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Soft Backer Rod: Applications and Uses

August 20, 2018

A backer rod is a necessary component of construction since it is used in a number of applications, like flooring, stoneware, tiling, and window paneling. There are different types of backer rods but one of the most commonly used is the soft backer rod.


A soft backer rod is made up of a very fascinating composition, and can be used for a wide number of applications!


A soft backer rod is created from a bi-cellular and non-gassing material that gives it more flexibility and a wider range of use. This type of rod is often used in places that need sealing. It's a popular choice in construction applications because since it helps sealants perform at its highest capacity, prevents sealant adhesion and does not require any bond breaker.


Due to its unique properties and construction, a soft backer rod is used in a variety of applications, both conventional and non-conventional. Here are several examples:


  • Bridges: A soft backer rod helps with the stability and rigidity at the junction where a bridge's steel frame meets the pavement or road. This additional support assists in the development of a firm foundation.
  • Highway Pavements: Soft backer rods are also utilized during maintenance of highway pavement. They are placed in the gaps between concrete slabs which helps the structure handle the different loads and vibrations of passing vehicles.
  • Parking Decks: As these decks have different weights, they need to develop some insulation or sealant during construction. A soft backer rod helps with the insulation and also assists with providing a strong and stable frame.
  • Wall Partitions: Soft backer rods are used to provide a cushion between wall partitions. They are used to absorb stress, thus adding to the structural integrity of the wall.


These are but some of the many applications of a soft backer rod. If you require backer rods for a construction project, soft or not, we at Alcot Plastics have the products for you. With our quality products and expertise, we’re capable of helping you find the custom foam product perfect for your specific application.