Maximizing the Lifespan of Your Roof with Roof Coating Systems: A Guide for Commercial Roofing Contractors
As a growing commercial roofing contractor, one of the best ways to expand your service offerings and reputation is to become an expert in roof coating systems for repair. Roof coatings are a fantastic way to extend the lifespan of commercial roofs, protect your client's investments, and offer cost-effective solutions for roof repairs and maintenance. Understanding the best roof coating systems is crucial, especially regarding flat roofs, which are common in commercial buildings.
In this post, we’ll explore the details of roof coating systems, compare popular options like elastomeric and silicone coatings, and offer tips on selecting the best coating for flat roofs.
Why Roof Coating Systems?
Roof coating systems are increasingly becoming a go-to option for property managers and building owners looking to extend the life of their roofs without the high cost and downtime of a complete replacement. They provide a seamless, waterproof barrier that protects the roof from UV rays, ponding water, and environmental wear and tear. The right roof coating can add years to the roof’s life, enhance energy efficiency, and reduce maintenance needs.
For you, as a contractor, offering roof coatings is a highly profitable service that can set you apart in the market. The key is choosing a suitable coating for the job.
Best Roof Coating for Flat Roofs: What to Consider
Flat roofs present unique challenges because they are prone to ponding water, leaks, and sun damage. The suitable coating needs to be durable, flexible, and able to withstand the environmental stresses specific to flat roofs. When selecting a coating, consider the following factors:
Climate and Weather Conditions: Areas with heavy rainfall, extreme heat, or high UV exposure may require coatings with specialized properties.
Existing Roof Material: It is crucial that the coating be compatible with the existing roof membrane (EPDM, TPO, metal, etc.).
Maintenance and Recoating: Some coatings may require more frequent recoating than others.
Budget: Offer your clients options that balance cost and longevity.
With these considerations in mind, let’s look at two of the most popular roof coating options: elastomeric and silicone coatings.
Elastomeric Roof Coatings
Elastomeric roof coatings are popular due to their flexibility, durability, and cost-effectiveness. They are typically made from acrylic, silicone or urethane and are designed to contract and expand with temperature changes. This elasticity is essential for flat roofs, which undergo more thermal movement than pitched roofs.
Benefits of Elastomeric Coatings:
Flexibility: Excellent for climates with significant temperature fluctuations.
UV Resistance: Reflects UV rays, which helps lower energy costs and protect the roof membrane from damage.
Cost-Effective: Elastomeric coatings are generally more affordable than silicone, making them attractive for budget-conscious clients.
Water Resistance: They offer solid water resistance, though not as robust as silicone when it comes to standing water.
Best Uses:
Roofs with minimal ponding water: Elastomeric coatings are excellent for flat roofs with good drainage.
Climate Considerations: Ideal for areas with moderate weather and temperatures that fluctuate between seasons.
However, elastomeric coatings may not be the best choice for areas where ponding water is a persistent issue. Over time, standing water can cause acrylic-based elastomeric coatings to break down, leading to premature failures.
Silicone Roof Coatings
Silicone roof coatings are gaining popularity, especially for flat roofs with ponding water issues. Silicone is extremely durable, long-lasting, and highly resistant to water, making it an excellent choice for roofs that frequently experience standing water.
Benefits of Silicone Coatings:
Ponding Water Resistance: Silicone can withstand constant exposure to water without breaking down.
Longevity: Silicone coatings can last up to 20 years with proper maintenance, making them a great long-term solution.
Seamless Waterproof Barrier: The coating creates a fully adhered, seamless membrane that protects against leaks.
UV Reflectivity: Like elastomeric coatings, silicone coatings reflect UV rays and reduce energy costs by keeping the building cooler.
Best Uses:
Roofs with ponding water: Silicone coatings are unmatched in terms of standing water resistance.
Extreme weather conditions: Ideal for areas with heavy rainfall, high humidity, or intense UV exposure.
While silicone coatings are generally more expensive than elastomeric, their superior performance in challenging conditions often justifies the cost. Additionally, silicone coatings can be applied in one thick coat, which reduces labor time and costs.
Elastomeric vs Silicone Roof Coatings: Which is Best for Flat Roofs?
So, how do you choose between elastomeric and silicone for your commercial flat roof projects? Here’s a quick comparison to help guide your decision:
If you’re dealing with roofs that have consistent drainage and no significant ponding water, elastomeric coatings are a cost-effective and reliable option. However, if ponding water is a concern, especially in areas prone to heavy rainfall or humidity, silicone roof coatings are the better long-term solution.
Final Thoughts: Expand Your Expertise with Roof Coatings
As a commercial roofing contractor, adding roof coating systems to your service offerings can increase your business's profitability while providing immense value to your clients. Whether you’re working with elastomeric or silicone coatings, the key is selecting the right product for the roof’s unique needs. Silicone may be the best roof coating for flat roofs with ponding water, while elastomeric coatings are ideal for clients looking for a cost-effective solution in moderate climates.
By mastering roof coatings, you position yourself as a trusted advisor to your clients, offering them durable, sustainable solutions that protect their investments for years.
Feel free to reach out if you need further assistance selecting the best roof coating for your next project. Let’s keep those commercial roofs in peak condition!
