Description

The Bond-It Backer Rod 20mm x 300m Coil is a closed-cell polyethylene foam backing rod designed to improve joint design and extend the performance of sealants. Supplied in a long 300-metre coil, it is ideal for professional and large-scale applications where consistent joint depth and efficiency are essential.

Installed behind sealant joints, backer rod prevents three-sided adhesion and allows the sealant to move freely, reducing stress and improving long-term durability. The 20mm diameter makes it suitable for medium to wide joints commonly found in construction, glazing, and expansion joint applications.

Typical Applications

• Expansion and movement joints
• Glazing and façade sealing
• Construction and building joints
• Large-scale sealant installations
• Joint preparation for silicone, PU, and hybrid sealants

Why Use a Backer Rod?

Using a backer rod

• Reduces sealant consumption
• Ensures correct joint depth-to-width ratio
• Improves sealant performance and lifespan
• Helps prevent joint cracking and failure

Backer rod is a key component of professional joint design.

Why Buy from The Sealant Shop?

• Genuine Bond-It accessories
• Competitive trade pricing available
• Fast UK dispatch
• Ideal companion product for professional sealants

Benefits

How to Apply