3/8″ x 20′
5/8″ x 20′
Soft Cell Backer Rod with Water-Resistant Skin
3/8″ x 20′
Joints deeper than 1/2″, concrete cracks, door and window frames, foundation sill plates, wall joints
30100 3/8″ x 20′
30110 5/8″ x 20′
Features and Benefits
Compress to fit cracks and joints More Info
Water-resistant More Info
Saves money by using less caulk More Info
Compatible with all substrates & sealants More Info
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Not sure which sealant, caulk, or other product is right for your job? Looking for the nearest location to buy products for your next home project? Don’t know exactly how to tackle your repair? We’re here to help.
Common 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.