519 767 2899

Request Quote
Get Your Free Quote


Backer Rods

Alcot Plastics Ltd. is a leading manufacturer and supplier of polyethylene foam backer rods in Canada. Founded in 1983, we have decades of experience in manufacturing flawless polyethylene foam products. We have established ourselves as industry leaders through dedication and exceptional product quality. We use only the best materials to ensure durability and efficiency. Your search for reliable backer rods in Canada ends here. 

Our backer rods are available in 1/4“ to 1 ¼” diameters that are packaged in rolls, and thicker diameters of 1 ½” to 4” that come in cartons of 6-foot length backer rod.

Benefits of Backer Rods 

Backer rods are essential components in various construction and industrial projects. They offer numerous benefits, including:

Ensuring Optimal Joint Performance 

Backer rods are used as a foundation for sealants, especially in concrete precast buildings. These long, flexible, and cylindrical rods provide the right depth and shape for effective joint sealing. Proper depth and shape are crucial for the sealant to effectively fill the gaps and make the structure strong. What’s more, backer rods also help prevent three-sided adhesion, which reduces overall stress on the sealant and prolongs its lifespan.

Excellent Insulation 

Improper insulation leads to increased energy costs. The closed-cell structure of the backer rods helps create an effective barrier against air and moisture penetration. Backer rods are often used for pre-sealing window and door frames owing to their insulation properties. 

Cost-Effective Solution 

By effectively filling cracks and gaps, backer rods reduce the amount of sealants required. Lesser usage of sealants means more savings for contractors. The exceptional insulation properties also make backer rods cost-effective by reducing energy costs.

Applications of Backer Rods 


Construction Industry 

Engineers and contractors use backer rods for sealing expansion joints, concrete structures, doors, and windows. The ability of polyethylene foam backer rods to contract and expand without breaking makes them perfect for offering long-lasting seals. 

Civil Engineering and Infrastructure 

In civil engineering projects, backer rods are used as part of sealing solutions for highways, airport runways, and other critical structures. Backer rods are also extensively used to fix gaps in bridges, highways, and pavements. The ability of foam backer rods to resist extreme weather conditions makes them ideal for civil engineering and infrastructure applications. 

Log Cabins And Timber Structure

Log cabin and timber structure joints are sealed effectively using backer rods. The flexible soft rods accommodate the natural movement of the wood while preventing drafts and water penetration.

Marine Applications

Backer rods are made of closed-cell polyethylene foam, thus making them water and moisture-resistant. They are used in non-submerged marine applications like sealing decks and hatches on boats. They provide waterproofing and vibration dampening without disintegrating over time.

Solar Panel Installations

Weatherproofing solar panel systems are crucial for their optimal utilization. Backer rods are used to seal gaps around solar panels mounted on roofs. The soft and flexible rods help keep solar panels safe from moisture and water ingress.

Why Choose Backer Rods from Alcot Plastics Ltd. 

Uncompromising Quality 

Quality is at the heart of everything we do at Alcot Plastics Ltd. We use the finest materials and sophisticated machinery to guarantee uncompromising quality to our clients. Our backer rods are durable, effective, and resistant to breakage due to contraction or expansion.

Customization Capabilities 

We offer an extensive selection of backer rods in various diameters, lengths, and densities to suit your specific project requirements. Talk to us if you need backer rods in custom dimensions and we will be glad to provide you with exactly what you are looking for. 

Quick Turnaround 

Our tried and tested production techniques allow us to run orders of all sizes without creating excessive waste. This means that we can deliver your order, irrespective of its size, with a quick turnover time. Call us today to place your order!