RoofViews

In Your Community

Helping to Mitigate Urban Heat Islands with GAF StreetBond® Pavement Coatings

By Annie Crawford

July 11, 2023

GAF StreetBond® pavement coating in green, white, and blue brightens parking area and diverts heat.

Around the globe, excess heat collects in urban areas and can contribute to increased heat-related death and illness, diminished quality of life, and reduced economic opportunities. Such areas are known as "urban heat islands." Fortunately, cooling strategies are now available and being used in initiatives like the GAF Cool Community project to help mitigate urban heat island effects. Such cooling strategies are supported by products such as such as GAF StreetBond® pavement coatings with Invisible Shade™ — named by TIME magazine as one of its Best Inventions of 2022.

Understanding Heat Islands

You can envision urban heat islands as heat-saturated sponges spread out across vast, shimmering urban spaces. These "islands" tend to have minimal shady vegetation, so their blacktop and hard surfaces — such as pavements, parking lots, concrete recreation areas, and roofs — absorb and retain the sun's heat well into the evening. HEAT.gov explains that temperatures in urban heat islands can be 15–20°F hotter than in equivalent vegetated areas. In technical terms, darker surfaces have a low albedo effect — that is, the ability to reflect and diffuse the sun's rays back to the upper atmosphere. This means highly reflective, snow-covered regions such as the Arctic have high albedo, while dark, tarmac-covered cities have low albedo, which leads to increased heat retention.

Densely packed buildings compound a low albedo effect by preventing cooling breezes from lowering temperatures. And to top it all off, heat islands can trap waste heat from cars, air conditioners, and other heat-emitting devices — exacerbating the effects. In terms of detrimental environmental impacts, this is the perfect, overheated, storm.

L.A.'s Pacoima neighborhood is one example of a community hit hard by heat. Undoubtedly a true urban heat island, it is consistently one of the city's hottest areas: one summer afternoon, Bloomberg News reported a pavement temperature of 127°F at noon — which rose to 141.8°F just one hour later. In addition, many of Pacoima's residents are in lower-income brackets and living in spaces that have not been fully optimized to mitigate heat island effects. According to Miguel Angel Luna, president of Urban Semillas, Pacoima residents are right "on the front line of climate change." Urban Semillas is an L.A.-based social and environmental justice consultancy working with grassroots organizations such as Pacoima Beautiful on the GAF Cool Community Project in the area.

Breaking Down Why Urban Heat Islands Matter

More than 80% of Americans live in urban areas, where urban heat islands are most prevalent. Extreme heat has been the greatest weather-related cause of death in the US for the last 30 years, according to Forbes. Roughly 12,000 Americans died prematurely from extreme heat between 2010 and 2020, with Native American and Black communities disproportionately affected.

And within those urban areas, it is the lower-income neighborhoods — often with fewer trees or other cooling interventions — that tend to be hardest hit. For example, Bloomberg noted that during days of extreme temperatures, Pacoima had seven times the number of excess heat emergency room visits (19,000 between 2009 and 2018) compared with nearby Santa Monica in L.A., an affluent community of similar size.

Economic sectors, such as tourism and local business, also feel the urban heat island effect. Pacoima food truck vendor Jennifer Ramirez can't start work until outdoor and street temperatures have cooled slightly. Otherwise, she explained to Bloomberg News, her food truck generator could blow out combating the oppressive daytime heat. As Melanie Torres of Pacoima Beautiful observes, Pacoima's built-up, sparsely vegetated streets and parks don't "give us the chance to experience fresh weather, or cool weather at all."

Shifting from Urban Heat Islands to Cool Communities

The GAF Cool Community project in Pacoima addresses the complex issue of urban heating with a beautifully simple solution. Take a hot, sun-exposed community with an abundance of heat-retaining hard surfaces. Then, apply colorful, solar-reflective coating to its streets and public hardscaping. The result? Cooler pavement temperatures.

Community applying StreetBond

The solar reflective coating — StreetBond pavement coatings with Invisible Shade™ technology — can help reduce surface temperatures by between 10°–12°F in the heat of the day. This could ultimately reduce ambient temperatures around Pacoima, explained Jeff Terry, Vice President of Sustainability at GAF, to Forbes.

Making Progress on Cooling Pacoima

Over 700,000 square feet have been coated with StreetBond® solar-reflective epoxy acrylic coating over a 10-block area. An attractive, colorful mural of solar-reflective materials covers the park area, and blue-and-white StreetBond® brightens the public basketball court. The formerly dark streets are now a cool grey-blue.

