Full definition
Rubber flooring installation is a meticulous process that involves adhering rubber flooring—either in rolls or tiles—to a properly prepared concrete substrate. This installation method is critical for ensuring durability, safety, and performance in various environments, particularly in commercial and industrial settings. The first step is to verify that the concrete substrate is properly cured for at least 28 days, ensuring it is dry (with moisture content below 4% as determined by the calcium chloride test according to ASTM F1869), level (with a maximum deviation of 3 mm over a 3 m straightedge), and clean of debris and contaminants. This preparation is essential for creating a stable foundation for the rubber flooring, which can otherwise lead to premature failure or detachment.
Once the substrate meets these conditions, the surface must be treated to enhance adhesive bonding. Common methods include grinding or shot-blasting the concrete to open its pores and create a mechanical bond profile. Depending on the adhesive manufacturer's specifications, applying a primer may be necessary to improve adhesion further. After preparing the adhesive, typically a water-based acrylic for standard applications, a polyurethane for heavy traffic areas, or epoxy for wet areas, it is spread onto the substrate using a V-notch trowel, creating a 2-3 mm bead.
The adhesive must then be allowed to tack, with open time varying from 5 to 30 minutes based on environmental conditions and adhesive type. When laying the rubber flooring, installers should start from the center of the room and work outward, ensuring uniform application and minimizing the risk of air pockets. After positioning the flooring, a 68 kg (150 lb) three-section roller is used to roll over the surface, ensuring full adhesive transfer and eliminating any trapped air. To achieve a seamless finish, especially with homogeneous rubber flooring, seams should be sealed using a heat welding rod or seam sealer, ensuring that the flooring remains intact and moisture-resistant over time. The flooring should acclimate in the installation environment, ideally at temperatures above 18°C, for 24 to 48 hours before installation. The full curing of the adhesive typically takes between 24 to 72 hours before the area can be subjected to foot traffic, ensuring optimal performance and longevity of the flooring system.