Metacaulk 150+ Firestop Sealant

DESCRIPTION: All-purpose, heat-expanding sealant for construction joints and through-penetrations.


  • Excellent freeze-thaw
  • Non-sag, flexible cure; cures to an elastomeric seal suitable where dynamic movement is expected
  • Versatile interior use; water-based seal requires no mixing or dilution; paintable
  • Protected in wet & dry stages against mold growth with a combination of biocides
  • Safe and easy to use for most applications (including retrofit); can be applied with conventional caulking gun, bulk loading gun, troweled from pail, or pumped directly from pail

PERFORMANCE: UL Classified system up to 4 hrs; tested in accordance with ASTM E814 (UL 1479), ASTM E1966 (UL 2079), ASTM C834, ASTM E1399, ASTM E90, and CAN/ULC-S115; VOC compliant (CDPH Standard Method v1.2); tested by a third party independent laboratory to the ASTM G21 standard with Fungal Growth Rating results of zero; STC rating 65



Revit Details


Metacaulk 150+ Through Penetration

Metacaulk 150+ Joint

Product Variations

  • 66383 - Metacaulk 150+, 30oz
  • 66385 - Metacaulk 150+, Sausage 20.2oz
  • 66389 - Metacaulk 150+, 5gal Pail
  • 66424 - Metacaulk 150+ Gray, 20.2oz
  • 66425 - Metacaulk 150+ Gray, 5gal Pail
  • 66648 - Metacaulk 150+, 10.3oz



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