StreetBond on a basketball court

Over 12 months, the project will track pavement and air temperatures using sensors, satellite technology, and drones. The second project phase may also include cool roofs. The goal of the project is to determine whether these cooling strategies can help reduce overall ambient temperatures outdoors and offset high indoor temperatures caused by a lack of air conditioning in the Pacoima community.

GAF and its partners aim to improve the lives of the roughly 2,000 people in the half-mile project range, plus have the solutions — including what Jeff Terry sees as a "complete community approach" that involves residents and local organizations — which serves as a model for cities around the world. In addition to urban beautification and heat reduction, GAF StreetBond® can help preserve pavement. In turn, longer-lasting pavement can save cities time, money, and resources and gives them another tool to help mitigate the impacts of climate change.

Starting at Home

Whether urban or rural, all communities can use technology to help reduce indoor and outdoor temperatures. Some cooling strategies that can be effective across cities or in your own home include:

  • Cool surfaces: Surfaces treated with solar-reflective coatings can help reduce heat absorption and lower street temperatures. Plus, products such as StreetBond® come in a range of colors to beautify urban areas.
  • Solar shingles: Business and residential roofs can benefit from solar shingles such as the Timberline Solar™ roofing system. Solar shingles generate solar energy, helping to reduce reliance on overburdened energy grids and lower utility bills — all while maintaining the streamlined look of an architectural shingle roof.*
  • Cool roofs: Solar reflective shingles like Timberline® CS Shingles may save homeowners an average of 7%–15% on their total cooling costs.** This cooling technology minimizes a building's solar heat gain by reflecting incoming sun rays and re-emitting the absorbed energy.

Ready to get started in your neighborhood? Check out the inspiring community improvement projects at streetbond.com. (A division of GAF, StreetBond® offers the same quality and reliability customers have come to rely on from North America's largest roofing and waterproofing manufacturer.)


* Savings will vary and are not guaranteed. Incentives and eligibility requirements vary and availability is not guaranteed.

** Potential for savings depends on various factors including, but not limited to, climate zone, utility rates, location, and HVAC equipment efficiency.

About the Author

Annie Crawford is a freelance writer in Oakland, CA, covering travel, style, and home improvement. Find more of her work at annielcrawford.com.

