Low-Slope Residential Roofing
Modified Bitumen Roofing Systems
Low-slope and flat residential roofs require a roofing system designed to handle standing water, thermal movement, and long-term weather exposure. Modified bitumen roofing is a proven, multi-layer membrane system commonly used on low-slope homes, additions, porches, garages and modern residential designs.
Our modified bitumen systems are two-layer assemblies installed using either self-adhering membranes or torch-down application, depending on the project requirements and homeowner preferences.
What Is Modified Bitumen Roofing?
Modified bitumen is an asphalt-based roofing membrane reinforced with polyester or fiberglass for added strength and flexibility. It is engineered specifically for low-slope roofs, offering superior waterproofing and durability compared to traditional shingles.
Unlike single-layer systems, modified bitumen relies on multiple layers working together to create a redundant, watertight roof assembly.
Quality Roofing Services for Your Home or Business
Two-Layer Modified Bitumen Systems
Our residential installations use a two-ply system, which includes:
- Base Sheet – Installed directly over the roof deck or insulation, providing the foundation of the system
- Cap Sheet – A reinforced, weather-resistant top layer with granulated or smooth finish
This layered approach improves leak resistance, longevity, and overall performance.
Installation Options
Self-Adhered Modified Bitumen
Self-adhered modified bitumen (often called peel-and-stick) uses factory-applied adhesive on the underside of the membrane.
Best for:
- Residential homes and occupied buildings
- Areas where open flame is not appropriate
- Homeowners wanting minimal odor and disruption
Advantages:
- No open flame
- Cleaner installation
- Ideal for wood-deck residential structures
Benefits to Choosing a Modified Bitumen Roofing System
This isn’t a “budget flat roof.”
Modified bitumen is one of the most proven, longest-lasting low-slope roofing systems used on residential properties and it’s trusted on commercial buildings for a reason.
When installed as a two-layer system, modified bitumen delivers a level of protection, redundancy, and durability that most residential roofing systems simply can’t touch.
Here’s what sets it apart:
- Longest warranty potential in residential roofing
Modified bitumen systems carry some of the strongest and longest warranties available, not just for homes, but across commercial-grade roofing applications as well.
- Commercial technology on a residential roof
This is the same category of roofing used on apartment complexes, mixed-use buildings, and commercial structures — scaled properly for residential use.
- Multi-layer protection, not a single point of failure
Two layers mean built-in redundancy. If one layer is compromised, the system is still protecting your home.
- Superior performance on low-slope and flat roofs
Designed specifically to handle standing water, thermal movement, and long-term exposure where shingles fail.
- Exceptional durability and puncture resistance
Ideal for areas with foot traffic, HVAC units, solar, or rooftop access.
- Proven lifespan, not marketing hype
Modified bitumen has decades of real-world performance behind it — not just brochure claims.
The Bottom Line
If your home has a low-slope or flat roof, this is not the place to cut corners.
A properly installed two-ply modified bitumen system offers:
- Longer warranties
- Stronger protection
- Commercial-level performance
- And peace of mind that lasts for decades, not just years
Whether you choose self-adhered or torch-down, this system is built for homeowners who want the most durable, longest-lasting solution available.
