
Metacaulk 1200 Firestop Sealant
Metacaulk 1200 is a single-component, general-use firestop sealant that cures to an elastomeric seal for joints where dynamic movement is expected, rated up to 4 hours to ASTM E1966 (UL 2079). It comes in caulk, self-leveling and mastic grades to suit vertical joints, horizontal floors and long joint runs.
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 1200 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.

Tremco Fyre-Sil Firestop Sealant
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
WFR2 is a fire-rated version of Emseal’s wall joint technology, combining watertightness and movement with tested fire resistance in one assembly.
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Wabo FlameGuard
Wabo FlameGuard combines expansion joint movement with tested fire resistance for floor and wall joints in rated assemblies.
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Metacaulk Pipe Collars
Metacaulk Pipe Collars are prefabricated, highly intumescent collars for open and closed through-penetration firestop systems on 1 1/2" to 6" plastic pipe, including PVC, CPVC, ABS and FRPP.
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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