Related Articles

A house with a damaged roof.
Your Home

Hurricane Roofing: How to Prepare Your Roof for Hurricanes

While you can't control the weather, you can minimize its impact on your home. If you live in a hurricane-prone area, you can take steps before and after a storm to protect your property from damage. For instance, choosing quality hurricane roofing materials and completing proper roof maintenance can help reduce roof damage.Here's everything you need to know to prepare your roof for hurricane season.Types of Hurricane Roofing MaterialsThe Saffir-Simpson Hurricane Wind Scale classifies hurricane categories based on their highest approximate wind speeds:Category 1: 74 to 95 mph windsCategory 2: 96 to 110 mph windsCategory 3: 111 to 129 mph windsCategory 4: 130 to 156 mph windsCategory 5: 157 mph or higher windsWith this in mind, specific roofing materials are designed to resist high winds and protect against damage from debris.Impact-Resistant ShinglesImpact-resistant shingles meet the UL 2218 impact test standards, defending your roof—and home—against the natural elements. They can cost more than typical asphalt shingles but can be worth the expense if you live in a hurricane-prone region.Metal RoofingMetal roofing can resist heavy impacts and withstand high winds, making it one of the best roofing systems for hurricanes. Some metal roofs can withstand wind speeds up to 150 mph, covering you even during Category 4 hurricanes.Synthetic RoofingSynthetic roofing materials resist wind, water, and fire damage, making them beneficial during hurricanes. Since they use man-made materials, they don't rely on a natural build. Instead, they're built with damage-resistant features in mind while mimicking the appearance of natural materials. These composite roofing shingles are typically made from recycled plastic, asphalt, and other products.GAF Hurricane Roofing SolutionsYour choice of roofing materials can limit roof damage. Some products are manufactured specially to withstand the harshest weather conditions and keep everyone in your home safe. Here are a few GAF products developed with harsh weather in mind.GAF Timberline® AS II ShinglesTimberline® AS II Shingles are created with proprietary SBS-modified asphalt that's flexible to bolster impact resistance. Impact resistant shingles can be stronger than other non-impact resistant asphalt shingles, and since they pass the UL 2218 impact-resistance test, you could potentially qualify for insurance discounts. Timberline® AS II shingles come with a 25-year StainGuard Plus™ Algae Protection Limited Warranty that protects against algae discoloration. Plus, when installed with four qualifying GAF accessories, they're eligible for the WindProven™ Limited Wind Warranty, which provides infinite wind speed protection.GAF Grand Sequoia® AS ShinglesGrand Sequoia® AS Shingles also pass the UL 2218 Class 4 test, as they're built with the same SBS-modified asphalt formula. The DuraGrip™ Adhesive seals shingles tightly to prevent wind blow-off, and the shingles are warrantied against winds up to 130 mph, covering Category 4 hurricane winds.GAF TimberSteelTM Premium Metal Roofing SystemThe GAF TimberSteel™ Premium Metal Roofing System gives your home the hurricane-resistant capabilities of metal roofing at an affordable price. The system can help keep your home safe against high winds and rain through its multiple layers of protection. It's designed to provide a beautiful look with GALVALUME® steel that features top and bottom interlocking to keep everything tight and leakproof.Hurricane-Resistant Roof DesignsMore goes into building a hurricane-resistant roof than just the material. The roof shape and slope can provide additional resistance.Hip roofs can best resist hurricane weather. Although they're typically costlier to build than gable roofs, a hip roof's four slopes provide better wind uplift resistance than a gable roof's two slopes. As the wind flows around the roof causing pressure differences, the additional slopes are better equipped to handle the wind flow.A 30-degree roof slope also provides the best protection against high winds, preventing wind from easily lifting the roof.Installation Quality Plays an Important RoleRoofing contractors must follow proper techniques when preparing or installing a roof for hurricane season. This often means using nails instead of staples to install shingles since nails better attach the shingle to the roof and create fewer holes for water to get in. Likewise, properly installed flashing—without gaps in the intersection—helps keep heavy rainfall from entering the home.Additionally, a contractor can install hurricane clips to ready a roof for harsh weather. These steel plates secure and connect roof trusses to the home's wall structure, keeping the roof attached during high winds. In states like Florida, new homes are required to have hurricane clips installed.Preparing Your Roof for Hurricane SeasonThe Atlantic hurricane season starts June 1 and lasts until November 30, reaching its peak in September.Months before hurricane season approaches, schedule a professional roof inspection from a trusted contractor to ensure your roof is up-to-date and isn't damaged. This gives you sufficient time to complete any maintenance and repairs before the season arrives, as contractors might be busy once it starts.Reinforce Weakened AreasA weak spot in your roofing system can lead to further damage and compromise the rest of the roof's integrity. Even a small opening in a shingle can cause serious water damage during a rainstorm. Your roofing contractor can fix or replace loose or torn shingles, repair broken flashing or fascia, clean debris from your roof, and clear out your gutters.Mitigate Potential Tree DamageSharp winds and storms can sometimes cause tree branches to break and fall on top of the roof, damaging shingles or other materials. So, trim nearby trees as part of your roof maintenance. Also, remove fallen leaves before and after storms. Leaves can clog gutters, preventing water from flowing off the roof during heavy rain.Schedule Post-Storm InspectionsRoofing maintenance after a storm is just as important as before a storm. If a hurricane damages your roof, find a company that handles storm damage roof repair. While you can try assessing any roof damage from the ground, a roofing contractor can accurately identify the damage extent and fix it. They can also help you with any insurance claims if your policy covers you for these circumstances.Protecting Your Roof from Hurricane DamageYou can take several proactive measures to minimize the impact of harsh weather on your roof. Choosing the right materials—and ensuring they're installed correctly—is paramount. Hire a GAF-certified roofing contractor*and enjoy peace of mind as the next storm approaches.FAQCan a roof be hurricane-proof?Due to the nature of hurricanes, no roof is 100% hurricane-proof. But wind- and moisture-resistant roofs perform the best during hurricanes. This is why it's important to choose quality products that will protect your home in the worst possible weather conditions.What is the best roof for a hurricane?The best roof for a hurricane is made with impact-resistant shingles or metal. These materials can handle impacts from heavy objects that may blow onto your roof during a hurricane. Metal roofing can generally handle higher hurricane winds better than typical singles.What type of roof would most likely be torn off in a hurricane?The worst-performing roofs during hurricanes are ones that have wood shingles or shakes. Wood isn't very moisture-resistant without additional coatings. Wood shingles and shakes are also lightweight, so sharp winds can easily lift them. Furthermore, wood isn't as strong as other materials, so it can become brittle when heavy objects land on it.What is the best roof for high-wind areas?Metal roofing is one of the best roofing systems for high-wind areas, as it's built to withstand wind speeds up to 130 to 150 mph. But the installation quality is just as important as the material—even the most robust materials may not stand well against high winds if they aren't correctly installed. Additionally, When installed with the required combination of GAF Accessories, Timberline® Shingles with LayerLock™ Technology are eligible for an industry first: a wind warranty with no maximum wind speed limitation.To ensure your roof is in good shape to protect your home this hurricane season, reach out to a contractor certified by GAF* in your area to schedule a roof inspection.*Contractors enrolled in GAF certification programs are not employees or agents of GAF, and GAF does not control or otherwise supervise these independent businesses. Contractors may receive benefits, such as loyalty rewards points and discounts on marketing tools from GAF for participating in the program and offering GAF enhanced warranties, which require the use of a minimum amount of GAF products. Your dealings with a Contractor, and any services they provide to you, are subject to the GAF Contractor Terms of Use.

