What the Atlanta Cool Roof Ordinance Means for Your Next Roof 

The Atlanta Cool Roof Ordinance, Deconstructed

Atlanta passed a cool roof ordinance back in June 2025, and a lot of people are still scratching their heads about what it really changes. If your home is in Sandy Springs, Roswell, Alpharetta, Milton, or Johns Creek, and a roof replacement is anywhere on your radar over the next few years, this is worth a few minutes of your time. The city wants roofs that bounce more sunlight back up, stay cooler when summer hits, and help take some bite out of the urban heat issue that keeps getting worse.

We’ve fielded questions about this ordinance from customers nearly every week since the news broke. So here’s the scoop.

What Is the Atlanta Cool Roof Ordinance?

The city council passed the Atlanta Cool Roof Ordinance in June of last year. It establishes minimum reflectivity standards for roofs in new construction and large roof replacements within Atlanta city limits. They measure it with something called the solar reflectance index, or SRI. It’s a number that shows how much sunlight a roof reflects versus how much it absorbs as heat.

The basics of this ordinance: low-slope roofs (the flatter ones you see on commercial buildings and a handful of newer homes) have to clear a higher SRI bar than steep-slope residential roofs. Solar panels, green roofs, and even some historic properties get exemptions. And none of this kicks in all at once, these standards phase in over time so builders and roofers have room to adjust. 

Georgia Tech researchers crunched the numbers on this. They estimated that if reflective roof materials were adopted broadly across Atlanta, peak summer temperatures could drop a few degrees even in the hottest neighborhoods. While that may not sound like much, on a 97-degree August afternoon, two or three degrees is the line between miserable and dangerous.

Does the Ordinance Apply to North Atlanta Homes Only?

This is the question we get most. Short answer? Technically, no, not directly.

The ordinance covers the City of Atlanta’s municipal boundaries and nothing else. Sandy Springs, Roswell, Alpharetta, Milton, and Johns Creek are all municipalities with their own building codes, and none have rolled out matching rules so far. Which means that if your house sits in one of those cities, nothing legally forces you to install energy-efficient roof shingles or anything else covered by the Atlanta ordinance.

But we’d be selling you short if we stopped there. Metro Atlanta cities have a habit of following each other on building codes, especially environmental ones, so don’t be shocked if one of the North Atlanta cities passes something similar in the next few years. Resale value matters too. Buyers care about energy efficiency more than they used to, and a reflective roof is something you can actually point to on a listing. And honestly, the weather doesn’t care about city lines. A cool roof works the same in Roswell as it does in Midtown. 

Choosing Energy-Efficient Roofing for Your Home

If you’re sold and starting to look at a new roof, here’s what matters. ENERGY STAR-rated shingles are a solid place to start. The Cool Roof Rating Council also keeps a database of products with verified SRI numbers, which is worth a look. 

Color is a bigger deal than people assume. Lighter shades reflect more sunlight by nature, but manufacturers have gotten smart about engineering darker shingles with granules that bounce infrared light while still looking like a normal roof. So a white roof in Milton isn’t your only option for getting the benefit.

Brands we regularly put on roofs with strong cool roof products: GAF Timberline CS, CertainTeed Landmark Solaris, and Owens Corning Duration Premium COOL. Expect to pay 5-15% more than you would for standard architectural shingles. Most homeowners are fine with that gap once the long-term math gets laid out for them.

One thing worth flagging though. A reflective roof does its best work as part of a whole system; attic ventilation, insulation, and the actual quality of installation all factor in. Slapping a high-SRI shingle on top of a poorly ventilated attic is like buying a sports car and skipping every oil change. You’ll get some of what you paid for. Not all of it.

How a Reflective Roof Actually Works

Your standard asphalt shingle roof, what most homes in North Atlanta have, absorbs a serious amount of solar energy. On a hot summer day, the surface of a dark roof can climb to 150°F or higher. That heat has nowhere to go but down, into your attic, where your insulation does its best, and your AC ends up working overtime to keep up.

Reflective roof shingles (which are also called solar reflective shingles or heat reflective shingles, depending on who you ask) use granules that reflect a larger portion of that sunlight back into the atmosphere. Reflective roof coatings do something similar and can be applied over certain existing roofs. Their SRI numbers come in well above what standard shingles hit, which is just the technical way of saying they don’t get as hot.

What we typically see on homes around here with this type of roofing is attic temps dropping 20 to 40°F at the peak of summer. Cooling bills coming down somewhere in the 10-20% range, though that’s a moving target depending on insulation and shade. The shingles themselves tend to hold up longer too because they’re not baking as hard. And there’s less heat radiating off the roof into the yard and patio, which you actually notice when you’re outside. You 

Now, those savings won’t pay for the whole roof. Let’s not oversell it. But spread across the 20 to 30 years a roof is supposed to last, it adds up, and it’s a decent bonus on top of just being more comfortable inside.

Next Steps in North Atlanta

If your roof is aging and you’re replacing it soon anyway, this is an easy call. The money’s already going out the door. Bumping up to reflective shingles is a small slice of the total cost, and you’re locked into the benefits for the whole life of the roof.

If your roof still has plenty of years in it, it’s less of a rush. Reflective roof coatings work for some roof types, though traditional asphalt shingles aren’t really one of them. That’s a conversation worth having about what makes sense for your specific situation.

Either way, if you’re somewhere in North Atlanta, whether that be Sandy Springs, Roswell, Alpharetta, Milton, Johns Creek, or nearby, and you want a real answer on whether a cool roof is worth it for your house, reach out to us at Bumble Roofing of North Atlanta. We’ll go through your options, give you actual numbers, and tell you what you can expect to save!