zurn - 12-7/16" L Roof Drain Dome (Blue, Cast Iron) - P100-DOME-CI

zurn - 12-7/16" L Roof Drain Dome (Blue, Cast Iron) - P100-DOME-CI

Zurn's 15" cast iron dome strainer provides drain line protection from debris

Features

• Cast iron dome is approximately 4-1/2" tall and can be used on new or existing Z100 roof drains
• Durable construction stands up to tough environments
• Design accommodates new construction and retrofit applications
• Replacement/Repair Part - Cast Iron Dome Only

What our Experts Think

• Essential roof drain protection component
  The Zurn P100-DOME-CI is a cast iron replacement roof drain dome designed to protect roof drainage systems from debris while maintaining smooth water flow.
• Engineered for commercial roof systems
  Experts specify it for use with Zurn Z100 series 15" main roof drains, making it a standard choice for large commercial and institutional roofing assemblies.
• Durable cast iron construction
  Built from heavy-duty cast iron with a corrosion-resistant blue finish, it is designed to withstand harsh rooftop conditions, UV exposure, and mechanical impact.
• Debris control with reliable flow capacity
  The slotted dome design prevents leaves, gravel, and roofing debris from entering the drain while still allowing high-volume stormwater flow.
• Simple retrofit or replacement installation
  Drop-in design allows quick replacement of worn or damaged domes without disturbing the full roof drain assembly, minimizing maintenance downtime.
• Contractor-trusted fit and compatibility
  Precision-sized for Zurn 15" roof drain bodies, ensuring a secure fit and consistent performance across standard installations.
• Long service life in demanding environments
  The robust cast iron build is favored in high-traffic rooftops and exposed drainage systems, where durability and reliability are critical.
• Bottom line
  A heavy-duty, code-standard roof drain dome that delivers dependable debris protection, structural strength, and long-term performance for commercial roofing systems.

Q&A

Q: What is the Zurn P100-DOME-CI roof drain dome used for?
A: It is a cast iron replacement dome strainer designed for Zurn roof drains, used to protect drainage systems by blocking debris while allowing rainwater to flow efficiently into the roof drain body.

Q: What size is the Zurn 12-7/16" roof drain dome?
A: It is approximately 12-7/16" in length with an overall diameter around 10-1/4" to 12-1/2", depending on drain configuration, designed to fit standard Zurn 15" roof drain assemblies.

Q: What material is the P100-DOME-CI made of?
A: It is constructed from heavy-duty cast iron with a blue protective finish for durability and corrosion resistance in outdoor roof environments.

Q: What does this dome do in a roof drainage system?
A: It prevents leaves, trash, and large debris from entering the drain while maintaining high water flow capacity to avoid roof ponding and overflow issues.

Q: Where is it typically installed?
A: It is used on commercial and industrial flat or low-slope roofs as part of Zurn Z100 series roof drain systems.

Q: Is it a complete drain or a replacement part?
A: It is a replacement dome component only, intended to be installed on an existing compatible Zurn roof drain body.

Q: Why choose the Zurn cast iron dome?
A: It offers long-lasting durability, secure debris protection, and compatibility with Zurn’s high-capacity roof drainage systems for reliable stormwater performance.

Maintenance Tips

• Regular debris removal: Clear leaves, gravel, and sediment from dome openings to prevent roof drainage blockage.
• Inspect after storms: Check for impact damage, clogging, or displacement of the dome strainer.
• Verify secure seating: Ensure dome is properly seated on drain body to maintain full flow capacity.
• Clean periodically: Remove buildup on cast iron surface to prevent corrosion and restricted water flow.
• Check surrounding roofing: Ensure membrane and flashing around drain remain watertight.
• Monitor drainage performance: Watch for ponding water indicating partial blockage or reduced capacity.
• Corrosion inspection: Look for rust or coating wear and address early to extend service life.
• Seasonal maintenance: Increase cleaning frequency during heavy rainfall or leaf-fall seasons.