Foam Backer Rod 1-1/8” x 75’ (Pack of 3)

The Foam Backer Rod is a high-quality, non-gassing backing material designed to support elastomeric and other applied caulking sealants.

It helps control sealant depth while creating the proper hourglass-shaped sealant profile for improved adhesion, flexibility, and long-term performance.

Designed for professional construction and sealing applications, Foam Backer Rod provides reliable support, faster curing, and consistent sealant performance in expansion joints, construction joints, and various building applications.

Key Features

• Non-gassing foam backing material.

• Controls sealant depth for proper application.

• Helps create an optimal hourglass sealant configuration.

• Improves sealant performance and durability.

• Allows air access to both sides of the sealant for uniform curing.

• Resistant to oil, gasoline, and most solvents.

• Does not stain surfaces or produce odors.

• Easy installation for faster sealing applications.

• Economical solution for construction and repair projects.

Common Applications

• Expansion joints.

• Construction joints.

• Concrete walls, floors, and partitions.

• Pre-cast concrete applications.

• Bridge construction.

• Parking decks.

• Curtain walls and glazing systems.

• Log home construction.

• Highway construction and pavement maintenance.

• Floor joints with self-leveling sealants.

Product Information

Frequently Asked Questions (FAQ)

Q1. What is Foam Backer Rod used for?
Foam Backer Rod is used as a backing material for sealants to control sealant depth and help create the correct hourglass-shaped sealant profile for improved performance.

Q2. Why is the hourglass sealant profile important?
The hourglass shape allows the sealant to expand and contract properly, improving flexibility and reducing stress on the sealed joint.

Q3. Can Foam Backer Rod be used with self-leveling sealants?
Yes. Foam Backer Rod is commonly used in floor joints and other applications where self-leveling sealants are installed.

Q4. Is Foam Backer Rod resistant to chemicals?
Yes. It is resistant to oil, gasoline, and most solvents, making it suitable for many construction and sealing environments.

Q5. How does Foam Backer Rod improve sealant performance?
It helps maintain proper sealant thickness, supports uniform curing, and improves the durability and long-term performance of sealed joints.