Zurn Z135‑6 8″ Roof Drain – Conventional Inverted Promenade Deck.

Product Overview:

Meet the Zurn Z135‑6, an 8″ diameter roof drain engineered specifically for conventional inverted promenade deck roofing. Its rugged Dura‑Coated cast iron body ensures long-lasting durability, while the adjustable strainer head, flashing clamp, and stainless steel extension make it a versatile and reliable drainage solution designed for heavy-duty performance.

Features & Benefits:

• Durable Construction: Dura‑Coated cast iron body resists corrosion and ensures a long service life.

• Adjustable Grate: Easily aligns with varying roof thicknesses for a flush fit.

• Secure Drainage Collar: Cast iron strainer collar and flashing clamp collar provide waterproof sealing in promenade deck applications.

• Stainless Steel Hardware: Includes corrosion-resistant extension and components for reliable performance.

• Perfect Fit for Custom Roofs: Tailored for inverted promenade decks, addressing specialized waterproofing challenges.

Specifications:

• Drain Diameter: 8″ (203 mm)

• Body Material: Dura‑Coated cast iron

• Grate: Round, adjustable to roof surface

• Collars: Cast iron strainer and flashing clamp

• Extension & Hardware: Stainless steel

• Application: Conventional inverted promenade deck roofs

Installation Tips:

1. Set the drain body flush with the roof deck before installing insulation and waterproof layers.

2. Use the flashing clamp collar to secure the drain to the waterproof membrane, ensuring a tight seal.

3. Adjust the grate height after the roof surface is finished to ensure flush water flow.

4. Tighten all stainless steel hardware evenly—avoid over-tightening to preserve integrity.

5. Periodically clear debris to maintain optimal drainage performance.

FAQs:

Q: Is this drain suitable for plaza or rooftop decks with pavers?
A: Yes—the durable body and sealing collar make it well-suited for pedestrian decks or paver installations.

Q: Can the adjustable head accommodate thick insulation?
A: Absolutely—this drain’s adjustability allows for raising the grate to match thicker deck systems.

Q: Does it include flashing accessories?
A: Yes, it includes a cast iron flashing clamp collar to secure the waterproof membrane efficiently.

Q: What makes it different from standard roof drains?
A: It’s specially designed for promenade decks, featuring adjustable components and sealing collars to handle inverted deck waterproofing needs.

Q: Is stainless steel hardware included?
A: Yes, all extensions and fasteners included are stainless steel to resist corrosion over time.