Modified Bitumen Roofing

A reliable low-slope roofing solution for commercial buildings and Florida homes with flat roof sections.

Modified bitumen roofing is commonly used on commercial buildings and low-slope roof areas throughout Jacksonville and Northeast Florida. It provides durable, watertight protection in areas where traditional shingles are not suitable, including flat roof sections, roof transitions, and additions.

At SEC Roofing & Construction Group, we install high-quality modified bitumen roofing systems from trusted manufacturers like CertainTeed. Whether your property has a full low-slope roof or a smaller flat section integrated with shingles, our team helps ensure long-term performance and proper drainage in Florida’s demanding climate.

Request a Flat Roof estimate

Why Modified Bitumen Performs Well in Florida

Modified bitumen roofing systems are well suited for Florida conditions, especially on flat and low-slope roof areas where water control and heat resistance are critical.

  • Excellent protection against heavy rainfall and wind-driven water
  • Handles prolonged heat exposure common in Florida summers
  • UV-resistant surfacing helps reduce material breakdown
  • Designed for low-slope drainage where standing water is a concern
  • Proven performance on Florida commercial and coastal structures

Where Modified Bitumen Is Typically Used

Modified bitumen roofing is often chosen for specific roof sections rather than entire residential roofs, making it a practical solution for mixed roofing systems.

modified bitumen roofing porch roof jacksonville, fl


Residential Flat Roof Areas

  • Flat roof sections on Florida homes
  • Porches, sunrooms, and additions
modified bitumen roofing on a commercial roof in jacksonville, fl


Commercial & Multifamily Buildings

  • Offices and retail centers
  • Apartment and condominium buildings
modified bitumen roofing transition to and shingle roof in jacksonville, fl


Roof Transitions & Problem Areas

  • Low-slope transitions between roof types
  • Areas prone to standing water or leaks

Residential & Commercial Applications of Modified Bitumen

Modified bitumen is a versatile solution used across both commercial and residential properties in Northeast Florida. Many Jacksonville homes have a combination of asphalt shingles and modified bitumen — and each section requires the correct material and installation method.

Residential Homes

  • Flat roof sections common on Florida home designs
  • Porches, sunrooms, and room additions
  • Transitions between shingle and flat roofing systems
  • Isolated flat roof areas that can be repaired independently

Commercial Properties

  • Flat and low-slope roofing systems
  • Office buildings, retail centers, and warehouses
  • Multifamily and condominium buildings
  • Roofs requiring regular HVAC or maintenance access

Repair vs Replacement for Modified Bitumen Roofs

One of the advantages of modified bitumen roofing is that it often allows for targeted repairs rather than full roof replacement, depending on the condition of the system. In many cases, isolated issues such as seam separation, flashing failures, or localized leaks can be repaired without removing the entire roof. This makes modified bitumen a practical option for commercial buildings and Florida homes with small flat roof sections.

However, replacement may be recommended when:

  • The membrane has widespread deterioration
  • Multiple repairs have already been performed
  • Moisture is trapped beneath the roofing system
  • The roof has reached the end of its service life

At SEC Roofing & Construction Group, we evaluate each roof individually and explain whether repair or replacement makes the most sense for your property, usage, and long-term goals.

CertainTeed® Flintlastic Modified Bitumen Systems

Certainteed Shingle Master Certificate awarded to SEC Roofing

We install CertainTeed® Flintlastic modified bitumen roofing systems, a trusted low-slope solution known for durability, weather resistance, and consistent performance. These systems are widely used on commercial buildings and Florida homes with flat or low-slope roof sections.

You can review available system options and color selections here:
View the CertainTeed® Flintlastic Product Brochure (PDF)

Get Started With Your Modified Bitumen Roofing Project in Jacksonville

If your property includes flat or low-slope roof sections, our team can help determine whether modified bitumen repair or replacement is the right solution for your Jacksonville property.

Request a flat roof estimate

Request an estimate from SEC Roofing to replace your Jacksonville-area roof with high-quality modified bitumen.

Schedule a flat roof consultation

Not sure if you need a repair or replacement on your Jacksonville property? Schedule a free inspection to review your options with a local roofing expert.

Frequently Asked Questions About Modified Bitumen Roofing

Modified bitumen is a durable flat and low-slope roofing system made from asphalt combined with reinforcing materials. It’s commonly used on commercial buildings and on flat roof sections of Florida homes where shingles aren’t suitable.

Yes. Modified bitumen performs well in Florida’s heat, heavy rain, and intense sun. It offers strong waterproofing, reliable seam protection, and good resistance to UV exposure, making it a practical choice for flat and low-slope roof areas.

On Florida homes, modified bitumen is often installed on flat or low-slope sections such as porches, sunrooms, additions, garages, or roof transitions where shingles cannot be installed properly.

When properly installed and maintained, modified bitumen roofing can last 15–25 years in Florida conditions. Lifespan depends on factors like sun exposure, drainage, foot traffic, and regular inspections.

Signs like recurring leaks, membrane cracking, ponding water, or seam separation may indicate the need for attention. A professional inspection helps determine whether a targeted repair or full replacement is the best option.