Backer Rod for Wide Joints: Closed-Cell vs Open-Cell and Tooling Shapes That Last
Introduction Backer rod is a foam filler placed in wide joints to back up sealant and create a proper shape. This DIY intro keeps it simple: choose the type and size that fit your joint, and don’t oversize. By keeping the joint clean and dry, you get a better seal and a cleaner finish. Use […]
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