By Authors Mark Soto

June 26, 2024

Group of Roofing Academy students speaking with Trevor Leeds of BYLTup
In Your Community

Roof Raiser: Trevor Leeds, Elevating the Roofing Industry

The roofing industry has long been a competitive space for contractors, but that healthy competition has helped drive innovation and lift up independently-owned businesses across the country. BYLTup, Inc. is one such business, and CEO Trevor Leeds is committed to elevating the greater roofing industry through everything his company does.After many years in roofing, Trevor partnered with his brother, Brady Woodside, in 2022 and co-found BYLTup, Inc. in Southern California. The pair started from scratch with a blank slate, allowing them to create a culture and brand experience that raises the industry bar, which is important to them.Trevor knew GAF would be a part of their success from the start. He experienced GAF-certified contractors'* support through his previous company and knew the organization's vision and innovation would be key to building the business.Enhancing Roofing Professionalism and SafetyTrevor is passionate about the roofing industry and believes everyone—from manufacturers and distributors to the contractors performing the installations—should work together to create a professional and positive customer experience. Even more importantly, Trevor advocates for the industry's employees and their experiences; safety is an area he wants more people to consider."We need to be making sure that we are taking care of employee safety," Trevor says. "Everyone should be focused on that. Everyone should be concerned about their employees going home safe and sound every single night. When an accident happens in the industry, it's devastating to the business owner and the individual, but it impacts the industry too. We all feel that in some form or fashion."Guiding the Next Generation through GAF Roofing AcademyTrevor's concern for employees and the industry's future led to his involvement in the GAF Roofing Academy. While he didn't have an immediate need for labor in his business, he recognized that taking action now could contribute to building a pipeline of skilled workers that would benefit the roofing industry as a whole.Trevor observed the pool of talent and skilled workers dwindling during his time in roofing. "You have the baby boomer generation that is retiring and a younger generation that wants to get into tech and doesn't want to get into the trades," he notes. "We've got to be able to hire and attract young talent back into the industry or we're all going to suffer."Training Students at the SoCal Roofing AcademyTrevor first learned about the GAF Roofing Academy at a regional conference and stepped up to assist. His company was involved in the first SoCal Roofing Academy, which had three tracks: residential roofing, commercial roofing, and sales training. BYLTup hosted the training's residential portion, and Trevor was impressed by the students' interest and engagement."I was blown away at how engaged they were. GAF had certainly done a very good job screening and prepping these individuals coming in, but they were green," he says. "The trainer was fantastic. The students were shingling after three days."Once the groups completed the tracks, they were brought back together for their graduation ceremony, which was a life-changing experience for many. "I realized that many of these people had probably never been recognized like this before," Trevor says. "They were very proud, holding their certificates and sending photos to their families."Making an Unexpected Hire at BYLTupJust before hosting the SoCal Roofing Academy, GAF Roofing Academy Operations Manager Erick Osuna reached out to Trevor and shared recent graduate Jose Navarro's resume. Jose had completed the commercial roofing training program and stood out to Erick, so he connected with Trevor about possibly hiring him."At that time, I wasn't looking for someone on the commercial roofing side. We weren't really expanding that crew, but we were looking for a production role," Trevor shares. "Long story short, we loved him. He was going to be a great fit for the company, and we hired him as our assistant production manager."Jose excelled on the job. BYLTup quickly moved him into a full production manager role, hiring an assistant to work with him. Trevor says Jose was a great hire. "He's young, he's hungry, he wants to learn. I've never seen another individual in the industry that just wants to learn roofing, and he's a sponge."Committing to Supporting GAF Roofing AcademyTrevor has seen the caliber of students attending and graduating from the GAF Roofing Academy, inspiring his commitment to support ongoing trainings. "I was pleasantly surprised at the overall outcome of the [Roofing Academy] event," he notes. "It encouraged me to the point that I said, 'I want to do this, whether we benefit from it or not, I want to support this at least twice a year, and we want to get more contractors involved in it.'"Want to get involved in supporting the future of the roofing industry? Learn how to participate in a future Roofing Academy and discover the training opportunities available to your team through GAF CARE.*Contractors enrolled in GAF certification programs are not employees or agents of GAF, and GAF does not control or otherwise supervise these independent businesses. Contractors may receive benefits, such as loyalty rewards points and discounts on marketing tools from GAF for participating in the program and offering GAF enhanced warranties, which require the use of a minimum amount of GAF products. Your dealings with a Contractor, and any services they provide to you, are subject to the Contractor Terms of Use. Visit www.gaf.com/gaf-contractor-terms-of-use for details.

