Modified Bitumen Roofing
Advanced Polymer-Modified Asphalt Membranes
Flexible, durable, and easy to repair commercial flat roofing with a 15-25 year lifespan.
Why Choose Modified Bitumen?
Modified bitumen combines traditional asphalt waterproofing with modern polymer technology for superior flat roof performance.
Excellent Flexibility
SBS-modified membranes remain flexible even in cold temperatures, preventing cracking.
UV Resistant
Granule-surfaced cap sheets reflect UV rays and protect the underlying membrane.
15-25 Year Lifespan
Long-lasting performance with proper installation and maintenance.
Easy Repairs
Damaged areas can be patched quickly without extensive work or full replacement.
Multiple Install Methods
Torch-applied, cold-applied, or self-adhered options to suit any project.
Cost Effective
Excellent value with reasonable cost and long-term reliable performance.
Our Modified Bitumen Installation Process
Expert installation using the method best suited to your building — torch-applied, cold-applied, or self-adhered.
Roof Inspection & Assessment
We evaluate your existing roof system, checking the deck structure, insulation, drainage slopes, and any moisture intrusion. For re-roofing projects, we assess whether overlay is possible or full tear-off is needed. You receive a detailed report with photos and a transparent estimate.
Membrane & Method Selection
We recommend the ideal modified bitumen type — SBS (rubber-modified for flexibility) or APP (plastic-modified for heat resistance) — and installation method based on your building's conditions. For most North Carolina applications, we recommend SBS modified bitumen for its superior flexibility across our variable temperatures.
Professional Installation
Our certified technicians apply the base sheet and cap sheet using torch-applied, cold-applied, or self-adhered methods. Torch application creates the strongest bonds through controlled heat fusion. Cold application uses adhesives for flame-free installation. Every seam, flashing, and penetration is detailed to manufacturer specifications.
Final Walkthrough & Warranty
We conduct a thorough final inspection, verify all seams and flashings, clean all debris, and walk the completed roof with you. You receive complete warranty documentation and a maintenance schedule, including recommendations for reflective coatings that can extend your roof's life and improve energy efficiency.
Ideal Applications for Modified Bitumen Roofing
Modified bitumen's flexibility and ease of repair make it a smart choice for these building types.
Low-Slope Commercial
Office buildings and commercial properties with flat or low-slope roof decks.
Retail & Strip Malls
Shopping centers and retail spaces that need reliable, leak-free flat roof protection.
Churches & Community
Houses of worship and community centers with flat roof sections and complex flashing needs.
Multi-Unit Residential
Apartment complexes, condos, and townhome communities with flat roof areas.
Small Warehouses
Distribution centers and storage facilities that require cost-effective flat roof systems.
Additions & Expansions
Building additions and roof expansions where modified bitumen integrates easily with existing systems.
What Our Clients Say
See what property owners across North Carolina are saying about our roofing services.
Need a Flexible, Durable Flat Roof Solution?
Get a free, no-obligation inspection and estimate from our modified bitumen roofing specialists.
How Modified Bitumen Compares
| Feature | Modified Bitumen | BUR | TPO | EPDM |
|---|---|---|---|---|
| Cost per sq ft | $5-9 | $6-12 | $5-10 | $4-8 |
| Lifespan | 15-25 years | 20-30 years | 20-30 years | 25-30 years |
| Flexibility | Excellent (SBS) | Rigid | Good | Excellent |
| Repair Ease | Easy (patch & torch) | Moderate | Moderate | Easiest |
| Install Methods | Torch, cold, self-adhered | Hot bitumen only | Heat-welded | Adhered/mechanical |
| Best For | Low-slope, repairs, overlays | Large industrial | General commercial | Budget projects |
Why Choose Faircloth for Modified Bitumen
Nearly five decades of flat roofing expertise across the Triangle — here's what sets us apart.
- 49 years of commercial roofing experience
- Expert in torch-applied, cold-applied & self-adhered systems
- SBS and APP membrane specialists
- Experienced with overlays and re-roofing
- Reflective coating options to extend roof life
- Free inspections & written estimates
- Locally owned — based in Wendell, NC
Expert Modified Bitumen Installation in Raleigh
For nearly 50 years, Faircloth Roofing Inc. has been installing commercial roofing systems throughout the Raleigh-Durham area. Modified bitumen roofing is one of our most popular recommendations for flat and low-slope commercial buildings, offering an excellent balance of performance, durability, and value.
Our certified technicians are trained in all modified bitumen installation methods, including torch-applied, cold-applied, and self-adhered systems. We work with leading manufacturers to provide quality membranes backed by comprehensive warranties.
Modified Bitumen Options
| Type | Modifier | Best For |
|---|---|---|
| SBS Modified | Rubber (flexible) | Variable climates, most applications |
| APP Modified | Plastic (heat resistant) | High sun exposure areas |
| Two-Ply System | Base + cap sheet | Maximum durability |
Our Modified Bitumen Services
- New Installation: Complete systems with proper insulation, drainage, and flashing.
- Repairs: Seam repair, patch work, blister repair, and flashing maintenance.
- Re-Roofing: Tear-off and replacement of aging flat roof systems.
- Coatings: Reflective coatings to extend roof life and improve energy efficiency.
Get Your Free Estimate
Expert modified bitumen roofing consultation with no obligation.
Trusted Manufacturer Partnerships
Modified Bitumen Roofing FAQs
Get answers to common questions about modified bitumen roofing.
What is modified bitumen roofing?
Modified bitumen is an asphalt-based roofing membrane enhanced with polymer modifiers (rubber or plastic) for improved flexibility, strength, and weather resistance. It combines the proven waterproofing of traditional built-up roofing with modern polymer technology. The result is a durable, flexible membrane ideal for flat and low-slope commercial roofs.
What is the difference between SBS and APP modified bitumen?
SBS (Styrene-Butadiene-Styrene) uses rubber modifiers, making it highly flexible and excellent for cold climates. It can be torch-applied, cold-applied, or self-adhered. APP (Atactic Polypropylene) uses plastic modifiers, providing superior UV resistance and heat tolerance. APP is typically torch-applied. We recommend SBS for most North Carolina applications due to its flexibility in our variable temperatures.
How is modified bitumen installed?
Modified bitumen can be installed using several methods: torch-applied (heat-welding with an open flame), cold-applied (using adhesives or mastics), or self-adhered (peel-and-stick membranes). Torch application creates the strongest bonds but requires trained technicians. Cold application is safer and can be done in more conditions. We'll recommend the best method for your specific situation.
How long does modified bitumen roofing last?
Quality modified bitumen roofing typically lasts 15-25 years with proper installation and maintenance. Factors affecting lifespan include membrane quality, installation method, UV exposure, and maintenance frequency. Two-ply systems (base sheet plus cap sheet) last longer than single-ply applications.
How much does modified bitumen roofing cost?
Modified bitumen roofing typically costs $5-9 per square foot installed, depending on membrane type (SBS vs APP), installation method, and roof accessibility. Two-ply systems cost more than single-ply but provide better protection and longevity. Contact us for a free detailed estimate specific to your project.
What maintenance does modified bitumen require?
Modified bitumen requires minimal but regular maintenance. We recommend annual inspections to check seams, flashing, and overall condition. Keep the roof clear of debris and ensure proper drainage. Prompt repair of any cuts, punctures, or seam issues prevents larger problems. A reflective coating can extend life by reducing UV exposure.
Modified Bitumen Roofing Across North Carolina
From the Triangle to surrounding communities, we provide modified bitumen roofing services throughout NC. Click your city for local service information.
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