When it comes to protecting your roof and extending its lifespan, roof coating offers a practical, cost-effective solution. Roof coatings can breathe new life into aging roofing systems, improve energy efficiency, and prevent leaks — all without the need for a full roof replacement.
Whether you are a homeowner in Shelby, Ohio, looking to upgrade your property or a commercial property manager trying to extend the service life of your facility’s roof, understanding the benefits and applications of roof coating is essential. Call First Class Roofing today at 888-699-9321 to learn more.
What Is a Roof Coating?
A roof coating is a monolithic (seamless), fully adhered, fluid-applied roofing membrane that is applied directly to the surface of an existing roof. Its primary functions are to seal, protect, and waterproof the roof, while also reflecting sunlight to reduce heat absorption.
Roof coatings act as a protective barrier between the roofing material and the elements, helping to prevent water infiltration, reduce thermal shock from UV exposure, and minimize wear and tear from weathering to extend the roof’s overall service life. Roof coatings are especially beneficial for flat and low-slope roofs, which are more prone to standing water and degradation over time.
Types of Roof Coatings
There are several different types of roof coatings, each suited for specific roofing materials, climates, and building needs. Here are the most common options:
Acrylic Roof Coating
Best for: Sloped metal roofs and other smooth surfaces.
Advantages: Affordable, UV-resistant, easy to apply, and highly reflective.
Considerations: Not ideal for roofs with standing water as it may degrade over time when exposed to constant moisture.
Silicone Roof Coating
Best for: Flat roofs and areas with heavy rainfall or ponding water.
Advantages: Extremely water-resistant, durable under extreme weather, and flexible.
Considerations: More expensive than acrylic and may attract dirt, which can reduce reflectivity over time.
Polyurethane Roof Coating
Best for: Commercial roofs that experience foot traffic or mechanical wear.
Advantages: Tough and impact-resistant, with excellent adhesion and durability.
Considerations: Typically, solvent-based and may emit strong odors during application.
Asphalt-Based Roof Coating
Best for: Modified bitumen, built-up roofs, or older asphalt roofs.
Advantages: Inexpensive and widely used in older commercial buildings.
Considerations: Less reflective and less environmentally friendly than other coatings.
How Long Do Roof Coatings Last?
The lifespan of a roof coating depends on the type of coating used, the quality of the application, the climate, and maintenance practices. On average:
Acrylic coatings: 5–10 years
Silicone coatings: 10–20 years
Polyurethane coatings: 10–15 years
Asphalt coatings: 3–7 years
Elastomeric coatings: 10–20 years (depending on thickness and conditions)
Many roof coatings can be reapplied when they begin to wear down, effectively renewing the protective barrier and extending the life of the roof without replacement.
What Improves Roof Coating Longevity?
To get the most out of your roof coating, consider the following best practices:
Proper Surface Preparation
Before applying coating, the roof must be cleaned thoroughly, and any existing damage (cracks, leaks, or blisters) should be repaired. Skipping preparation can lead to poor adhesion and premature failure.
Professional Application
While some coatings can be DIY-applied, professional installation ensures even coverage, correct thickness, and adherence to manufacturer guidelines. This significantly affects performance and warranty eligibility.
Right Coating for the Right Roof
Selecting the correct type of coating based on your roof material, climate, and exposure is critical. For example, silicone performs better in wet climates, while acrylic excels in sunny, dry conditions.
Regular Maintenance and Inspections
Even coated roofs need periodic inspections. Check for signs of wear, punctures, or pooling water, and clean the roof regularly to prevent debris buildup that can wear down the coating.
Avoid Excessive Foot Traffic
While some coatings like polyurethane are designed to handle traffic, unnecessary walking can cause abrasions or punctures in softer coatings like silicone or acrylic. Use walk pads if needed.
Roof Coating Experts
Roof coatings are a smart and sustainable way to protect your roofing system, extend its life, and improve your building’s energy efficiency. With the right product and proper application, a roof coating can deliver excellent performance for a decade or more, and it can be reapplied to renew its benefits over and over again. Call First Class Roofing in Shelby, OH today on 888-699-9321 to learn more.
FAQ
Can a roof coating stop leaks?
Yes, roof coatings are designed to seal small cracks and pinholes. However, major structural damage or large leaks should be repaired before applying a coating.
Is roof coating a good alternative to roof replacement?
For roofs that are structurally sound but showing surface wear, coating is an excellent and far less expensive alternative to full replacement.
Can roof coatings be applied to all roof types?
Most coatings are designed for flat or low-slope roofs. Some coatings can also be used on sloped roofs with the proper primer and underlayment.
Will a roof coating make my building more energy-efficient?
Yes. Reflective coatings reduce heat absorption, which can lower interior temperatures and reduce cooling costs by 10–30%.