Roof drainage isn’t always confined to flat rooftops—cornices and parapets also require dependable solutions. The Zurn Z185 Cornice Roof Drain is specifically engineered to manage water runoff from cornices, projecting elements, and decorative building features. With durable construction and efficient performance, the Z185 helps preserve the integrity of architectural details while preventing water-related damage. This guide explores its features, applications, installation tips, and a case study in action.

Zurn Z185 Cornice Roof Drain Schematic

What Is the Zurn Z185?

The Z185 is a cornice roof drain designed to collect and channel water from architectural cornices and projecting roof edges. Built with a cast iron body, it features a hinged cast iron grate that allows for high flow while preventing debris blockages. Its design is compact, efficient, and built to handle demanding exterior conditions while protecting decorative roof details.

Key Features & Benefits

• Cast Iron Body: Heavy-duty construction ensures durability and long service life.
• Hinged Grate: Provides easy access for cleaning while preventing debris from obstructing flow.
• Compact Design: Fits into cornices, ledges, and parapet systems without detracting from aesthetics.
• Reliable Water Management: Safeguards architectural elements from water pooling and damage.
• Low Maintenance: Hinged grate allows quick inspection and cleaning.

Zurn Brand Quality

Applications of the Z185

• Architectural cornices on historic and modern buildings
• Parapet systems requiring discreet drainage
• Decorative roof elements on commercial and institutional buildings
• Retrofits where preserving aesthetics and managing water is equally important

Installation Considerations

Proper installation of the Z185 requires integration with the cornice or parapet design to ensure seamless water collection. Positioning must align with runoff flow paths, and the drain should be connected securely to downspout or leader systems. The hinged grate should remain accessible for periodic inspection and cleaning.

Zurn Z185 Dimension Schematics

Case Study: Historic Building Restoration

Challenge: A century-old courthouse undergoing restoration faced water damage along its ornate cornices. Original drainage elements had deteriorated, causing leaks and structural wear.

Solution: Restoration teams installed Zurn Z185 Cornice Roof Drains in alignment with existing cornice structures. The heavy-duty cast iron construction blended durability with discreet installation. The hinged grate provided easy access for routine maintenance without impacting historic aesthetics.

Outcome: The project successfully preserved the building’s architectural charm while solving chronic water issues. Maintenance crews reported simplified inspections and improved water flow through the cornice system, protecting the courthouse for decades to come.

Conclusion

The Zurn Z185 Cornice Roof Drain is a specialized solution for managing water runoff from decorative roof features. Its durable cast iron body, hinged grate, and compact design make it a trusted choice for both restoration projects and modern builds. For architects, contractors, and building owners looking to balance function and aesthetics, the Z185 offers long-term performance and protection.