How Much Does Roof Coating Cost? [2025 Data]

Roof coating and sealing can help preserve the life of your roof and patch up problem areas that could lead to leaks or structural issues. Since no two projects are alike, most contractors don't offer flat rates or one-size-fits-all pricing structures for this type of job. For an average-sized roof, the total roof coating cost falls between $502 and $2,373 for materials and professional applications. Most homeowners will pay $1,437 on average to seal a roof.

Roof Coating Cost Factors

Roof rejuvenation cost varies greatly and, ultimately, comes down to what condition your roof is in, the type of coating you choose, and your roof’s material. If extensive work is needed, you choose a high-end coating like polyurea, or you have a particularly steep or difficult roof to work on, contractors may charge extra per square foot.

Roof Size

Even when contractors offer a flat fee to cover your total roof rejuvenation cost, square footage will come into play during their calculations. The roof coating cost per square foot, for example, ranges from $0.65 to $5. The type of sealant will play the largest role in the per-square-foot cost, but each of the factors below—such as roof condition, labor rates, and permits—affect the price as well. Let's take a look at the roof coating cost for sections and the entirety of your roof.

Materials

Roof coating materials average $0.15 to $2.50 per square foot. Acrylic coating is the most affordable (even the best kinds cost under a dollar per square foot). Liquid rubber and high-end polyurea (which requires two coats) will cost $2 to $2.50 per square foot.

Labor

Local roof sealing professionals charge $0.50 to $3 per square foot or $50 to $80 per hour for labor. Polyurea is the most expensive to apply, at $2 to $3 per square foot, because it requires two coats. Labor fees will depend on the size and height of your roof and the application method. Difficult working conditions, such as a particularly steep or sloped roof, may increase costs.

Permits

You may need a roofing permit before you can work on your roof. This generally costs between $100 and $500, but it depends on your local laws.

Roof Inspection

If you’re sealing your roof because you have moisture issues, you may need a roof inspection to determine the source of the problem. This costs between $125 and $350 on average.

Roof Cleaning  

Sealant won’t adhere to a dirty roof, so budget about $300 to $625 for the cost of roof cleaning. The total cost depends on the type of cleaning you need. It will cost more to bust stubborn grime than simply hose off some dust.

Power washing a roof averages $0.20 to $0.60 per square foot, but you can save on labor by renting a power washer and doing the job DIY if you are comfortable with safety precautions for working on a roof. 

Roof Leak Repairs

If your roof is nearing the end of its life span and you notice continuous leaks, it may be time to consider replacing your roof instead.

Roof Coating Cost by Sealant Type

Different types of roofing require different types of sealant—from acrylic and silicone to polyurethane. This impacts the total cost of the job. Some materials are inherently more expensive, while others drive up labor costs because they’re more difficult to install.

Roof Sealing Cost by Roof Type

Long-lasting roof materials could cost more to add sealant to, while recoating a flat roof isn't as inexpensive as you might think.

Asphalt Roofs

Asphalt roofs cost an average of $1,000 to $2,500 for materials and application. 

Homes with lots of objects on top or with vulnerable areas—like chimneys, skylights, and flashing—may require the application of bitumen, an asphalt-based sealant, which could drive up the price. Bitumen costs around $0.75 to $1.50 per square foot.

Metal Roofs

Coating a metal roof costs between $1.50 and $3 per square foot on average for materials and installation. Elastomeric coatings are needed for metal roofs to prevent corrosion and preserve their life. 

Flat Roof

Recoating a flat roof can actually cost more in some cases, depending on the coating material you choose. Higher-end coats like polyurea could cost as much as $5 per square foot to purchase and apply.

Pitched or Sloped Roofs 

You’ll spend anywhere from 35% to 50% more on coating a pitched roof. Steep slopes and features like skylights may cost even more per square foot. It also depends on the type of roof.

• Metal: If you’ve installed a metal roof with a slope, you’ll generally pay $1 to $2 more for sealing because your contractor needs to apply the coating in thin layers. Expect to spend somewhere around $2.50–$5 total.

• Asphalt: For asphalt shingles, you can make small repairs using elastomeric bitumen sealants. Expect to spend about $1–$2.50 per square foot for patching shingles and small areas. Coating an entire asphalt shingle roof is not recommended because it can impact drainage.

Mobile Home Roof 

The cost of roof sealing for a mobile home is typically between $0.50 and $4.50 per square foot. Most homeowners use acrylic or liquid synthetic rubber. In certain instances, it may make more sense to skip the coating and replace the mobile home roof.

Coating or Sealing a Roof Yourself vs. Hiring a Pro

DIY roof sealing can save you about 50% of the cost of the project if you have the tools, materials, and know-how. However, hiring a professional roof sealer is well worth the cost (and highly advised) when it comes to roof coating. Roofing work can be extremely dangerous, and improper sealing can cause extensive water damage to your home’s structure. DIY work may also void your homeowner’s insurance and cause you to fail your roof inspection if you ever sell your home. 

Licensed and insured local roofing companies have the skills necessary to do the job well the first time. They also protect you as the homeowner in the event that someone is injured on your property.

Cost of Common Roof Coating Add-Ons 

Sealing a roof can incur some additional costs. You may need to clean your roof and make repairs before you apply your coating, which a roofing pro will bill as a separate service. Here are some common extra costs you might want to add to your budget.

Cooling and Reflecting Coatings 

Cooling and reflecting coatings can increase your home’s energy efficiency. Expect to spend around $0.50 to $4.50 per square foot on this upgrade.

Gutter Cleaning Costs

Since your contractor is already working on your roof, you may be able to save money on gutter cleaning. Expect to spend around $120 to $250 to clean your gutters. Regular guttering cleaning can help prevent moisture issues and leaks down the line.

Gutter Repair Costs

Gutter repair costs depend on the state of your drainage system, including the soffit and fascia material. Expect to spend between $200 and $600 on average to get your gutters in tip-top shape. 

How to Save Money on the Cost of Roof Sealing

Keep your roof coating costs under control by working with trained professionals who have your home's best interests in mind. And while you may be able to DIY this project if you're comfortable on your roof, be sure to check your homeowners insurance beforehand. All this being said, here are some ways to lower roof rejuvenation costs.

• Meet with at least three licensed, insured, and highly reviewed professionals before signing a contract.

• Bundle several projects at once to avoid higher labor and overhead fees.

• Schedule the job outside of the high season for roofers whenever possible, and keep your schedule flexible.

• DIY basic roof and gutter repairs whenever possible before arranging professional roof coating.

• Schedule a roof inspection every one to two years to catch roof coating decay early.

How Angi Gets Its Cost Data

Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We’ve surveyed thousands of real Angi customers about their project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects. 

Want to help us improve our cost data? Send us a recent project quote to [email protected]. Quotes and personal information will not be shared publicly.