
Metacaulk 1000 Intumescent Firestop Sealant
Metacaulk 1000 is a highly intumescent, water-based sealant and smoke seal for construction joints and through-penetrations, with systems rated 1 to 4 hours to ASTM E814 (UL 1479), UL 2079 and CAN/ULC-S115. It is a non-sag, paintable formula with an STC rating of 62.
Made by RectorSeal
RectorSeal is a CSW Industrials company and describes itself as a global leader in the life safety and passive fire protection industry. Its Metacaulk brand of firestop products is designed to protect against the spread of fire, smoke and toxic gases in buildings, and its products are tested and certified by independent third-party agencies such as UL and FM.
Where this product fits
- Stocked at or transferred between all six branches
- Volume pricing by the case or pallet
- Product specialists to confirm fit for your application
Technical documents
Download the current technical data sheet for Metacaulk 1000 Intumescent Firestop Sealant.
Data sheet (PDF)Other firestop sealants we carry
Same type of product from other manufacturers, all supplied through our branches. Our specialists can help match movement capability, colour and substrate.

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Tremco Fyre-Sil is a one-part firestop silicone sealant for fire-rated joints and through-penetrations, tested to seal against flame, smoke and gas.
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Tremco TREMstop Acrylic Firestop Sealant
Tremco TREMstop Acrylic is a water-based, intumescent firestop sealant for sealing fire-rated penetrations and construction joints.
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Different firestop approaches for related conditions. Always confirm the tested system and rating for your assembly.

WFR2
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Wabo FlameGuard
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Metacaulk Pipe Collars
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View productNeed help with a firestop system? Tell us the assembly, penetration and rating and a product specialist will help match a tested system.
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