Fire-Rated Deck and Balcony Waterproofing Systems
Waterproof flooring solutions that exceed modern building codes.
Fire-Resistant Balconies and Decks Start with the Right Waterproofing System
As wildfires increase and building codes evolve, fire-rated balcony and deck waterproofing systems have become a must-have for apartment complexes, condos, and buildings. Westcoat’s MACoat® and ALX™ systems offer the highest level of protection, with tested and certified fire ratings that significantly exceed today’s toughest standards.
Whether you’re building in California’s Wildland-Urban Interface or preparing for future regulations elsewhere, surely choosing a fire-rated waterproofing system is essential for safety and code compliance.
Trusted Fire Ratings for Waterproofing Systems
Westcoat waterproofing systems are tested to the most stringent fire standards:
• Class A Roof Covering (ASTM E108)
• One-Hour Fire-Resistance Rating (ASTM E119)
• WUI Chapter 7A Compliance
• ASTM E2632 and E2726 Certifications
Code Compliance for California and Beyond
We designed our fire-rated waterproofing systems to meet the most demanding building codes in the country—starting with California and extending far beyond. Our ALX and MACoat systems are built to comply with the California Building Code (CBC), California Residential Code (CRC), and the City of Los Angeles Building Code (LABC), which are often seen as leading indicators of where national codes are headed.
In addition to fire-resistance testing and Wildland-Urban Interface (WUI) compliance, our systems are listed with the Cool Roof Rating Council, ensuring energy efficiency and heat-reflective properties. We’ve also earned accreditations for waterproofing underlayments, decorative cement finishes, and specialized treatments like plywood seam reinforcement—critical details that help ensure both performance and longevity under inspection.
Working on new construction or bringing an older building up to code? Westcoat’s systems are designed to give you peace of mind and pass inspections with confidence.
Safety with a Finish That Performs
Combine durability with design flexibility. Our textured finishes are:
• Slip-resistant
• Easy to clean
• Available in a range of styles
You don’t have to choose between beauty and performance, with warranties up to 20 years.
In a League of Our Own: Westcoat Fire-Rated Deck Solutions
With over 40 years of experience, Westcoat continues to innovate in the fire-rated waterproofing space. Our systems are featured in industry publications like GBD Magazine, and trusted by builders, architects, and property managers nationwide.
Discover how our Class A, One-Hour fire-rated waterproofing systems protect your decks and meet the latest building codes. Contact Us.
Third-Party Tested
All-in-One report includes:
THE SYSTEMS
For Interior and Exterior Plywood and Concrete Flooring
ALX Pro
MACoat
Westcoat Waterproofing Systems: Built to Support Deck Safety
Westcoat offers long-lasting waterproofing systems designed to meet inspection standards. Whether you’re preparing for a mandatory inspection or proactively maintaining your property, we can help you build safer, more compliant outdoor spaces.
Talk to us about waterproof systems designed for building code compliance.
ALX Pro and MACoat – What’s the Difference?
Both ALX Pro and MACoat are tough, fire-rated waterproofing systems, but they’re built for different needs. ALX Pro is a top-of-the-line solution—reinforced with a metal lath and a Class I vapor retarder, making it ideal for heavy-traffic areas like walkways and balconies that need serious durability and extra moisture control. It’s a go-to for apartment complexes and commercial builds where long-term performance is non-negotiable.
MACoat, on the other hand, is a flexible and reliable option for concrete surfaces. It offers fire-rated protection, waterproofing, and slip resistance. It’s often used for residential balconies, decks, and areas where a bit more flexibility in the surface is helpful.
No matter which system you choose, both are designed to meet fire codes and deliver lasting protection.
