In architectural roof terraces, promenades, plazas, and deck surfaces, drainage must perform without detracting from the design. The Zurn Z158 10" Square Top Prom-Deck Drain delivers a clean, square grate that aligns with paving patterns while providing reliable runoff control. Below we cover how it works, ideal applications, best-practice installation, and a quick case example.

Zurn Z158 Prom-Deck Drain Schematic

What Is the Zurn Z158?

The Z158 is a 10-inch square-top promenade/deck drain designed for flush, low-profile integration into finished deck surfaces. Its square grate aligns neatly with linear paver or tile layouts to maintain visual continuity while managing stormwater effectively.

Key Features & Benefits

• Square Grate Top: Aligns with paving grids for a cohesive look.
• Flush Installation: Sits level with the deck surface for pedestrian safety.
• Efficient Drainage: Captures runoff without disrupting the finish.
• Durable Build: Engineered for rooftop exposure and long service life.
• Design-Forward: Ideal where aesthetics and function must coexist.

Zurn Brand Quality

Where Z158 Works Best

• Roof terraces, promenades, and rooftop plazas
• Decks with tile, stone, or modular paver patterns
• Public/pedestrian spaces needing flush, low-profile drains
• Architectural rooftops prioritizing clean lines and alignment

Installation Best Practices

Quick tips for performance and appearance:

• Set the drain flush with the finished surface to avoid trip hazards.
• Plan grate orientation with your paver layout before final setting.
• Create positive slope to the drain; avoid flat spots that cause ponding.
• Integrate waterproofing carefully around the body to prevent infiltration.
• Maintain seasonal access for debris removal and inspection.

Case Study: Terrace Walkway

Challenge: A rooftop promenade needed discreet, effective drainage that wouldn’t break the paver grid lines.

Solution: Designers specified Zurn Z158 drains at low points. The square grates aligned with the paver joints, and the flush install preserved clean sightlines.

Outcome: The walkway drains reliably during storms, maintenance is simple, and the intended aesthetic remains intact.

Conclusion

The Zurn Z158 10" Square Top Prom-Deck Drain brings design harmony and dependable drainage to terraces, promenades, and plazas—perfect where visual order and performance both matter.