MODIFIED BITUMEN ROOFING SYSTEM
Commercial Modified Bitumen Roofing
Flexible. Waterproof. Reliable. Modified bitumen: Fortify your roof.
Modified Bitumen Roofing
Waterproof and Flexible Solutions
Discover commercial modified bitumen roofing offering superior waterproofing and flexibility, ideal for properties requiring reliable protection against leaks and weather damage.
Expert Installation and Maintenance
Trust our skilled team for precise installation and proactive maintenance of commercial modified bitumen roofing, ensuring long-lasting performance and peace of mind.
Cost-Effective and Durable
Invest in cost-effective commercial modified bitumen roofing known for its durability and longevity, providing value and reliability for your property over the years.
What Is Modified Bitumen Roofing?
Modified bitumen is an asphalt-based roofing system reinforced with polyester or fiberglass and modified with rubber (SBS) or plastic (APP) polymers. It is installed in multiple plies, giving low-slope roofs layered, redundant protection and excellent puncture resistance.
Why building owners choose modified bitumen:
- Multiple plies for redundant waterproofing
- Tough surface that handles foot traffic
- Granulated cap sheets protect against UV and weather
- SBS stays flexible in the cold; APP resists heat and UV
- Torch, cold-applied, hot-mopped or self-adhered installs
- A familiar system that is easy to repair
Typical Brands
Modified Bitumen Products
We install multi-ply modified bitumen systems with matching base sheets, cap sheets, insulation and flashings, including GenFlex asphalt roofing systems.
GenFlex SBS
SBS membranes are modified with rubber-like polymers for flexibility and cold-weather resilience, so they handle building movement and freeze-thaw cycles well. GenFlex also offers self-adhered ModBit SA for flame-free installs on occupied buildings.
GenFlex APP
APP membranes are modified with plastic-like polymers for toughness and strong resistance to UV and heat. They are typically torch-applied and are a durable choice for roofs that see intense summer sun.
Modified Bitumen FAQ
What is the difference between SBS and APP?
SBS is modified with rubber-like polymers, so it stays flexible in cold weather and handles building movement well. APP is modified with plastic-like polymers that add toughness and heat and UV resistance. Both are proven choices, and we will recommend the right one for your roof.
How long does a modified bitumen roof last?
A modified bitumen roof commonly lasts 15 to 20 years or more, depending on the number of plies, the surfacing and how well it is maintained.
Are there flame-free installation options?
Yes. Cold-applied and self-adhered modified bitumen systems install without open flame, which makes them a good option for occupied buildings and sites where torch work is restricted.
Can an aging modified bitumen roof be coated?
Often, yes. If the roof is still sound, a silicone roof coating can seal aging modified bitumen, reflect heat and extend its service life without a tear-off.
Does modified bitumen hold up to foot traffic?
Yes. Multi-ply modified bitumen is one of the toughest low-slope systems, which makes it a good fit for roofs with HVAC equipment and regular maintenance traffic.
Explore Modified Bitumen Commercial Roofing
Modified Bitumen Commercial Roofs
