Surface Preparation & Application:
Refer to the current UL Fire Resistance Directory for complete information or alternative approvals. The
firestop system details will cover the required sealant depths, necessary amount of packing material and the permitted joint size or annular space. For exact “F” and “T” ratings and uses, ALWAYS refer to detailed drawings in the current UL Fire Resistance Directory or visit www.ul.com to access online information.
1. Apply sealant to clean, dry surfaces free of frost, grease and oil in temperatures abov
2. Cut nozzle at 45º angle to desired bead size and load into conventional caulking gun.
3. Hold cartridge at 45° angle and fill the opening around the penetrant (annular space) or the linear opening in the joint with the minimum specified thickness of sealant.
4. Do not apply to surfaces previously painted or treated with a sealer, curing compound, water repellent, or other coating without first getting confirmation from the coating manufacturer that their coating is
compatible with DAP® Fire Stop Sealant. Remove coatings as required. Normally DAP® Fire Stop
Sealant does not require priming for most common building materials. However, some special surfaces may require a primer. We recommend a trial application before starting a project to test adhesion.
For Best Results:
• Apply in temperatures above 40°F.
• Store in a cool dry place above 70ºF.
• Do not allow product to freeze.
• For annular space exceeding 13/16”, a backer support material of mineral wool is required, unless otherwisespecified in the assembly configuration.
• Recommended only for use in passive fire containment systems specifically listed or approved for DAP Inc. in the UL Fire Resistance Directory. Do not apply over damp or contaminated surfaces. Not for use in
stoves, fireplaces or other areas routinely exposed to high heat or flames, or for ASTM E 136 applications.
Immediately remove all excess sealant and smears with Xylol or Toluol before sealant cures.
DO NOT use solvents to remove product from skin.