White Roof Coating Benefits

What are the Benefits of White Roof Coatings?

You’re asking about the benefits of white roof coatings, which are also called “cool roofs.”

The main benefits of white roof coatings are that they reflect sunlight and heat away from your building. This helps keep your building cooler, reduces how much your AC runs, and can extend the life of your roof.

Your Building is Too Hot and Your AC Bills Are Too High

You might have noticed your building gets really hot inside, especially during warm weather. Your air conditioning unit seems to run constantly, struggling to keep up, and your energy bills are going through the roof. This is often worse on the top floor or near the ceiling. You might also see cracks or bubbling on your existing roof surface, or maybe your roof just looks old and worn out.

Dark Roofs Soak Up Heat, Costing You Money

The problem is that most traditional commercial roofs, especially dark ones like tar and gravel, asphalt, or black EPDM, absorb a lot of the sun’s heat. On a sunny day, a dark roof can get as hot as 150 to 180 degrees Fahrenheit. All that heat soaks into your building. Your air conditioning system has to work overtime to fight against this heat gain, which uses a lot of electricity and drives up your energy costs. This constant heating and cooling also makes your roof material expand and contract, leading to cracks, leaks, and faster aging of the roof itself. Ignoring this problem means higher utility bills every month and a shorter lifespan for your roof, leading to expensive roof replacement sooner than necessary.

Reflecting Heat Away with a White Coating System

A white roof coating system works by reflecting a large portion of the sun’s ultraviolet (UV) and infrared (IR) rays. Instead of absorbing heat, your roof bounces it away. We use Conklin acrylic coating systems that are applied directly over your existing commercial roof.

How We Install a White Roof Coating System:

1. Inspection and Repair: First, we do a thorough inspection of your roof. We look for any damage, leaks, or areas where water might be getting in. If your insulation is wet or the roof deck is severely damaged, a coating system might not be the right fit. We’ll tell you straight if your roof is past the point of restoration. Assuming it’s a good candidate, we make necessary repairs to the existing roof — patching holes, sealing cracks, and fixing any weak spots.
2. Cleaning: The roof surface is thoroughly cleaned to remove dirt, debris, and any loose materials. This ensures the coating will stick properly.
3. Primer (if needed): Depending on your existing roof type, we may apply a primer layer. This helps the white topcoat bond strongly to the old surface.
4. Seam Reinforcement: We pay special attention to seams, penetrations (like pipes and vents), and flashing. These areas are often where leaks start. We reinforce them with fabric and coating to create a seamless, watertight barrier.
5. Base Coat: A white acrylic base coat is applied. This layer starts the reflective process and adds another layer of protection.
6. Top Coat(s): One or more layers of a highly reflective white acrylic top coat are applied. This is the layer that does most of the work reflecting sunlight. These coatings are designed to be durable, flexible, and resistant to dirt pick-up.

The result is a bright, seamless, and reflective surface that lowers your roof’s temperature. This means your building stays cooler inside, your AC doesn’t work as hard, and your energy bills go down. Plus, this cool, protective layer helps extend the life of your existing roof for many years, often delaying expensive tear-off and replacement. This process can be applied to many roof types, including metal roofs, flat roofs, and EPDM roofs.

Frequently Asked Questions

Are white roof coatings effective in all climates?

White roof coatings are most effective in warm and hot climates where cooling costs are a major concern. They can significantly reduce air conditioning use. In colder climates, they still offer benefits like roof protection and leak prevention, but the energy savings from reduced AC might be less impactful. Some studies suggest a slight increase in heating costs during winter, but for many commercial buildings, the overall year-round savings and roof longevity still make them a smart choice, especially with modern insulation.

How long do white roof coatings last?

A properly installed Conklin-trained white roof coating system can add 15 to 20 years or more to the life of your commercial roof. The exact lifespan depends on the specific system used, how well it’s maintained, and the weather conditions it faces. Regular inspections and maintenance can help maximize its durability.

Do white roofs get dirty and lose their reflectivity?

All roofs accumulate some dirt over time. However, the Conklin acrylic coatings we use are designed to resist dirt pick-up. While a dirty roof can lose some reflectivity, the drop is usually not significant enough to negate the benefits. Periodic cleaning, which is part of routine roof maintenance, can restore much of the original reflectivity. Even with some dirt, a white coated roof will still reflect more heat than a dark, uncoated roof.

Ready to see if a white roof coating is right for your building? Call us at (309) 303-3128 or visit our contact page to schedule a free, no-obligation roof inspection. Our Conklin-trained contractors are ready to provide an honest assessment and explain your options.