Urethane Brush-Grade 522 is a high-solids, single-component, moisture-curing polyurethane elastomeric coating. Specifically formulated with a thicker consistency than Urethane 520, Urethane Brush-Grade 522 is a mastic designed to waterproof and protect large gaps and problem areas.

  • Extremely durable and resistant to dirt pick-up
  • Superior adhesive and cohesive strength
  • Excellent elongation and tensile strength
  • Superior UV protection and reflectivity
  • Reduces daily expansion and contraction (thermal cycling) of roofing substrate

Urethane Brush-Grade 522 was developed from Aromatic Urethane 520 as a waterproofing mastic to use with Urethane 520 and other coatings. With excellent adhesive qualities, Urethane Brush-Grade 522 can be used to restore and protect most conventional commercial and industrial roofing substrates.

  • Modified Bitumen
  • Metal
  • Single-ply
  • Smooth BUR
  • SPF
  • 5-gallon pail
  • 1-gallon pail
  • 20 oz. sausage tube
Learn more about our approvals and certifications

Industry Approvals

Learn more about industry approvals and certifications for American WeatherStar systems and products.

Learn More
Find the right tools and equipment for your next roof coatings project

Tools & Equipment

Work smarter, not harder! Find the right tools and application equipment for your next roof coatings project.

Learn More
Find Your American WeatherStar Field Representative

Find Your Field Rep

Want to meet with someone in person? Find an American WeatherStar Field Representative in your area!

Learn More