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If your building has a low-slope or flat roof, Modified Bitumen roofing offers a powerful combination of flexibility, durability, and water resistance. Originally developed as an advanced version of traditional
Built-Up Roofing (BUR), modified bitumen systems are engineered to stand up to San Diego’s heat, sun, and seasonal rain while delivering long-lasting performance.
Modified bitumen is an asphalt-based material enhanced with rubber or plastic modifiers (such as SBS or APP) to improve flexibility and strength. These membranes are layered over a base sheet and sealed together to form a durable, waterproof barrier — typically installed using heat, cold adhesives, or self-adhering techniques.
It's a go-to solution for buildings where moisture resistance, strength, and ease of maintenance are top priorities.
Property owners in San Diego choose modified bitumen for its ability to perform in challenging environments. Here's why it's one of the most trusted systems for flat and low-slope roofs:
✅ Outstanding Waterproofing – Keeps water out with multi-layer protection
✅ High Tensile Strength – Withstands foot traffic, weather, and movement
✅ Thermal Efficiency – Reduces heat transfer, helping regulate indoor temps
✅ Versatile Installation – Can be applied via torch-down, cold adhesives, or peel-and-stick systems
✅ Cool Roof Options Available – Reflective top layers reduce solar heat gain
✅ Fire, Wind, and Hail Rated – Can be part of a rated and certified roofing system
✅ Cost-Effective Lifecycle – Low maintenance and long-lasting value
✅ Flame-Free Installation Options – Ideal for sensitive sites where open flame is not permitted
✅ Manufacturer Warranties Available – Protect your investment for the long term
This system is ideal for:
Whether you own a small business or a large facility, modified bitumen provides the durability and energy efficiency your flat roof needs.
San Diego’s combination of UV exposure, warm summers, and occasional rainstorms demands a roofing system that’s tough and resilient. The multi-layer design of modified bitumen helps minimize heat transfer , reducing stress on your HVAC system and lowering cooling bills.
Combined with reflective surfacing, it qualifies as a cool roofing system, helping meet energy codes and improving occupant comfort.
We’ve installed modified bitumen systems across San Diego for years. Our certified team will walk you through material options, recommend the best installation method, and ensure that your project is built to last — and backed by a manufacturer warranty when applicable.
Whether you're considering torch-down or self-adhering applications, we handle each job with safety, speed, and professionalism.
Ready to upgrade your flat roof with a system built to last? Contact us today for a free consultation and let us help you choose the best roofing solution for your property.
📞 Call us now or fill out our quick form to schedule your estimate.
We service most roof types and offer Residential and Commercial Replacements, Repairs and Coating.
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Contact Titan Roofing Inc.—a trusted name among San Diego roofing companies.
760-214-6313
Roof Replacements and Repairs
Happy Clients
Years Experience
Testimonials
Cory H.
San Diego Resident
Jim W.
Carlsbad Resident
If you are reading this, that means you are looking for a great roofer! Titan Roofing owned by Andrez Lopez is incredible! We've done quite a bit of remodeling at our home and contractors were all over the map with bids and credibility.
I researched six large and small companies from Angis list and Home advisor. One company came out and said "I'll look at your roof from a satellite view and give you bid in a few days! Huh?!
Andrez, the owner of Titan Roofing was the ONLY owner who walked up ON THE ROOF himself, told us what was needed, and then said that we needed to replace our bathroom vents and fireplace spark arrestors! And that was in the first 20 minutes! We paid him to come back and replace those items!
We cannot be happier! I'm kind of a hard ass, but when I realized how great Andrez' Titan Roofing was, we hired them. They are far above the other roofers we interviewed! His bid was $5000 less that three other bids, and get this: He also replaced all of the bad facia, and installed new rain gutters!
So, what will you get with Titan Roofing?
To read the full review, click here.
Cori H.
San Diego Resident