer, and in many cases, it’s the underlayment that saves a home from costly water damage during high winds or severe weather.
Here’s what underlayment does for your roof:
Acts as a backup barrier against leaks if shingles are blown off or fail
Protects the roof deck from moisture during the installation process
Prevents mold, rot, and structural damage caused by prolonged water exposure
Helps meet local building codes and manufacturer warranties
That’s why every project we complete includes high-performance underlayment as a non-negotiable part of the build—not just for compliance, but for real protection and peace of mind.
Types of Roof Underlayment: Which One Is Right for You?
There are two main types of roof underlayment commonly used today, each with unique advantages:
1. Felt Underlayment (Asphalt-Saturated)
Often referred to as “tar paper,” felt underlayment is made from organic or fiberglass base material soaked in asphalt. It’s the traditional choice for roof installations and offers a cost-effective moisture barrier that’s still widely used today.
Affordable
Provides basic water resistance
Suitable for low-slope or temporary coverage
However, felt is heavier, more prone to tearing, and doesn’t perform as well in high-heat or high-wind environments compared to newer materials.
2. Synthetic Underlayment
A more modern and increasingly popular solution, synthetic underlayment is made from engineered polymers that offer superior strength and performance. It’s lighter, more durable, and significantly more resistant to moisture and tearing—especially during installation.
Excellent tear resistance
Superior waterproofing capabilities
UV-resistant and safer for walkability
Ideal for Ontario’s unpredictable weather
At Above All Roofing, we often recommend synthetic underlayment for its long-term durability and all-season protection, particularly for homeowners looking to maximize the lifespan of their new roof.
Why Homeowners Choose Above All Roofing
With decades of combined experience and a reputation for top-quality workmanship, Above All Roofing goes beyond basic installation. We understand that a roofing project is more than just shingles—it’s about safeguarding your home from the top down.
When you choose us, you get:
High-quality underlayment materials, selected based on your home’s needs
Meticulous installation, done by skilled, fully insured roofing professionals
Transparent guidance, so you understand the materials and methods we use
Peace of mind, knowing your home is protected by layers of proven performance
Protect Your Home Where It Counts Most
A beautiful roof may catch the eye—but it’s the strength beneath the surface that keeps your home safe. Whether you’re planning a full roof replacement or evaluating storm damage, don’t underestimate the importance of quality underlayment. At Above All Roofing, we take every layer seriously—because you deserve a roof that performs just as well as it looks.
📞 Call 289-338-9349
✉️ Email Info@aboveallroofingcontracting.com
🔨 Schedule your free consultation today and experience roofing done right—from the bottom up.
