BACKER ROD RECOMMENDED FOR ALL JOINT SEALANT APPLICATIONS.
Forms the desired concave sealant shape, controls proper sealant depth, acts as bonbreaker to prevent bottom sealant adhesion and prevents fluid sealant run-out to the bottom of the joint.

CLOSED CELL POLYETHYLENE FOAM, COMPRESSIBLE, NON-ABSORBENT.
Available in diameters from ¼” thru 4”.
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HEAT RESISTANT BACKER ROD FOR HOT APPLIED JOINT SEALANTS
Available in diameters from 3/8” thru 2”.
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OPEN CELL POLYURETHANE FOAM ROD.
Highly compressible, allows air to reach the underside of the sealant for a faster more even cure.
Not recommended for all sealant application.
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