Product Description

The KM Backer Rod Series includes both Closed Cell Polyethylene Round Backer Rod
and Open Cell Polyurethane Backer Rod. These compressible, flexible backup materials are
inserted into joints to control depth, improve sealant performance, and reduce sealant consumption.
They are widely used in glazing, window and door frames, expansion joints, precast construction, and pavement repairs.

Key Benefits

• Closed Cell Polyethylene Backer Rod – Non-absorbent, chemically inert, resists oils, solvents, and water. Provides an effective bond breaker for proper sealant tooling.
• Open Cell Polyurethane Backer Rod – Excellent compression and recovery properties. Prevents bubbling and ensures consistent sealant.
• Sealant Compatibility – Compatible with silicone, polyurethane, polysulfide, acrylic, and other common sealants.
• Improves Performance – Minimizes sealant usage, prevents three-sided adhesion, and enhances flexibility in joints.
• Versatile Applications – Suitable for glazing, windows, doors, curtain walls, pavements, log construction, and precast joints.

Packaging

• Closed Cell Backer Rod: Density ~28 kg/m³; colour White/Grey; available in a wide range of diameters.
• Open Cell Backer Rod: Density ~27 kg/m³; available in multiple diameters.