Backer Rod, 3/4" Roll (550 feet) Kits providing protection from holes and

providing protection from holes and gaps that might otherwise develop with a lower-quality finish

pollen and other airborne contaminants that dull the surface and encourage mold growth

appearance

1-Gallon Product Label

Backer Rod, 3/4" Roll (550 feet) Kits providing protection from holes and1 4" Roll (3,200 feet) Backer Rod is extruded closed cell polyethylene rod that is used in cracks, checks and gaps before filling them with sealants such as Perma Chink, Energy Seal and Check Mate 2. Caulk joints should not be more than 3 8 thick and Backer Rod provides a way to fill a deep crevice or gap while maintaining the proper sealant thickness for maximum performance. Backer Rod should also be used in checks over 1 4 wide before applying Check