Rectorseal's family of UL approved Metacaulk^® Firestopping Products is specifically designed to fill voids in fire-rated walls or floor assemblies. Many of the products have intumescent properties and expand when exposed to heat, forming a high-strength insulating char. Metacaulk products contain a combination of biocides that protect the product in both the cured and non-cured state against mold growth. The intumescent firestop products comply with required environmental exposure testing of accelerated aging and high humidity, as per UL 1479 Fire Test of Through-Penetration Firestops. In the event of fire, Metacaulk sealants will restrict the spread of flames, smoke, hot gases and water.

 Watch the Metacaulk intro video 

Features/Benefits:

• Over 1200 Tested UL Systems
  
• On-Site UL Testing & Research
  
• No Poisons or Harmful Chemicals
  
• Meets Requirements for LEED Accreditation Points
• Complies with UL 1479 Accelerated Aging Requirements
  
• Excellent Freeze/Thaw Capabilities
• The most cost effective products to fit every need