Green Group Roofing is a licensed roofing contractor serving the San Francisco Bay Area with over 20 years of experience installing, repairing, and maintaining modified bitumen systems. Whether you're building a new home, replacing an aging roof, or repairing damage, our expert team has the knowledge and craftsmanship to deliver exceptional results.
Modified Bitumen is commonly used for commercial and industrial buildings across Oakland, Hayward, Concord, and the greater Bay Area.
What Is Modified Bitumen?
Modified bitumen combines traditional asphalt with plastic or rubber polymers (modifiers) to increase flexibility and durability. It's typically applied in multiple layers, with each layer reinforced with fiberglass or polyester, creating a built-up waterproof membrane.
Common in: Oakland, Hayward, Concord, Richmond
Pros and Cons of Modified Bitumen
Advantages
- Excellent puncture and tear resistance
- Multi-layer redundancy prevents leaks
- Good for moderate foot traffic
- Proven track record (decades of use)
- Can be applied with heat or cold adhesive
- Cost-effective commercial solution
Considerations
- Installation requires torches (fire hazard)
- Dark surface absorbs heat
- Heavy material requires strong roof deck
- Seams can fail if poorly installed
Where Modified Bitumen Works Best in the Bay Area
Modified Bitumen is particularly well-suited for:
- Commercial and industrial buildings
- Flat roofs with moderate foot traffic
- Properties in moderate climates
- Budget-conscious building owners
Our team has installed modified bitumen systems throughout the Bay Area's diverse microclimates—from foggy coastal areas to hot inland valleys. We understand how local weather patterns affect roof performance and will recommend the best specifications for your specific location.
Our Modified Bitumen Services
Modified Bitumen Repair
Expert repair services for leaks, damage, and wear on modified bitumen systems.
Learn MoreModified Bitumen Installation
Complete modified bitumen installation with premium materials and expert craftsmanship.
Learn MoreModified Bitumen Maintenance
Regular maintenance to extend the life of your modified bitumen and prevent costly repairs.
Learn More24/7 Emergency Service Available
Commercial roof emergencies don't wait. We offer 24/7 emergency repair services for modified bitumen systems.
Emergency Repair ServicesService Areas for Modified Bitumen Projects
We install and service modified bitumen throughout the San Francisco Bay Area, including:
Modified Bitumen - Frequently Asked Questions
Common questions about modified bitumen for Bay Area homes and buildings