Silicone Roof Coatings
At American WeatherStar, we offer a variety of different fluid-applied roof coating systems to protect and restore both flat and metal roof surfaces. Once applied, these systems not only stop and prevent roof leaks, they reduce HVAC system workloads, improve the look of your building, and most importantly, save you money!
Silicone roof coatings are just one of the many chemistry types that we incorporate into our fluid-applied roofing systems. With that in mind, let’s examine the benefits and limitations of silicone roof coatings and what factors you should consider before installing a silicone roof coating system on your building.
What Are the Benefits of Silicone Roof Coatings?
Silicone roof coatings are very popular in the roof coatings industry—and for good reason. Widely considered one of the best roof coatings products on the market today, silicone coatings are a highly versatile elastomeric used for a variety of different applications. That being said, what benefits do silicone roof coatings offer, and what does that mean to building owners and managers?
Excellent UV Stability
Because silicone roof coatings reflect 80-90% of the sun’s harmful UV rays, building owners and managers can save thousands of dollars by drastically reducing cooling costs during the warm summer months. With its superior UV protection, silicone coatings won’t degrade, chalk, or crack from exposure to direct sunlight. Minimizing the sun’s impact on the roofing surface not only helps sustain lower energy costs, it reduces internal building temperatures and prolongs roof life.
Highly Flexible & Durable
Once applied, silicone roof coatings form a flexible, durable, seamless membrane capable of withstanding wind-driven sand, oxidation, and extreme temperatures. Because silicone is a moisture cure substance, it forms an impermeable seal that resists moisture penetration and protects against effects of ponding water.
Silicone roof coatings are high solids, meaning less material is used to achieve the desired dry mil thickness. The ability to apply more coating in a single pass helps save time and labor cost without compromising quality workmanship and system integrity.
What Are the Limitations of Silicone Roof Coatings?
There are a number of factors to consider when choosing a fluid-applied roofing system for your building. While silicone roof coatings do offer many important benefits, it’s just as imperative to acknowledge the limitations of the product.
Easily Attracts Dirt
Silicone roof coatings easily attract air-borne dust and dirt. Over time, these dust and dirt particles build up, causing the coating system to lose its reflective properties. This makes the roof more susceptible to excess UV radiation which in turn, negatively impacts cooling cost and internal building temperatures.
Can Be Challenging to Spray
As with any solvent-based coating, silicone roof coatings can be difficult on hydraulic spray equipment. Issues during the installation process are less likely to occur if the spray equipment is properly cleaned and maintained.
Very Slippery When Wet
Silicone coated surfaces are very slippery when wet. If foot traffic is likely on a silicone coated roof, we highly recommend using the American Weatherstar Walk Path System to designate high traffic areas of the roof surface.