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Do Spray-On Roof Coatings Work​? Understanding The Pros And Cons

Posted on April 9, 2025

Do Spray-On Roof Coatings Work​? Understanding The Pros And Cons

Has your roof started to show signs of wear and tear? You might think replacing it is the only option, but there’s another solution that could save you money and time: spray-on roof coatings. These coatings are becoming popular because they offer a cost-effective and easy way to extend your roof’s life and improve energy efficiency. Instead of tearing off the old roof, spray-on coatings can help restore it. 

But do spray-on roof coatings work​ as well as people say? In this blog post, we’ll explain what spray-on roof coatings are, how they work, and the pros and cons to help you decide if this option is right for your property.

What Are Spray-On Roof Coatings?

A spray-on roof coating is a liquid material that’s sprayed directly onto your roof to create a smooth, waterproof layer. Made from materials like acrylic, silicone, rubber, or polyurethane, these coatings are applied depending on the type of roofing material you have, using special equipment to cover the surface evenly. 

Once dry, they form a strong barrier that keeps out water, reflects sunlight to reduce heat, and helps extend the life of the roof. These coatings are great for flat or low-slope roofs and can be a more affordable option than a full roof replacement. When installed properly, they can also come with a new warranty lasting 10 to 20 years.

What Types Of Spray-On Roof Coatings Are There?

  1. Acrylic Coatings: A budget-friendly choice that reflects sunlight well, great for sloped roofs but not for flat roofing systems that deal with frequent standing water.
  2. Silicone Coatings: Strong and flexible, perfect for flat roofs and areas with heavy rain or harsh weather.
  3. Polyurethane Coatings: Tough and versatile, work well on rubber, single-ply, and modified bitumen roofs.
  4. Butyl Coatings: Blocks moisture and vapor really well, best for flat or low-slope roofs.

Also Read: What Is An Elastomeric Roof Coating? (& Pros & Cons)

What Are The Pros Of Spray-On Roof Coatings?

To get a better idea of why property owners are starting to choose this, let’s check out the main benefits:

Spray-On Roof Coatings

1. Seamless Coverage

Once applied, the spray-on roof coating forms a smooth, continuous layer. This seamless design eliminates gaps and weak points where water usually sneaks in.

2. Improved Energy Efficiency

Thanks to its reflective surface, the roof spray coating helps deflect sunlight and heat. This keeps the interior cooler and reduces the work that your HVAC system has to do. 

3. Longer Roof Life

By shielding against UV rays, moisture, and debris, the roof coating protects your roof from daily wear. With regular care, it even has the potential to add years to your roof’s life.

4. Low Maintenance Needs

Maintenance is simple. Small issues like cracks or pinholes are easy to fix with caulk, and routine inspections help keep the roof surface watertight.

5. Fast and Quiet Installation

Since there’s no need to tear off the old roof, spray roof coating installation takes very little time. It’s also quiet and non-disruptive, making it ideal for occupied buildings.

6. Cost-Effective Solution

A spray-on roof treatment offers the potential for savings by preventing the need for a full roof replacement. It restores function and appearance without the expense.

7. Weather-Resistant Protection

From heavy rain to strong sun, spray-on coatings stand up to the elements. They create a durable, waterproof barrier that lasts all year long.

What Are The Cons Of Spray-On Roof Coatings?

Before making a decision, it’s important to look at some downsides too.

1. Risk of Over Spraying 

Wind can blow spray roof coating beyond the target area, causing unwanted messes on nearby cars, windows, or landscaping. Using shields and applying in calm weather helps reduce this risk.

2. Slippery When Wet

Some coatings, especially silicone-based spray-on roof treatments, become slick when wet. This makes walking on the roof dangerous. Adding grit or sand can help improve traction.

3. Limited Insulation Value

While these coatings offer surface protection, it doesn’t add much insulation. 

4. Dirt Build Up Reduces Reflectivity

Over time, spray-on roof coatings — especially silicone — can collect dust and dirt. This dulls the surface and reduces its reflective power, which may increase indoor temperatures unless it is cleaned regularly.

5. Not a Fix for Major Roof Damage

While spray-on roof treatments protect well, they can’t repair serious roof issues. If there’s major structural damage, a full replacement will be necessary.

6. Professional Installation Required

Even though it might sound like an easy process, applying a spray-on roof coating properly takes training and special equipment. Mistakes like uneven coating or pooling water can lead to future leaks.

7. Strong Odors During Installation

Some spray roof coatings, like polyurethane, produce strong odors when applied. These fumes aren’t harmful, but they can be unpleasant and may affect the people nearby during the process.

8. Material Compatibility Issues

Not all spray coating for roofs works with every roofing surface. Using an incompatible product can lead to peeling or bubbling, so it’s important to pair your chosen coating with the current roofing material you have.

Answering The Main Question: Do Spray-On Roof Coatings Work​?

Yes, applying spray-on roof coatings correctly and under the right circumstances provides excellent results. With their use, these coatings provide a continuous, smooth layer that reflects sunlight and helps prevent leaks, which can reduce cooling expenses. Though their effectiveness may vary depending on the coating type applied and the roof’s condition, they are generally a solid choice for extending the lifespan and strength of your roof.

When Are Spray-On Roof Coatings A Good Idea?

To help you decide, here are a few times when using a spray-on roof coating makes the most sense:

1. Renovating Old Roofs

Spray-on roof coatings work well for aging roofs that are still in good shape. They add protection and extend the roof’s life with no need for a full replacement.

2. Fixing Leaks

For roofs with ongoing leaks, these coatings create a seamless layer that seals the whole surface and blocks water from getting in.

3. Budget Constraints 

When money is tight, spray-on coatings offer a more affordable option than full replacements. 

4. Tricky Roof Designs

Roofs with lots of angles, vents, or pipes are easier to cover with spray coatings. The spray reaches all areas and leaves no gaps.

5. Quick Temporary Fixes

In emergencies, spray-on coatings can be used as a fast, short-term solution until a full repair or replacement is possible.

Schedule Your Roof Coating Service Today With Buffalo’s Best Roofing Company LLC

When it comes to protecting and extending the life of your roof, Buffalo’s Best Roofing Company LLC is the name you can trust. Our team specializes in high-quality roof coating services, built to withstand the tough Buffalo weather. 

We know how important a strong, energy-efficient roof is, which is why we apply a seamless, protective layer that helps shield your property from the elements. Count on us to improve your roof’s durability while helping you save money. Contact us today at (716) 276-3673 and see the difference that quality roofing services make.