Polycoat PC-220 – Single-Component Waterproofing Urethane Membrane

Moisture-Cured Elastomeric Waterproofing Base Coat for Decks, Concrete & Metal

PC-220 is a single-component, liquid-applied, moisture-cured aromatic polyurethane elastomeric waterproofing membrane — the proven base coat for pedestrian deck coating systems. Applied directly to wood, plywood, concrete, or metal substrates, PC-220 creates a seamless, flexible waterproofing layer that forms the foundation for a durable, decorative deck coating system.

Available in Gray and Tan base colors, in 1 Gallon and 5 Gallon pails. Note: PC-220 is not UV stable and requires a topcoat — flakes, quartz broadcast, or a solid-colour polyurethane or polyaspartic coating.

Typical Deck Coating System

1. Base coat: Apply PC-220 at approximately 50 sq ft per gallon. Allow to set up enough to walk on (24–48 hours).
2. Broadcast coat: Apply a second coat of PC-220 and broadcast 100% decorative flakes or quartz granules into the wet coating.
3. Topcoat: Apply a clear protective polyurethane (e.g. PPG Pitthane) or polyaspartic (e.g. CHEM1000PG) topcoat over the broadcast layer.

Key Features

• Single component — no mixing, no pot life concerns; ready to apply straight from the pail
• Moisture-cured — cures using ambient humidity; no separate catalyst required
• Seamless waterproofing membrane — liquid-applied for a continuous, joint-free waterproof layer
• Elastomeric — flexible membrane accommodates substrate movement and thermal expansion
• Economical — cost-effective base coat for pedestrian deck systems
• Available in Gray & Tan — two base colours to suit different topcoat and broadcast combinations
• Optional curing accelerator: PC-50 Accelerator available to speed cure time

Compatible Substrates

• Wood and plywood decks
• Concrete surfaces
• Metal substrates

Performance 

• Seamless waterproofing — eliminates joints and seams that are common failure points in traditional deck waterproofing
• Flexible membrane — moves with the substrate to resist cracking over time
• Broadcast-ready — second coat accepts 100% flake or quartz broadcast for a decorative, slip-resistant finish
• System-compatible — engineered as the base layer for a complete polyurethane or polyaspartic deck coating system

Important: PC-220 is not UV stable. A protective topcoat (polyurethane or polyaspartic) must be applied over the broadcast layer.

🎥 Watch: Deck Coating 101 – Applying PC-220
🎥 Watch: Installing a Pedestrian Deck Polycoat Elastomeric Coating System