Product Data Sheet

MSDS

Type WF300 Caulk is a latex based, high solids firestop caulk.

This material, when properly installed, effectively seals penetra-tion openings in wood frame construction against the spread of fire, smoke and combustion byproducts.

Type WF300 Caulk is a single stage intumescent caulk. When exposed to elevated temperatures, WF300 expands rapidly to seal off voids left by the burning or melting of combustible materials.

WF300 adheres tenaciously to common construction materials such as lumber and gypsum board as well as typical penetrant materials.

APPLICATIONS

Type WF300 Caulk is used to seal through penetrations and gaps in fire resistance rated wood frame construction such as floor/ceilings and walls or partitions. Most common penetrating items were successfully tested with WF300.

WF310	09710	10.1 oz. tube
WF320	09720	20 oz. tube
WF329	09729	29 oz. tube
WF305	09705	5 gallon pail

• Red color for easy identification.
• Waterbased for easy cleanup.
• UL Classified for 1 or 2 hours.
• Intumescent = Expands up to 5X.
• Adheres to Common Building Materials
• Tested to ASTM E 814