Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Flexible Fire Resistive Duct Enclosures

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Fires related to cooking equipment represent the largest category of eating and drinking establishment fires in the U.S.

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC During the period from , there have been an average of 11,200 fires and $164 million in property losses per year.

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Approximately 4,600 of those fires were traced to kitchen equipment such as stoves, deep fat fryers, open fired grills and GREASE HOODS and DUCTS.

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Grease and Air Duct Enclosures

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC What is Grease and Air Duct Insulation? Traditional, Generic Materials Flexible Wraps Product Information Installation procedures Codes and approvals Summary

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC What is a Fire Resistive Grease and Air Duct Enclosure?

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Grease and Air Duct Flexible Fire Resistive Enclosure A high temperature insulation enclosure system designed to provide 1 and 2 hour fire rated shaft alternative and zero clearance to combustibles protection for commercial kitchen exhaust grease ducts. In HVAC air ventilation ducts, the insulation enclosure system provides a 1 or 2 hour shaft alternative to rigid board systems.

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Previously Used Systems Factory built enclosures Field flexible wrap or rigid board built enclosures Drywall enclosures

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Commercial Kitchen Grease & Air Ventilation Duct Enclosure Materials Factory Built Enclosure –A listed and labeled factory-built self contained grease duct enclosure system evaluated for reduced clearance to combustibles. Field Built Flexible Wrap or Board Enclosure –A listed and labeled field fabricated system for reduced clearances to combustibles and an alternative to a 1 or 2 hour fire resistance rated shaft enclosures for commercial kitchen grease and HVAC air ventilation ducts.

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Why is an Enclosure Necessary? Grease: Flammable Grease Vapors + High Temperature Operation = Hot, Fast Moving Fire Air: External Fire Attack (Room Fire Conditions)

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Performance Requirements Contain Internal Duct Fires and prevent heat transfer to nearby combustibles Repel External Fires from entering the duct and becoming a conduit of rapid fire spread Block Fire Prorogation through through penetration openings Limit Enclosure Material’s Surface Flammability

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Laboratory Listing Categories UL Classification –Grease (YYET) –Air Duct (HNLJ) –Fire Stop (XHEZ) –Product Flammability (BHWV) Omega Point Laboratories –Grease Duct (GD) –Air Duct (VAD) –Fire Stop (FS) –Product Flammability (Division 7)

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Grease Duct Enclosure Tests Grease Duct Fire Resistance - Internal (UL1978) Fire Resistance - Internal (AC101) Fire Resistance - External (ASTM E-119/UL263) Through-Penetration Fire stop (ASTM E-814/UL1479) Surface Flammability (ASTM E-84/UL723) Hot Surface (ASTM C411) Combustion Behavior (ASTM E 136) Thermal Conductivity “Aging” (ASTM C 518)

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Air Ventilation Duct Enclosure Tests External Engulfment Air Duct Test (ISO 6944) –Test representative of maximum width to height ratio intended for use Fire Stop Test (ASTM E814/UL 1479) –Establishes F & T rating Surface Flammability (ASTM E-84/UL723)

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Grease Duct Enclosure Internal Grease Duct Fire Test (UL 1978) 500°F (260°C) for 4 hours Max. Single TC rise is 117°F (65°C) if not in contact with duct or 90°F if enclosure is in contact with duct 2000°F (1093°C) for 1/2 hour; Max. single TC rise is 250°F (121°C) Accepted by ICCES (BOCA, SBCCI) in East and Mid-West U.S.

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Grease Duct Enclosure Internal Grease Duct Fire Test (AC101) 500°F (260°C) gasses into duct for 4 hours; max. temperature on surface under insulating pad is 117°F (65°C) above ambient 2000°F (1093°C) at duct test area for 1/2 hour; max. average temperature rise surface under insulating pad is 250°F (121°C), max individual temperature rise 325°F (198°F) Accepted by ICBO in Western U.S.

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Grease Duct Enclosure External Grease Duct Test – Full Engulfment ASTM E Hour engulfment plus hose stream test for integrity of duct ASTM E Hour through-penetration firestop test

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Grease Duct Enclosure Tests ASTM E84 Surface Burning Characteristics Flame Spread Rating must be < 25 Smoke Developed Rating must be < 450 Covers Core Insulation and Covering Material

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Performance Tests for Air Ducts ISO 6944 – Full engulfment test with a negative pressure on the duct. Duct must resist collapse during the test. ASTM E814 – Through Penetration Firestop Test Surface Flammability (ASTM E84/UL723)

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Flexible Wraps Review

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC High Temperature Insulation Blanket One or Two Layers Required 1 ½” or 2” Material Thickness Applied directly to Duct Surface Joints Overlapped 3” or alternate installation techniques available Filament Tape / Banding Attachment Design Features

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Available Product Forms Total Aluminum Foil Encapsulated Un-encapsulated Blanket Aluminum Foil Faced Blanket One Side

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Flexible Wrap Features Durable Aluminum Foil Scrim Covering Resists Tearing Resists Grease or Water Condensation Absorption Minimizes Fiber Exposure Total Foil Encapsulated:

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Installation Details

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Installation Details Backing Material: Un-faced Flexible Wrap Blanket Scrap or 3 pcf Mineral Wool Two Layers Flexible Duct Insulation Fire Stop Sealant

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Installation Details Measure to include overlaps

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Installation Details Aluminum taped exposed cut edges

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Installation Details 1 or 2 Layers 3” Overlap at seams or approved alternate installation techniques Tape exposed cut blanket edges

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Installation Details Blanket thickness should not be compromised

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Installation Details Banding snug, but not to cut into blanket

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Installation Details Access Doors

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Codes & Approvals

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Code Language –”Exception” Requirement Code Must be Listed & Labeled SystemNFPA 96, IMC Material Covers All Sides of Duct NFPA 96, IMC Firestop = F&T Rating NFPA 96, IMC Zero Clearance Option IdentifiedNFPA 96

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Other Wrap Opportunities Plenum Wrap –Plastic Pipe, Concealed Spaces Conduit Wrap –Emergency Feeder Lines Cable Tray Wrap –Industrial Control Systems

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC About the IFC Founded in 1990, the IFC is a nonprofit organization of industry experts committed to making buildings safer through passive fire containment. With membership composed of manufacturers, firefighters, distributors, and users of passive fire protective materials and systems, IFC aims to promote passive fire containment through awareness, education and development of codes and standards. Website Voting Members

Saving Lives and Property Through Fire and Smoke Containment ©2004 IFC Available educational seminars on our website include….. Firestop 101 – An introduction to firestopping Curtain Wall Protection Firestop System Selection Flexible Duct Wrap Systems Fire Protection of Construction Joints Commonly Made Mistakes