Modified Bitumen Roofing in Atlanta
15 Years Installing Roofs
Not selling quick fixes
Storm Damage Specialists
Handling claims for you
YOUR ROOF WON'T FIX ITSELF
BUT WE WILL
100% Free & No Obligation
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For more information about our services, or to get a free quote, give us contact us at:
Commercial
M
Marcus Bell
Marietta, GA
Chris came out the same day I called and actually got on the roof instead of just guessing from the driveway. The price was fair and the crew had the old shingles off quicker than I expected. They finished in one day and I only found one nail after they left, which is pretty good considering the mess a roof job makes.
L
Lauren Whitaker
Decatur, GA
We had a small leak around one of the vents and thought it might turn into a big repair. They showed us photos of what was going on and didn’t try to sell us a whole roof, which I appreciated. Repair was done fast and we haven’t had any issues since the last heavy rain.
D
Derrick Harris
Sandy Springs, GA
I got three quotes and this one was not the cheapest, but it felt the most straight forward. No scare tactics, just explained the shingles, warranty, and what would happen if they found bad decking. The crew worked hard and cleaned up too.
A Multi-Ply System With a Track Record in Georgia's Climate
Modified bitumen has been a dependable flat roofing solution since the 1970s, with a strong performance history in hot, humid climates like Atlanta's. Built from asphalt reinforced with APP or SBS polymer modifiers, these systems deliver solid puncture resistance, thermal flexibility, and UV stability. Peach Street Roofing installs modified bitumen throughout the Atlanta metro where a layered, field-proven system is the priority.
Layered Redundancy Built In: Multi-ply construction gives the roof a margin against localized failure. If the surface layer is compromised, the base ply continues protecting the building while targeted repairs are completed.
Stable Across Atlanta's Seasonal Range: SBS systems stay flexible in cooler temperatures while APP resists softening in summer heat — both performing reliably through Georgia's seasonal swings without seam cracking or UV deformation.
Field-Repairable With Compatible Materials: Modified bitumen is one of the most straightforward commercial systems to repair correctly — localized damage addressed with matching material using torch or cold-adhesive methods, without disturbing surrounding areas.
Modified Bitumen Repair
Blistering, open lap seams, and surface cracking are the most common issues on aging modified bitumen roofs. We remove and replace damaged sections, ensure full adhesion at all edges, and verify that drainage conditions are not driving the recurring problem.
Modified Bitumen Installation
We install both APP torch-applied and SBS cold-applied systems based on building type, code requirements, and owner preference. Every job includes a drainage review, correct base sheet attachment, and cap sheet installation with fully lapped and sealed seams throughout.
System Types
APP Torch-Applied
APP sheets are heat-fused to the substrate with an open-flame torch, creating a fully adhered membrane with no solvent odors and strong UV and thermal resistance — a solid choice for Atlanta's sustained solar exposure.
SBS Cold-Applied
SBS systems use adhesive rather than open flame, making them appropriate for occupied buildings where torch work is restricted by fire code or tenant requirements. The rubber-modified composition provides flexibility and solid resistance to foot traffic.
Cap Sheet Surfacing
Cap sheets are available with granule surfaces for UV protection and cool roof performance, or smooth surfaces for coatings. We match the spec to the building's energy goals, warranty requirements, and expected maintenance access.
Why Choose Peach Street Roofing Service?
When you partner with Peach Street Roofing, you're choosing an Atlanta roofing contractor built on straightforward communication. We do business the right way: upfront, honest, and transparent. It starts with a free, no-pressure roof inspection. We provide a clear assessment and a detailed quote—no surprises. Call (678) 770-8171 to schedule your consultation today.
Frequently Asked
Questions
We've provided answers to many of our most frequently asked questions. Have a different question for our team? We're happy to help! Just send us an email at:
How long does a modified bitumen roof last in Georgia?
A properly installed modified bitumen system in Georgia typically lasts 20 to 30 years, depending on the number of plies, membrane quality, and drainage performance over its service life. The multi-ply construction is one of the system's core advantages — if the top layer sustains localized damage from hail, debris, or foot traffic, the base ply continues to protect the building while a targeted repair is completed. That redundancy makes it a practical choice for buildings with active rooftop equipment.
Is modified bitumen a good choice for commercial buildings with heavy HVAC equipment on the roof?
Yes — it's one of the better flat roofing specifications for buildings with significant rooftop mechanical equipment. The multi-ply construction and thicker cap sheet provide better puncture resistance than single-ply systems when service technicians are regularly accessing HVAC units. The surface handles foot traffic more forgivingly than TPO, which requires walkway pads in high-traffic zones. For Atlanta commercial properties with multiple rooftop HVAC systems and frequent maintenance access, modified bitumen deserves serious consideration.
What is the difference between APP and SBS modified bitumen?
APP (atactic polypropylene) and SBS (styrene-butadiene-styrene) are the two polymer types used to modify bitumen into a flexible, durable membrane. APP is torch-applied and performs well under sustained heat and UV exposure — qualities that suit Atlanta's high solar load. SBS is rubber-modified, stays flexible in cooler temperatures, and is installed with cold adhesive, making it the appropriate choice for occupied commercial buildings where open-flame torch work is restricted by fire code or tenant requirements.