BackerRods

BackerRods are a type of construction material used to provide backing and support for various building applications. Primarily made from expanded polystyrene (EPS) foam, they are designed to fill gaps and create a solid base for sealants, mortars, and other finishing materials. The lightweight nature of EPS makes them easy to handle and install, contributing to faster project completion.

These rods are commonly found in applications such as expansion joints in concrete, gaps between window and door frames and the surrounding wall, and as a backing for tile installations. Their compressible nature allows them to adapt to irregular surfaces and accommodate movement, preventing cracking and ensuring the longevity of the finished work. BackerRods are also chemically inert, meaning they do not react with most common building materials.

The manufacturing process of BackerRods involves extruding molten EPS into cylindrical shapes of varying diameters. This allows for a range of sizes to suit different joint widths and depths. Their closed-cell structure also provides a degree of insulation and moisture resistance. BackerRods are considered a cost-effective solution for creating a uniform and stable substrate, enhancing the overall performance and appearance of construction projects. They are readily available at most building supply stores and are a standard component in many professional construction practices.