Spraying Roof Coatings – A Complete Guide to Equipment

Spraying Roof Coatings – A Complete Guide to Equipment

April 15th, 2022
Eric Emin Wood

Roof coatings offer significant levels of protection for their underlying roofs from the sun, rain, and other weather conditions, thanks to their characteristic thickness. Similar to thick paint, several homebuilders and homeowners prefer roof coatings, particularly because it reduces tear-off, lowers energy costs, and creates a seamless membrane to ensure a longer lifespan.

However, applying roof coatings typically comes with certain challenges due to their uniqueness. 

Roof coating sprayers are essential equipment needed for property protection. They provide enough pressure and power for high-density sprayings so the coatings can seal your building perfectly, offering the highest possible level of resistance to climatic elements, as mentioned above. 

Choosing the right roof coatings sprayer for your building can be challenging, mainly because of the multiple options available in the market. This article contains a complete guide to helping you buy the best and most appropriate roof coating sprayer for your building.

Spraying Roof Coatings: The Basics

In the simplest terms, roof coatings are fully-adhered, monolithic, fluid-applied roofing membranes with elastic properties allowing them to stretch and return to their original state without any permanent damage. 

Roof coatings are famously regarded as spray-applied roofing mainly because home builders prefer using sprayers when coating roofs, as they allow a smoother, extended spread and continual flow of coating across roof substrates. This helps builders achieve a seamless, waterproof roof membrane.

While a more recent development in the roofing industry, spray-applied roofing has offered awe-inspiring performance since its introduction, becoming one of the most reliable options for replacing flat roofs available presently.

Roof coatings are generally recommended for flat and low-sloped roofs. Flat roof spray coatings are applied as a liquid and allowed to dry within eight to twenty-four hours, depending on the weather conditions.

The major advantage of spray roof coatings over other alternatives is their ease of application. With your roof coating spraying equipment – a pump and sprayer – you can apply the coating effortlessly by yourself. Interestingly, you don’t always need a primer for your coatings. 

Spray applied coating system also helps you achieve seamless bonding, forming a strong, impermeable membrane which water can only penetrate if you misapply the spray. Apart from this system’s strong adhesive and cohesive properties, spray-applied coatings are also reflective. After completely drying, they efficiently reflect the sun rays, ensuring the roof surface and your building interior is kept cool.  

Spray-coated roofs are easy to repair. After identifying the problem, you can quickly fix any leak or crack with chalk. However, you can also prevent possible wear-off, leaks, or cracks through routine inspections and maintenance. 

Summarily, spray-applied roof coatings are undoubtedly one of the best materials needed to maintain your roof, thanks to the numerous advantages that they offer. However, if you are considering spray-on roof coatings, then there are a few factors to consider, especially the weather or climatic conditions, type of roof, and, most importantly, the best roof coating spray equipment to use. 

The section below carefully reviews the best roof coating spray equipment to use. Available here at Bolair, this equipment offers multiple valuable features, including wide coverage, high pressure, and flow rate, making them an extremely versatile option for use.

The coating spray equipment is designed for various roofing systems. Whatever your needs may be, whether spray-on roof coating for shingles, rubber, acrylic, etc., you can be sure of finding the best match in our catalogue of products. 

Top Picks to Help with Your Spraying Roof Coating Job 

Are you wondering how to spray elastomeric roof coatings, or find more versatile silicone roof coating spray equipment? Bolair is your best bet! Characterized with versatility and ease of use, our products have been designed and manufactured to meet your needs as a professional contractor or for personal use. 

Regardless of the project’s size or complexity, you can find the perfect silicone roof coating spray equipment to match your specific requirements with our top equipment picks to help you with your spraying roof coating jobs.

  1. King Airless Sprayers

The King Airless Sprayer features a high-performing, high-pressure spraying technology, offering long-lasting durability and enhancing productivity. This air-operated sprayer is perfect for extremely tough conditions, including corrosion-control materials.

With this roof coating spray equipment, you don’t need to worry about downtimes, as the spraying equipment features a de-icing model that eliminates freeze-ups. 

