3/8″ x 20′
5/8″ x 20′
1-1/8″x10′
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800-767-5656Common Questions From Our Network of Pros
In deep joints, filler rope serves two purposes. 1. It saves you money. Filler rope is pretty cheap, so using some of it (instead of more sealant) can save you time and money. 2. It creates ideal joint design. It serves as a “bond breaker” to ensure the sealant only has adhesion on two sides. This will extend the lifetime of the sealant.
It depends on the situation. Backer rod is a bit stiffer. Filler rope has more compressibility for irregular joints.