What Is Asphalt Shingle Roofing?
The Most Common Roof in Metro Atlanta, and Why
Drive through Decatur, Sandy Springs, or Marietta and most of what you see overhead is asphalt shingle roofing. There is a practical reason for that. Georgia summers, pop-up thunderstorms, and heavy tree cover all put real stress on a roof, and asphalt handles that mix at a price most homeowners can actually plan around.
An asphalt shingle is built on a fiberglass mat, coated in asphalt, and surfaced with mineral granules that shed water and shield the shingle from UV exposure. Residential shingles fall into three tiers: three-tab strip shingles, architectural shingles that bond two layers for depth, and luxury shingles built from three layers to replicate cedar shake or slate. With sound installation and working attic ventilation, an asphalt roof in this climate generally serves 20 to 30 years.
KTM Roofing has been installing shingle roofing across the Atlanta metro since 1984, from Alpharetta and Peachtree Corners down through Stockbridge.
Asphalt Shingle Options We Install
CertainTeed and GAF Products for Atlanta Homes
We install across the CertainTeed and GAF residential lines, from everyday architectural shingles to luxury profiles. Availability and color ranges shift by region and by year, so your consultant brings current samples to the estimate.
CertainTeed Landmark Architectural shingle, dual-layer construction
Landmark is CertainTeed’s flagship architectural shingle and the one we install most often. Its two-piece laminated build produces the dimensional look of cedar shake, and it carries a UL Class A fire resistance rating along with UL 2218 Class 3 impact resistance. The Landmark PRO tier adds weight and CertainTeed’s Max Def color blends.
CertainTeed Presidential Shake TL Luxury triple-laminate shingle
Presidential Shake TL uses three laminated layers to build the depth and shadow lines of hand-split cedar. It fits Craftsman, Tudor, and custom homes where the architecture calls for a shake roof without cedar’s upkeep. Residential installations carry a lifetime limited transferable warranty from CertainTeed.
GAF Timberline HDZ GAF's best-selling residential shingle
Timberline HDZ is the current generation of the Timberline line, replacing the earlier Timberline HD. Its LayerLock design and wide nailing zone improve fastening accuracy during installation, and when paired with four qualifying GAF accessories it becomes eligible for GAF’s WindProven Limited Wind Warranty, which carries no maximum wind speed.
GAF Grand Sequoia Designer shingle with a wood-shake profile
Grand Sequoia uses oversized, irregular tabs to produce heavy shadow lines and the rugged texture of split shakes. Installed with the required underlayment, it carries a UL Class A fire resistance rating, which makes it a practical option for homes where real cedar is off the table.

Signs Your Asphalt Shingle Roof Needs Repair or Replacement
What to Look For After a Georgia Storm
Shingle roof repair costs far less than replacement when the problem gets caught early. Walk your property after a strong storm, look for these signs from the ground, and get the roof inspected before minor damage becomes an attic leak.
Asphalt Shingle Roofing FAQs
Common Questions from Atlanta Homeowners

Why We Install CertainTeed and GAF
Two Manufacturers, One Standard
We are an authorized installer for both. That means our crews train against each manufacturer’s current specifications, and we register your manufacturer warranty on your behalf once the project is closed out.
CertainTeed has manufactured building products for over a century, and its Landmark series has become a reference point for dimensional shingles. GAF, founded in 1886, describes itself as North America’s largest roofing manufacturer, and Timberline is its best-selling residential shingle line.
Carrying two manufacturers instead of one keeps the decision with you. If the color you want lives in a Max Def blend, we specify CertainTeed. If GAF’s wind warranty structure matters more, we build that system instead. Either way the installation follows manufacturer specification, because a warranty is only as good as the work behind it.
Why Choose KTM Roofing
Raising Roofing Standards in Atlanta Since 1984
Tim McLoughlin founded KTM Roofing in 1984, and it is still family run. Four decades in one market means our crews know how Atlanta’s tree canopy, humidity, and storm patterns actually affect a roof, and how local inspectors and HOAs expect the work documented.
We install across the full range of roofing materials, from asphalt shingles to slate, tile, wood shake, and metal. Nobody here has a reason to steer you toward one product. Our portfolio includes East Lake Golf Club, Decatur City Hall, and the Arthur M. Blank Family Foundation building, alongside homes throughout Alpharetta, Marietta, Sandy Springs, Decatur, Peachtree Corners, and Stockbridge.
You get a written estimate before anything begins, a crew that clears the site daily, and an invoice that comes after the work is done.


















