Modified Bitumen Roofing
Hot and cold-applied mod bit systems for durable commercial flat roof performance
Is this the right solution for your situation?
If you have an existing built-up or modified bitumen roof that needs replacement, or a low-slope building where multi-layer redundancy is a priority — mod bit is a time-tested option with a proven installation record.
This system is a strong fit when:
- Low-slope commercial buildings where multi-layer waterproofing is a priority
- Renovation and re-roofing projects on existing BUR or mod bit systems
- Cold climates where flexibility and layered protection matter
- Facilities where torchless cold-process application is required for fire safety
When to consider alternatives
Single-ply membranes (TPO, EPDM, PVC) are generally faster to install and lighter in weight. Mod bit's advantage is multi-layer redundancy and the ability to incorporate insulation layers directly into the system.
Compare all roofing systems →What working with us looks like
Every project follows the same proven process — from the first site visit through warranty issuance.
01
Inspection
We assess your roof's current condition, often using thermal imaging.
02
Proposal
Detailed scope of work and transparent pricing. No pressure, no upsell.
03
Contract
Clear terms, defined timeline, and warranty commitments in writing.
04
Mobilization
Crews and materials are scheduled. Work typically begins within 2–4 weeks.
05
PM Assigned
A dedicated project manager is your single point of contact through completion.
06
Installation
Factory-trained crews install to manufacturer specs with a 3rd-party safety company on site.
07
Final Inspection
We inspect the finished roof before handover. Issues get fixed before we leave.
08
Warranty Issued
Manufacturer NDL warranty and our 2-year workmanship warranty are issued.
Key Benefits
Modified bitumen (mod bit) roofing combines the proven performance of built-up roofing with modern polymer technology. Available in hot-applied and cold-process configurations, mod bit systems provide excellent waterproofing, tear resistance, and multi-layer protection for commercial flat roofs. As a Garland-certified installer, we deliver mod bit systems built for long-term performance.
Multi-Layer Protection
Multiple plies of reinforced membrane create a robust, redundant waterproofing system.
Hot and Cold Options
Available in hot-applied and cold-process configurations for different site and safety requirements.
Tear and Puncture Resistant
Polyester and fiberglass reinforcement provide excellent resistance to physical damage.
Proven Track Record
Modified bitumen systems have 40+ years of documented commercial roofing performance.
We've done this before
Over two decades of commercial roofing projects across 45 states — retail centers, warehouses, industrial facilities, and everything in between.
View Our WorkAre we qualified for something this big?
We're not a local crew taking on something new. This is what we do — at scale, nationwide, with the certifications and workforce to back it up.
500+
Field Employees
20+
Years in Business
45
States Served
2yr
Workmanship Warranty
What happens if something goes wrong?
Every project is backed by manufacturer warranties and our own workmanship guarantee. If there's a problem, your dedicated project manager is the first call — not a call center.
NDL Manufacturer
Up to 20 Years
10, 15, and 20-year No Dollar Limit options on single ply systems and coatings.
Material
20 Years
Manufacturer-backed material warranty on all single ply installations.
Workmanship
2 Years
Every full replacement includes a 2-year workmanship warranty. Repairs: 90 days to 1 year.
Ready to talk about your project?
Get a ballpark estimate in minutes or reach out directly — we'll get back to you the same day.