Durable Performance. Seamless Protection.
Stop Leaks on Flat Roofs. Ensure Business Continuity
Don't Let Flat Roof Problems
Impact Your Business.
That recurring ponding water. That blistered membrane surface. The worry of expensive water damage threatening your equipment or inventory.
Modified Bitumen (Mod Bit) is a highly durable, asphalt-based roofing system specifically designed for low-slope or flat commercial buildings. It provides excellent waterproofing, resists high foot traffic, and offers flexibility to handle building movement and temperature shifts.
At Achilles Roofing & Exteriors, we specialize in the meticulous installation and repair of Mod Bit systems. Whether it’s a cold-applied, hot-applied, or torch-applied (where permitted) method, we ensure a seamless, multi-ply barrier that protects your assets and your operational schedule.
Key Benefit List
- High Durability Against Foot Traffic and Scrapes
- Flexibility to Withstand Temperature Extremes
- Cost-Effective with Proven Longevity
- Energy-Saving White Granule Options Available
- 5-Year Workmanship Warranty on Installation
System Options We Provide
Customized Solutions for Every Commercial Roof.
Installation involving a base sheet followed by a cap sheet (granule or smooth surface) for robust, multi-layer protection.
A method utilizing a flame to fuse the sheets together, creating a truly monolithic (seamless) water barrier (where fire codes allow).
Installation using adhesive instead of heat, preferred for buildings where heat application poses a risk or for specific repair applications.
Targeted fixing of blisters, tears, or splits in the existing membrane, followed by proper coating and sealing.
Application of reflective white acrylic or silicone coatings over the Mod Bit to reduce surface temperature and improve energy efficiency.
Reinforcement and sealing of all seams, vents, curbs, and perimeter edges, which are the most failure-prone areas.
Our Proven Installation Process
Stress-Free Commercial Roofing, Step-by-Step.
We inspect the existing roof deck, discuss your budget and system requirements, and provide a fixed project cost.
We establish a clear work zone, adhere to OSHA standards, and schedule work to avoid disrupting your tenants or business hours.
Deck Prep
The old system is removed down to the deck. We inspect and replace any damaged insulation or substrate.
Installation
The base sheet and subsequent modified bitumen cap sheet are installed, ensuring correct adhesion and fully watertight seams.
Quality Check
We perform a final inspection, confirm all flashing and penetration seals are secure, and provide warranty documentation.
See Our Work:
Expert Commercial Modified Bitumen Roofing in Action.
Invest in Durability
and Peace of Mind.
Secure Your Commercial Property's Future.
Protect your inventory and operations with a robust, reliable Modified Bitumen roof. Contact Achilles Roofing & Exteriors now for a free, no-obligation assessment and quote.
I would like to post a positive review for Achilles Roofing & Exteriors team. It is second time we are doing minor work on our house and I'm very satisfied with quality of work, dedication and enormous progress on a transformation they made in both times. I do not foresee any roof repairs on my house in future but if you are looking for someone trustworthy, punctual, caring to do your roof work, I would totally trust them.
Achilles Roofing & Exteriors did an exceptional job with our residential roofing project, providing top-notch roof repair services and professional work done at a reasonable cost. Their experienced roofer team handled the quick roofing service with care and attention to detail, ensuring our new roof exceeded our expectations.
We really needed a new roof and we got 5 different quotes from 5 companies and Achilles gave us the best quote by thousands of dollars! Very professional work and service and very flexible to help meet our busy schedules.I would highly recommend this company to anybody who needs roofing services.
Great price · $2,000–4,000
To cool down my attic, I decided to install a solar attic fan. I got proposals from four different vendors and evaluated them based on customer service, experience, implementation, and price. Achilles Roofing & Exteriors, led by Ahmad Faiz, was the standout choice.
Great price · $10,000–12,000
Ahmad is very professional. The process was very simple. Price was affordable and the quality of work is amazing. Thank you for the new replacement and previous rook repairs.
Quick turnaround on some roof repairs we needed for the sale of our home. Everything was documented on the invoice and with photos. Very professional.
Great job on my Atrium cover. Used them before for my roof. Well done and very reasonable.
Frequently Asked Questions
How long does a Mod Bit roof typically last?
With proper maintenance and professional installation, a modified bitumen system typically lasts 15 to 20 years.
Is this system suitable for a true flat roof?
Yes. Mod Bit is designed for low-slope roofs (slopes between 1/4″ and 3″ per foot) where it manages water effectively and resists ponding.
Does the type of installation matter (torch vs. cold)?
Yes. The method impacts installation time and safety. We choose the best technique based on fire codes and building structure, always aiming for durability.
Can you install Mod Bit over an existing roof?
In some cases, yes, if the existing roof is clean, sound, and dry. We always assess the current system to determine if a tear-off is necessary for long-term reliability.
Is the installation covered by a warranty?
Yes. You receive our separate 5-year workmanship warranty covering our installation service.