M-D 71480 1/2 Inch X 20 Ft Backer Rod For Gaps & Joints - Polyethylene Caulk Saver

About This Product

Prepare your caulking projects properly with the M-D 71480 1/2 Inch x 20 Ft Backer Rod for Gaps and Joints.

This non-absorbent, closed-cell polyethylene foam rod is an essential pre-caulking material that helps you achieve professional, long-lasting results.

Use it to fill larger gaps and openings before applying caulk, preventing three-point bonding and ensuring your sealant adheres correctly to the joint sides for better flexibility and durability.

The 1/2-inch diameter by 20-foot length is ideal for a variety of applications including pavement cracks, wall joints, foundations, driveways, and sidewalks.

It acts as a filler and bond breaker, creating the proper depth for caulk while insulating and cushioning the area.

This helps reduce material usage and improves overall performance by allowing the caulk to expand and contract properly with temperature changes.

Easy to work with and reliable, this backer rod provides a sound, level surface for your caulking efforts.

It's recommended for expansion joints where movement is expected, helping to prevent cracks and drafts.

Whether you're a DIY homeowner tackling weekend projects or a professional contractor, this polyethylene backer rod is a simple yet effective way to improve the quality and lifespan of your sealing work.

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