Learn how modified bitumen roofing can reduce heat gain, lower energy bills, and meet Florida energy codes. Roof Nuts installs cool roof systems for lasting efficiency. Call 904-694-3426.

Are modified bitumen roofs energy-efficient?

Modified Bitumen Roofing FAQs
December 26, 2025•1 min read

FAQ: Are Modified Bitumen Roofs Energy-Efficient?

Answer:
Yes — when designed and installed properly, modified bitumen roofs can significantly improve your home or building’s energy performance in Florida’s climate.

Here’s why:

  • Cool Roof Options:
    Light-colored cap sheets and reflective coatings can bounce back a large portion of the sun’s heat instead of absorbing it. This helps reduce attic and indoor temperatures.

  • Added Insulation:
    Installing polyisocyanurate insulation under the roofing membrane boosts thermal resistance. NRCA recommends a minimum R-value of 5.6 per inch of polyiso board for low-slope roofs.

  • Florida Energy Code Compliance:
    Roof Nuts installs modified bitumen systems that meet or exceed Florida’s Building Energy Code requirements for reflectivity and insulation.

  • Lower Energy Bills:
    By reducing rooftop heat gain, your HVAC system doesn’t have to work as hard, which can cut cooling costs over time.

  • Durability with Performance:
    Modified bitumen systems are tough enough to handle Florida’s UV exposure, heavy rains, and wind-driven storms — without sacrificing energy performance.

Other Common Questions About Modified Bitumen Roofs

How long does a modified bitumen roof last in Florida?
With professional installation and regular maintenance, they can last 20+ years, even in Florida’s harsh climate.

Can an existing modified bitumen roof be upgraded for better efficiency?
Yes. Adding a reflective coating and/or additional insulation layers can improve performance without a full tear-off.

Do reflective coatings need reapplication?
Generally every 5–10 years, depending on product type, UV exposure, and maintenance.

Is modified bitumen good for flat roofs?
Absolutely. It’s designed for low-slope and flat roofs and provides a watertight seal that handles ponding water better than many other systems.

Roof Nuts installs and maintains modified bitumen roofing systems across Jacksonville, Miami, Tampa, Orlando, and beyond.
Call 904-694-3426 for an energy-efficient roof that works for Florida.

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