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Drop In Fire Collars

Allproof Drop in fire collars are made from galvanised steel and installed in conjuction with intumescent sealent. Our product provides a simple and effective passive fire rating option for thin concrete floors or trapezoidal steel tray concrete floors. These floors feature profile changes on the underside of the slab and make it difficult to fire rate with a conventional fire collar fixed to the underside of a floor slab.

Allproof Passive Fire Intumescent Technology

Key Features
  • Installed and fixed from top side of slab
  • Can be retrofitted around pipe
  • Made from galvanised steel
NZ Made
NZ Made
NZ-Owned Business
NZ-Owned Business
Scope of Use
  • Thin concrete floors (minimum 70mm)
  • Trapezoidal steel tray concrete floors
  • Can be retrofitted
  • Installed and fixed from top side of slab
Limitations on Use

Installation of Allproof Passive Fire Protection Products must be carried out by contractors experienced in the principles of fire rated construction. Please ensure testing has been completed for specific install requirements.

Statement of Building Code Compliance

The product will, if employed in accordance with the supplier's installation and maintenance requirements, assist with meeting the following provisions of the building code:

  • Clause C3 Fire affecting areas beyond the fire source: Performance C3.9
  • Clause C4 Movement to place of safety: Performance C4.3

All performance requirements stated by AS1530.4 — 2014 and AS4072.1 — 2005.

Allproof fire collar product and technical data BRANZ Appraised — Appraisal No. 1088 [2019] 

In-Service History

This product has been used in a wide variety of projects using a com floor since its launch.

Most plumbing merchants who are located in areas that service tradespersons constructing multi level buildings (i.e. Auckland city centre) now stock this item on their shelves due to its popularity.

Other Performance Attributes

At the core of the Allproof passive fire protection product range is the advanced intumescent technology. This enables Allproof to offer products with performance and design advantages for engineers and installers of passive fire protection products.

Allproof’s intumescent material expands when exposed to heat and as its volume increases with significant expansion pressure, it produces a stable char. The intumescent char formed is a poor conductor of heat, retarding heat transfer and retaining the integrity and insulation of service penetrations through otherwise fire-resistance rated walls or floors.

BRANZ Appraised
BRANZ Appraised
Test Results
Test Results
C Protection from Fire compliant
Protection from Fire
Installation Details Link
BRANZ Appraisal No1088

1088 [2019]

Test Results and Installation: Passive Fire Protection Range

Nov 2019

Product Warranty


Masterspec Specification

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

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