Modified bitumen roofing is a close relative of built-up roofing, with layers stacked over the roof deck for combined waterproofing, insulation value, and weather protection. What sets mod bit apart is the polymer content in the membrane, which gives the asphalt a flexibility that plain asphalt never had. The system has more than fifty years of field history on flat roof and low slope projects.
DBM Roofing has installed and repaired modified bitumen systems across Southeast Georgia and the South Carolina Low Country for over a decade. A full modified bitumen roofing system from our team includes insulation, a base sheet, modified plies, the cap membrane, adhesive, and surfacing. Each layer does a specific job, and the finished roof holds up to standing water, UV exposure, and the foot traffic that comes with rooftop HVAC equipment.
Building owners across the region pick this roofing system for a handful of practical reasons.
Savannah summers run hot and humid, and hurricane season brings extreme weather conditions that put every flat or low slope roof to the test. Heat softens asphalt, salt air corrodes fasteners, and heavy rainfall finds any weakness in a seam. Modified bitumen handles all three when the system is specified and installed for this climate.
The polymer content holds the membrane together at temperatures that would age a conventional asphalt roof prematurely. Multiple plies give the roof a backup layer if the surface takes damage. Properly detailed drains and scuppers move water off the roof before it has time to sit. Those choices come down to installation quality, which is why the contractor matters as much as the material on any commercial roof.
10+ Years of Experience
DBM Roofing brings over a decade of hands-on modified bitumen installation and repair work across Georgia and South Carolina.
Certified Roofing Contractors
Our team includes certified experts trained to meet the highest standards in the roofing industry, including GAF Master Elite credentials.
Emergency Roof Repair Services
When storm damage hits, DBM Roofing responds in a timely manner to protect your property from further harm.
Clear, Honest Pricing
We provide straightforward estimates at competitive prices with no hidden fees, so you know exactly what to expect before work begins.
Superior Customer Service
From the first call to the final inspection, we deliver friendly service and keep you informed at every stage of the job.
Long-Term Roofing Solutions
Every bitumen roofing system we install is backed by manufacturer warranties and our own commitment to quality workmanship.
DBM Roofing serves business owners and commercial customers throughout Southeast Georgia and the South Carolina Low Country, including Savannah, Richmond Hill, Statesboro, Brunswick, Hinesville, Metter, Douglas, Mount Pleasant, and North Charleston.
If your building needs a new modified bitumen roof, a repair to an existing one, or a second opinion on a quote you already have, our team will inspect the roof, explain your options in plain language, and give you an honest number at no charge.
Call us or fill out the form below to get started with a roofing contractor you can trust.
Most systems perform for 15 to 20 years, and a well-maintained roof with quality surfacing can run past that. Service life depends on installation quality, drainage, and how much foot traffic the roof sees.
Built-up roofing alternates layers of hot asphalt and reinforcing felt built up on site. Modified bitumen uses factory-produced membrane rolls with polymer already blended into the asphalt, which speeds up installation and adds flexibility.
Sometimes. If the existing roof is sound, dry, and within local code limits on the number of layers, a recover is possible. We check moisture content in the insulation before recommending it, since trapped moisture will shorten the life of the new system.
Yes. Homes with flat or low slope sections, porch roofs, or additions do well with mod bit. It is one of the more affordable options for small residential low slope areas.
Pricing depends on square footage, tear-off requirements, insulation, deck condition, and the installation method. We provide an itemized estimate after inspecting the roof so there are no surprises once work begins.
