PU Exposed
Deck SystemFLEXIBLE · UV-STABLE · WATERPROOF
A flexible, crack-bridging PU membrane system for sun-exposed rooftop and podium decks — a seamless, UV-stable, waterproof wearing surface that walks the line between a trafficable deck and a watertight roof, flexing with daily thermal movement instead of cracking under it.
What is a PU Exposed Deck System?
A PU exposed deck system is a flexible, liquid-applied polyurethane membrane built for decks that are open to the sky — rooftop terraces, podium slabs and exposed walkways. Unlike a rigid epoxy parking deck, an exposed deck must survive direct sun, soaking rain and the constant expansion and contraction that comes with both. The system lays a UV-stable, crack-bridging PU membrane over a mechanically prepared, primed slab and finishes it with a trafficable wearing coat — giving one seamless surface that is waterproof like a roof yet walkable like a deck. It is the right answer wherever a deck is both exposed and needs to stay watertight.
How the System Is Built
An exposed deck is built up as a flexible, seamless skin over a sound, mechanically prepared slab — waterproof below, walkable above. Tap any layer to see its role.
UV Wearing / Anti-Skid Coat
A UV-stable polyurethane wearing coat finishes the deck, protecting the membrane from sunlight and foot traffic and giving a controlled anti-skid surface for an exposed, walkable terrace. System values: Per TDS.
Engineered & Installed by POLYZEN
The PU exposed deck system is delivered as a POLYZEN Applied System — surveyed, designed and installed turnkey by POLYZEN's trained applicators, with membrane build, reinforcement detailing and UV wearing coat specified to your deck's exposure, traffic and drainage.
Built for Sun, Rain & Movement
An exposed deck takes the worst of both worlds — the weather load of a roof and the foot traffic of a floor. A rigid coating would crack; this system is engineered to flex. Performance is confirmed on the project specification.
Membrane type, dry-film thickness and wearing coat are specified per deck exposure, traffic and drainage. POLYZEN confirms finished values on the project specification and does not publish fabricated figures.
The Application Process
Inspect & Assess
Survey exposure, slope and drainage, check moisture and review the existing deck and finishes.
Prepare & Prime
Diamond-grind or shot-blast the slab, repair cracks, correct falls, detail drains and upstands, then prime.
Membrane & Reinforce
Reinforced base PU coat at junctions → top membrane coat to full thickness → continuous waterproof skin.
Wear-Coat & Handover
UV-stable anti-skid wearing coat, flood/ponding test, final inspection and written warranty.
System Specifications
| Property | Detail |
|---|---|
| System Type | PU Exposed Deck System (Rooftop / Podium) |
| Delivery | POLYZEN Applied System (turnkey) |
| Membrane Type | Flexible liquid-applied polyurethane (PU) |
| Reinforcement | Detailed at upstands, drains & movement joints |
| Build-Up | Primer + Base PU Membrane + Top Coat + UV Wearing Coat |
| Substrate Prep | Mechanically Prepared / Ground / Shot-Blasted |
| Surface | Seamless · Crack-Bridging · UV-Stable · Trafficable |
| Total Thickness (DFT) | Per Project Specification |
Ideal Applications
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Applied & Warranted
Every POLYZEN exposed deck system is installed by trained applicators and handed over after a flood/ponding test, a final inspection and a written system warranty. Warranty terms are confirmed per project scope, exposure and substrate condition.
Frequently Asked Questions
Related Car Park & Deck Systems
Make Your Exposed Deck Watertight.
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