PRODUCT SPECIFICATIONS.

Specification for CL4FIRE Fire Rated Grease Duct
1 or 2-Hour Ventilation Air Ductwork
or up to 2-Hour Fire Rated Metal Piping

 

Applicable fire rating standards

CL4FIRE NFPA-96 – standard for Ventilation Control & Fire Protection for Cooking Operations
CL4FIRE CAN/ULC-S1​44 Standard Method of Fire Resistance Test - Grease Duct Assemblies
CL4FIRE ISO-6944 Duct ‘A’ Standard with 1 or 2-hour external duct fire rating
CL4FIRE ULC-S115-95 – Firestop testing standard
CL4FIRE ULC-S102 for 25/50 Flame Spread & Smoke Development Rating


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Grease Ductwork shall be tested to CAN/ULC-S144 Canadian internal fire requirements and ISO-6944 Duct ’A’ standard. Product to be listed for both internal and external fire rating. System requires a minimum of 1-layer of CL4FIRE Single Layer 3" (76mm) thick Grease Ductwrap insulation or alternately 2-layers of CL4FIRE 1 1/2" (38mm) thick ductwrap insulation installed with snugly butted seams staggered between layers and installed in strict accordance with QAI listed CL4FIRE system F405-1-4.

1-hour Fire Rated Ventilation Ductwork shall be tested to ISO-6944 Duct ‘A’ standard and consist of 1-layer of CL4FIRE soluble fibre thermal insulation installed with seams snugly butted per QAI Listed CL4FIRE system F405-1-1.

Up to 2-hour Fire Rated Ventilation Ductwork shall be tested to ISO-6944 Duct ‘A’ standard and consist of 1-layer of CL4FIRE soluble fibre thermal insulation installed with 3” overlapped seams per NRC tested and QAI listed CL4FIRE system F405-1-1.

Emergency generator exhaust systems shall be fire-rated for up to 2-hours using 2-layers of CL4FIRE Wrap with snugly butted seams staggered between layers and installed in strict accordance with QAI listed CL4FIRE system F405-1-1. Note: 1st layer to be installed unencapsulated to prevent initial odour associated with heated poly-backed foil scrim.

All firestop of CL4FIRE protected grease duct or up to 2-hour fire-rated ductwork shall be firestopped in strict accordance with QAI listed CL4FIRE systems.

All CL4FIRE Fire Protection Thermal Insulation material shall be applied directly to the ductwork in strict accordance with the listed system and manufacturer’s instructions.

 

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*CL4FIRE fire-rated thermal insulation is a registered trade name of CL4 Inc.
For further details contact Larry Whitty (519) 204-9416 or support@cl4fire.com