Metacaulk MC 150+ Firestop Sealant
Activated with fire exposure, Metacaulk MC 150+ is a general fire-rated sealant for construction joints and through penetrations. Prevents spread of flames/smoke/hot gases/water. All systems rated for up to 4 hours as per ASTM E814 (UL1479) & ASTM E1966 (UL 2079) test standards.
- Water-based and non-sag. VOC compliant. Protected in wet & dry stages against mold growth with a combination of biocides
- Flexible set and Excellent freeze-thaw. Cures to an elastomeric seal suitable where dynamic movement is expected
- For interior use & paintable. Safe & easy to use for most applications; No dilution/mixing is required. Easy to apply & retrofit. Can be applied with conventional caulking gun, bulk loading gun, troweled from pail, or pumped directly from pail
- STC rating 51
- Minimum 3-year shelf life and Intumescent