If you’re installing or replacing your roof, you know how important your choice of roofing material is. It affects the lifespan and cost of your roof, so it’s essential that you take the time to find the right roofing material for your needs.
Asphalt shingle roofing is one of the most popular options on the market, and with good reason. However, a proper installation is vital to get the most out of your Atlanta, GA, roof, which is why you need a contractor like GAF-certified Douglas Construction on your side.
Asphalt shingles are made from a fiberglass mat covered in asphalt. This mat then gets another coating of mineral granules, which influence the color and life expectancy of the shingle. The higher the mineral grade, the more durable the shingles and the longer your roof will protect you from the elements.
All asphalt shingles contain the same core components. However, they can vary in style and installation method. Knowing the differences can help you pick the right one for your home.
These shingles contain a single layer of asphalt that’s cut into strips and installed on your roof. They’re the most basic type of shingle, which makes them affordable and easy to install. They’re also lightweight, which can be a downside in Atlanta’s strong winds.
If you think of asphalt shingles, chances are you’ll picture these. These shingles contain two or more asphalt layers, which gives them a textured and varied appearance. They’re more durable than 3-tab shingles due to their multiple layers and are versatile enough to increase any home’s curb appeal.
Luxury shingles are the closest in appearance to traditional slate or shake shingles. They contain multiple layers of laminated asphalt, giving them excellent durability and versatility.
Due to the multiple layers, premium shingles weigh double the amount of a 3-tab shingle, which is an important consideration when using them in a new roof installation. However, the extra weight also makes them more wind-resistant, and their lifespan of 30 years reflects that added advantage.
How can a shingle calculator help estimate the cost of shingles for my roof?
A shingle calculator can be a helpful tool for estimating the total cost of shingles for your roofing project by providing an accurate calculation of how many shingles you’ll need. Here’s how it works:
By using a shingle calculator, you can quickly determine how much you’ll spend on shingles for your roof, helping you budget accurately for the project. Keep in mind that this is an estimate, and final costs may vary based on supplier prices, delivery fees, and additional roofing services.
Use our free and easy to use shingle calculator to get an estimate for a complete roof replacement by our team at Douglas Construction.
What's the difference between architectural and 3-tab shingles?
Architectural shingles (also called dimensional or laminate shingles) are built from multiple layers fused together, giving them a thicker, textured, more dimensional look that mimics wood shake or slate. 3-tab shingles are a single, flat layer with a simpler, uniform appearance. Beyond looks, architectural shingles are generally heavier, more impact and wind resistant, and come with longer manufacturer warranties, often 30 years or more compared to 20 years for 3-tab. Most Georgia homeowners choose architectural shingles today for the added durability against the state's frequent storms, though 3-tab shingles remain a lower-cost option for homeowners on a tighter budget.
How long do shingle roofs last in Georgia?
In Georgia, a properly installed asphalt shingle roof typically lasts 20 to 30 years for architectural shingles and 15 to 20 years for 3-tab shingles, though actual lifespan depends heavily on local conditions. Georgia's combination of intense summer heat, high humidity, and frequent severe thunderstorms and hail can shorten a shingle roof's life faster than in milder climates. Proper attic ventilation, regular inspections, and prompt repair of storm damage all help a shingle roof reach the higher end of its expected lifespan.
Can new shingles be installed over an existing shingle roof?
In many cases, building codes allow one layer of new shingles to be installed over an existing layer, a practice known as roofing over. However, Douglas Construction generally doesn't recommend it. Roofing over hides the roof deck and any underlying damage, such as rot or soft spots, adds extra weight to the structure, and can shorten the lifespan of the new shingles since they aren't laying on a flat, solid surface. It can also void some manufacturer warranties. A full tear-off gives our team a chance to inspect the deck, fix any hidden problems, and install the new shingles properly for the longest possible lifespan.
What causes shingles to curl, crack, or lose granules?
Shingle curling and cracking are usually signs of age and prolonged sun and heat exposure, which dry out the asphalt over time. Poor attic ventilation makes this worse by trapping heat and moisture underneath the roof deck, accelerating wear from below. Granule loss often shows up after hail impacts or simply as a shingle nears the end of its useful life, and it's a warning sign worth taking seriously since those granules protect the asphalt layer underneath from UV damage. If you're noticing any of these signs, it's a good idea to schedule a free roof inspection so we can tell you whether a repair or a full replacement makes more sense.
Are architectural shingles worth the extra cost compared to 3-tab shingles?
For most Georgia homeowners, yes. Architectural shingles typically cost more upfront than 3-tab shingles, but they offer better wind resistance, a longer manufacturer warranty, and a richer, more dimensional look that tends to boost curb appeal and resale value. Given how often Georgia sees high winds and hail, the added durability alone often justifies the price difference over the life of the roof. 3-tab shingles still make sense for homeowners prioritizing the lowest upfront cost, but architectural shingles generally deliver more value per dollar over time.
