Backer Rod for Wide Brick Joints: Open vs Closed Cell and Correct Depth
Introduction Backer rod is a foam spacer you push into a wide brick joint before sealing, to set the right depth for the sealant. Choice between open-cell and closed-cell matters for moisture and flexibility; open-cell is softer, closed-cell resists water better. For a DIY job, pick the type based on the joint’s exposure and consult […]
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