Top Features

  • Perfect for rugged coating conditions.
  • Offers long-lasting results thanks to its motor technology design.
  • Includes 3 motor sizes.
  • Available in 8 models, depending on your requirements and required specifications.
  • Features a DataTrak monitor for system diagnostics, runaway control, and material tracking.
  • Fewer downtimes, thanks to its de-icing capabilities
  1. King XP Plural-Component Sprayer

Undoubtedly, plural-component spraying is the next big thing for spray-applied coating systems. The King XP Plural Component Sprayer is high-pressure spraying equipment for protective coatings. Like the King Airless Sprayer, this silicone roof coating spray equipment was also designed for the toughest coating conditions, ideal for bridge, marine, wind energy, and rail applications.

With the King XP Plural Component Sprayer, you can download spraying data, making repeated tasks faster and easier to do, reducing waste, and ensuring accuracy, ultimately improving productivity. 

Top Features

  • Features advanced but easy-to-use user controls, making the equipment usable by both amateurs and professionals.
  • Supports multiple spray guns for increased productivity.
  • Includes a variable ratio system.
  1. Reactor H-XP3 

The Reactor H-XP3 was designed and manufactured for applying high-pressure coatings, such as polyurea. Characterized with high performance and power, the Reactor H-XP3 features hybrid heaters for heating materials quickly while maintaining pre-set temperature points. 

Supporting maximum flow rates, this equipment enhances productivity, allowing reach your target as quickly as possible without affecting quality. Reactor H-XP3 is easy to use and maintain – its durability, if appropriately maintained, is unmatched. 

Top Features

  • Digital pressure and heat control for programming pressures and temperature and monitoring overall performance.
  • Powerful hybrid heaters for quick heating, maintaining pre-set temperature points without having to reduce your flow rates.
  • Easy to service and maintain.
  1.  Graco Big Rig Sprayers (GH675, GH833, GH933, and GH5040)

Graco Big Rig Sprayers are the perfect sprayers for jobs that require top-tier performance, versatility, and durability. Their uses range from applying roof coatings to waterproofing, fireproofing, and applying protective coatings, and each is customizable to best fit the material being sprayed, along with prioritizing the most cost-effective system. 

With a heavy-duty JetRoller system and a 25-gallon material hopper, this equipment allows you to save time by maximizing productivity through one-step spray and back roll technology and fewer necessary refills. 

Top Features

  • Oil Alert prevents damage from oil levels that drop too low by shutting down the engine automatically. 
  • Easily customizable for each coating to allow for versatility and top-tier performance, no matter the job. 
  • Include time-saving accessories to maximize productivity. 


Can You Spray Acrylic Roof Coating?

Yes, you can spray acrylic roof coatings. As a popular choice for sloped metal roofs, acrylic coatings are usually sprayed using guns with small orifices. Here, you fill the spray pump with the coating and pressurize out when applying. 

Spraying acrylic roofs has proven to be the most cost-efficient option, especially when handling large jobs. Apart from spraying your acrylic roof coatings, you can also use brushes or rollers. 

Are you considering spraying your acrylic roof coating? Check out our catalogue of spray equipment to choose the sprayer that best suits your needs. 

How Long Does Roof Coating Last?

The durability of roof coatings depends on several factors, most importantly the roof’s thickness, weather conditions, and level of roof maintenance employed. Nonetheless, a roof coating should last between 10 to 20 years if properly maintained.

Despite lasting as long as a decade, it is usually advised to consider recoating your roof every five years to protect its integrity and ensure continued performance. Also, apart from this routine recoating, you should coat your roof again whenever you notice the presence of pooling water or cracks. Quickly addressing such issues helps prevent further possible damages. 

Can Roof Coating Be Sprayed?

Yes, roof coatings can be sprayed. However, the spraying approach required depends on the type of roof. For instance, elastomeric roof coatings require a large airless sprayer for efficiency due to the thickness of the roof type.

Spraying your roof coating helps a great deal in maintaining the value, state, and integrity of roofs. To apply, first, clean the roof using a high-pressure cleaner. If required, you should also consider repairing the roof before spray coating. With the proper roof coating spray equipment, you can be sure of having the best result possible. 


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