Westcoat® ALX & ALX Pro
Durable, Decorative, and Code-Compliant Deck Waterproofing
Long-Lasting Protection for Decks, Balconies, and Walkways
Protect your residential, HOA, or multifamily property with Westcoat® ALX and ALX Pro systems. These fiberglass-reinforced, ICC-approved deck coating systems deliver seamless waterproofing, durability, and safety, while providing customizable decorative finishes for a clean, professional look.
Designed to prevent leaks, rot, and structural damage, ALX systems are ideal for decks, balconies, walkways, and stairs in high-traffic areas.
Westcoat® ALX System Features
- Seamless, watertight barrier for decks, balconies, walkways, and stairs
- Slip-resistant surface for safety in residential and commercial applications
- Decorative textures and colors to complement your property
- ICC-approved and fully SB 326 & SB 721 compliant
Westcoat® ALX Pro Features
- Enhanced fiberglass-reinforced system for heavier-use areas
- Superior durability and wear resistance
- Customizable finishes for aesthetic flexibility
- Ideal for multifamily, commercial, and high-traffic residential projects
- Meets all applicable California building codes and safety standards
Why Choose Westcoat® ALX & ALX Pro?
- Long-lasting waterproofing protection, similar to Pli-Dek®Slip-resistant surfaces for safety
- Decorative finishes for design flexibility
- ICC-approved and code-compliant for California projects
- Low-maintenance and built to withstand the elements
Our Installation Services
We provide full-service deck waterproofing with Westcoat® ALX and ALX Pro systems:
- Deck, balcony, and walkway inspections – Identify issues and prepare surfaces
- Surface preparation and repair – Ensure optimal adhesion and long-term durability
- Professional ALX or ALX Pro installation – Certified installation for a watertight barrier
- Custom finishes – Match your property’s aesthetic design
Durable, Fire-Resistant Deck Coatings
The system forms a tough, watertight layer that helps prevent flame spread, water intrusion, and UV damage—ensuring long-term safety and durability.
Product Highlights:
- One-Hour Fire Rating (ASTM E119 / UL 263)
- Class A Flame Spread (ASTM E84)
- Waterproof, Slip-Resistant Finish
- ICC-ESR & IAPMO Certified
Protect Your Decks and Walkways Today
Upgrade your property with Westcoat® ALX or ALX Pro — durable, decorative, and fully code-compliant. Whether you need inspections, repairs, or full system installation, our certified team provides expert service from start to finish.
Request a Free Estimate
Contact Us for a Consultation
Why Work With Thome Waterproofing?
- Certified installers of Westcoat® ALX & ALX Pro systems
- Experienced with SB 326 & SB 721 inspections and compliance
- Full-service approach: inspection, repair, waterproofing, and maintenance
- Serving Los Angeles County & Ventura County
- Trusted by HOAs, property managers, and building owners across Southern California
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