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Large Diameter Roof Drains

These durable, long-lasting large diameter roof drains are designed to ensure a watertight building for years.

Key Features
  • Bronze base flange fits inside pipe with o-ring seal 
  • Waterproofing membrane clamped using 3x stainless screws and clamp ring 
  • Flat Grate (FCR) and Domed Grate (DRCR) available 
  • Overflow attachment available
  • Removable grate for easy down-pipe access without disturbing membrane 
  • Clamp Ring features a flush finish with membrane 
  • Suit pipe size 65mm, 80mm, 100mm, 150mm and 200mm
  • Independent Flow Rate Tested by BRANZ
NZ Made
NZ Made
NZ-Owned Business
NZ-Owned Business
Scope of Use
  • The product can come as a domed roof drain, overflow (flat or domed) and with a flat grate for use where space is tight
  • Designed to work with a membrane, either torch-on or liquid based.
In-Service History

This product is one of Allproof's original products, they have been selling this revision of the product for over 10 years.

It has been used in residential and commercial buildings for both private and public sector projects.

E2 External Moisture compliant
External Moisture
Independent Assessment
Independent Assessment
Test Results
Test Results
Installation Details
Product Warranty



A New Zealand owned company specialising in the manufacture of plumbing and drainage products and systems.

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