M-D Building Products Gaps & Joints M-D 71506 5/8" X 20' Backer Rod

The M-D Building Products 5/8 in x 20 ft Backer Rod for Gaps & Joints is a versatile gray foam backer rod designed to help fill large gaps and joints before applying caulk or sealant. Manufactured by M-D Building Products, this cushioned, flexible backer rod is ideal for use on walls and other surfaces where you need to create a smooth, professional finish. The closed cell foam construction helps prevent air and moisture infiltration, making it perfect for weatherstripping and insulation projects. This round backer rod is easy to install—simply press it into the gap or joint, then apply your caulk or sealant over the top. The 5/8 in diameter and 20 ft length provide ample material for a variety of home improvement and repair tasks. Whether you are sealing windows, doors, or expansion joints, this foam backer rod helps ensure a long-lasting, durable seal. Its gray color blends well with most surfaces, and the lightweight design makes handling and placement simple. Choose the M-D Building Products 5/8 in x 20 ft Backer Rod for reliable performance in your next project.