By Authors Karen L Edwards

June 17, 2024

GAF worker applies StreetBond®, a solar-reflective pavement coating, to an asphalt court.
In Your Community

GAF Partners with the Orlando Magic to Revamp a Sports Court

A newly renovated basketball court at Chambers Park Community Center in Kissimmee, Florida, is a slam dunk for local children and families. GAF is proud to have partnered with the Orlando Magic, AdventHealth, and the city of Kissimmee to make this community's hoop dreams come true.The Chambers Park Community Center is a focal point of the Kissimmee community. The facility offers after-school programs, community events, and camps. It also features a popular neighborhood playground and basketball court where friends and families gather.The collaborative work involved in upgrading the sports court—which reopened on January 10, 2024—is just one example of how the GAF Community Matters program supports and celebrates neighborhoods nationwide.Renovating the Court's Coating and DesignThe inspiration for this project came from wanting to enhance the quality of life for the residents of Kissimmee and provide a safe, vibrant place for families to play outdoors. GAF understands the importance of building resilient communities, so the company donated cutting-edge materials and covered the cost of installation labor to ensure the Chambers Park Community Center's new sports court was a perfect outdoor place to play. To make the asphalt court as safe and durable as possible, GAF used StreetBond® solar-reflective, durable pavement coating with Invisible Shade™. The product can help reduce pavement surface temperatures by an average of 10°F while also helping to protect the pavement from premature degradation due to heat and UV rays.In areas where heat collects, also known as "urban heat islands," there tend to be few trees and minimal shady vegetation, so blacktops and hard surfaces—including parking lots, roadways, concrete recreation areas, and roofs—absorb and release heat well into the evening. Over time, these excess temperatures may contribute to heat-related health effects and negatively impact quality of life for local area residents. This wasn't the first time GAF deployed pioneering cooling strategies to enhance a community's experience. As part of the GAF Cool Community project in Pacoima, California, StreetBond® was used to help diminish urban heat island effects. GAF quickly completed the work in Kissimmee and the facility was opened to the public shortly afterward. The sports court's vibrant design uses custom-made colors inspired by the blue retro logo honoring the Orlando Magic's 35th anniversary court.Celebrating the Court's OpeningCurrent and former Orlando Magic players and Kissimmee's Mayor celebrated the court's unveiling. Team mascot STUFF the Magic Dragon joined the festivities to the crowd's delight.Sixty youth from the Chambers Park Community Center after-school program also attended the court's reopening. The students were thrilled to join in a fast-paced basketball skills clinic. The newly launched court was their chance to meet their sports heroes up close, take photos with them, and enjoy their new playground.Investing in Communities of the FutureThe Chambers Park Community Center's sports court is an important gathering space where youth and their families can safely play, build relationships, and develop their skills.With this project, the GAF Community Matters initiative continues its longstanding partnership in neighborhoods across the country. GAF is committed to making a positive difference by offering roofing expertise, resources, and products to help build more resilient communities.Providing safe, high-quality sports courts where residents can gather helps build resilient communities while promoting active, healthy lifestyles—and GAF is proud to play a role. To learn other ways GAF supports communities across the country, visit www.gaf.com/communitymatters.

By Authors Wendy Helfenbaum

May 28, 2024

Don't miss another GAF RoofViews post!

Subscribe now