Modified Bitumen Roofing Norman, OK

Installation & Repair Services

Expert Modified Bitumen Roofing Services in Norman, OK

Looking for a durable, weather-resistant roofing system for your flat or low-slope roof? At Norman Roofworks, we specialize in modified bitumen roofing installation, repair, and maintenance for commercial and residential buildings throughout Norman and the surrounding areas. Known for its strength, flexibility, and resistance to UV rays and extreme temperatures, modified bitumen is a trusted choice for long-lasting protection.

What is Modified Bitumen Roofing?

Modified bitumen roofing is an asphalt-based membrane system designed specifically for flat and low-slope roofs. It’s reinforced with polymers—such as SBS (styrene-butadiene-styrene) or APP (atactic polypropylene)—which enhance flexibility, durability, and overall performance. These membranes are also reinforced with fiberglass or polyester, improving their resistance to damage and wear.

Two Types of Modified Bitumen Roofing

SBS Modified Bitumen – A rubber-modified membrane that offers superior flexibility, especially in areas with frequent temperature changes.
APP Modified Bitumen – A more rigid membrane with increased UV resistance, ideal for sunnier climates like Oklahoma.

These systems can be installed using torch-down, cold-applied, or self-adhering methods, depending on project scope and safety considerations.

Benefits of Modified Bitumen Roofing

Long-Lasting Performance –

When properly maintained, these roofs can last 20 to 30 years.

Weather-Resistant –

Designed to handle Oklahoma’s intense sun, storms, and snow.

Watertight Seal –

Creates a seamless surface that helps prevent leaks and pooling.

Thermal Flexibility –

Expands and contracts without cracking or splitting.

Cost-Effective –

A smart, affordable roofing solution for flat commercial and residential properties.

Modified Bitumen Roof Installation in Norman, OK

At Norman Roofworks, we deliver precise, code-compliant installation for all types of modified bitumen systems. Whether you own a warehouse, retail space, or a flat-roofed home, our team ensures a long-lasting, professionally installed roof using only the best materials.

Our Installation Process

Surface Preparation –

We ensure the roof deck is clean and stable before application.

Membrane Installation –

We apply SBS or APP membranes based on your building’s needs.

Seam Sealing –

All seams are professionally sealed to ensure a watertight barrier.

UV Protective Coating –

Optional protective coatings enhance resistance to sunlight and weathering.

Modified Bitumen Roof Repair & Maintenance

Even high-performance roofing systems require occasional maintenance. Our team offers fast and affordable repair services to restore your roof’s integrity and prevent further damage.

Common Issues We Fix

Cracks, blisters, or tears in the membrane
Water ponding on flat areas
Flashing separation or deteriorated seams
Storm-related damage and aging surfaces

With regular inspections and repairs, your modified bitumen roof can continue to perform at its highest level for decades.

Why Choose Norman Roofworks?

Experienced Local Contractors –

Trusted specialists in modified bitumen roofing systems.

Top-Quality Materials –

We use fiberglass-reinforced SBS/APP membranes from leading manufacturers.

Flat & Low-Slope Roof Experts –

Proven success with commercial and residential flat roof systems.

Responsive Service –

Quick turnarounds on repairs, maintenance, and new roof installations.

Transparent Estimates –

We offer honest pricing and free on-site evaluations.

Frequently Asked Questions About Modified Bitumen Roofing

Why is modified bitumen ideal for commercial buildings?

It’s durable, waterproof, and highly resistant to UV rays and storms—perfect for flat or low-slope commercial roofs in Galveston.

Can it be combined with other systems?

Yes. Modified bitumen works well in hybrid systems with TPO, EPDM, or metal roofing for enhanced protection and energy savings.

How is it different from standard asphalt?

Modified bitumen includes polymers for added flexibility and strength, making it superior in durability and temperature tolerance.

Is it fire-resistant?

APP-modified membranes and coatings can offer fire-resistant properties—ideal for safety compliance in commercial facilities.

How does it hold up to foot traffic?

Very well. It’s a great choice for rooftops with HVAC units or frequent maintenance access.

Does it require insulation?

While the membrane provides waterproofing, rigid insulation can be added underneath for improved energy efficiency.

What if it leaks?

Our team can quickly patch or reseal damaged areas, restoring the membrane without needing a full replacement.

Modified bitumen vs. single-ply systems?

Bitumen is more puncture-resistant and robust, while TPO/PVC may offer lighter weight and reflective properties.

Which installation method is best?

Torch-down – Strong adhesion, best for skilled teams
Cold adhesive – Flame-free and safe
Self-adhered – Convenient for small-scale or time-sensitive installs

When should I replace a bitumen roof?

If your roof shows signs like:

Persistent leaks
Surface blisters or cracks
Worn or separated seams
Exceeds 25–30 years in age

Is it environmentally friendly?

Yes. Many systems incorporate recycled content and reflective coatings, lowering environmental impact and energy usage.

Does it work in Galveston's weather?

Absolutely. It’s designed to withstand heat, humidity, rain, and salt air, all common in the Galveston climate.

How long is installation?

Depending on size, most projects take a few days to one week, with minimal disruption to business operations.

Do you serve areas beyond Galveston?

Yes. We also serve nearby communities across Galveston County and surrounding coastal regions.

How do I get an estimate?

Call us or fill out our contact form to schedule a free consultation and receive a custom quote for your project.

Why is this system a top choice in Galveston?

Because it offers reliable performance, strong waterproofing, and resistance to extreme coastal weather—ideal for flat-roofed commercial buildings.

What are the downsides?

Torch-down methods require expert handling
Seams may need future resealing
Heavier than some modern membranes

How does it compare to BUR and metal?

Compared to BUR: Easier to install, less labor-intensive
Compared to metal: Better suited for flat roofs and more affordable

Can it be installed over an existing roof?

In many cases, yes—saving time and cost. We’ll assess your current roof’s condition first.

How do I pick the right contractor?

Choose a team with:

Proven experience with modified bitumen systems
Licensed, insured, and local knowledge
Clear communication and fair pricing

Schedule Your Free Roof Inspection

Thinking about upgrading to cedar shake? Need a trusted team for repairs or maintenance? Norman Roofworks is here to help. We offer detailed inspections, honest recommendations, and exceptional craftsmanship.

Call today to schedule your free estimate and find out if cedar shake roofing is the right choice for your Norman home or business.