Backer Rod
High-quality Backer Rod made from closed-cell polyethylene foam for expansion joints, concrete joints, glazing systems, and sealant applications. Flexible, moisture-resistant, and designed to improve sealant performance while reducing sealant consumption.
Key Features
- Closed-Cell Foam Structure
- Lightweight & Flexible
- Moisture Resistant
- Controls Sealant Depth
- Improves Joint Performance
- Easy Installation
- Durable & Long Lasting
- Reduces Sealant Consumption
Specifications
| Material | Closed-Cell Polyethylene Foam |
| Type | Backer Rod |
| Shape | Round Foam Rod |
| Color | Grey |
| Usage | Joint Filling & Sealant Backing |
| Feature | Moisture Resistant |
Applications
Frequently Asked Questions
What is backer rod used for?
Backer rod is used to fill deep gaps and expansion joints before applying a sealant. It controls the depth of the sealant, ensuring it performs optimally while preventing the sealant from adhering to the bottom of the joint.
Why is a closed-cell foam backer rod preferred?
Closed-cell polyethylene foam is non-absorbent and moisture-resistant, meaning it won't wick water into the joint. It also prevents air bubbling in the sealant during curing.
How does it improve sealant performance?
By preventing three-sided adhesion, the backer rod acts as a bond breaker. This allows the sealant to stretch and compress freely with the movement of the building materials without tearing.
What diameters are available?
We stock standard diameters ranging from 6 mm up to 30 mm to accommodate various joint widths. Custom diameters are available upon request for specialized construction projects.
Can it be used in glazing systems?
Yes, backer rods are widely used in window glazing systems, door frame installations, and curtain wall constructions to provide a backing for silicone or polyurethane sealants.
How do I select the right size backer rod for a joint?
As a general rule of thumb, you should select a backer rod that is approximately 25% larger in diameter than the width of the joint. This ensures a tight friction fit so the rod doesn't move when applying the sealant.
Ready to Order Backer Rod in Bulk?
Contact Virag Trading Co. today for competitive wholesale pricing, custom specifications, and rapid delivery across Gujarat.