What is an 'intumescent' firestop?

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ASMACO Firestop Intumescent Acrylic Sealant - Civil Defence Approved

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LCI Intumescent Firestop Sealant

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SpecSeal® SSS Intumescent Firestop Sealant

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Specified Technologies LCI Firestop Intumescent Sealant Tubes

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SpecSeal® LCI Intumescent Firestop Sealant

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Metacaulk Firestop Sealants

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LCI Intumescent Firestop Sealant Installation

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WF300 Intumescent Firestop Caulk Installation

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Intumescent Firestop In Action: Electrical Box Insert

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SSS Intumescent Firestop Sealant Installation

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Intumescent Firestop Plug

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LCI Intumescent Firestop Sealant Installation

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Testing an Expansive Firewall Pipe Collar (Intumescent Graphite)

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Not a flamethrower testing on intumescent firestop collar

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Firemac FM Firestop Intumescent Sealant

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3M Firestop - Intumescent Products

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SSB Intumescent Firestop Pillows Installation

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How to Firestop Plastic Pipes Using QuelCoil Intumescent Pipe Wrap \u0026 Fire Batt

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Installing a Firestop Sealant Tips

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