If you've ever filled a large gap with caulk, only to watch it pull away from the edges as it dries, you've experienced one of the primary reasons that backer rod exists. Backer rod does more than ...
Backer rod conserves crack filler Just cut and place Ideal for use with Flexon and Crack-Fil (also from Garon) Use backer rod that is 1/4-in. larger than the width of the crack Garon Products ...
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