Concrete Surface Profile
The surface looks smooth to the eye. Usually, it is too slick for a chemical bond. The details found at epoxy flooring allen tx all saints of america explain how we prepare the concrete slab for a heavy duty epoxy application in Allen, TX. Without the right texture, the coating will delaminate from the substrate within months.
Achieving the Correct Surface Profile
Mechanical adhesion depends entirely on the surface profile. A polished floor is a failed floor for any resin system. We use diamond grinding to remove the laitance and open the pores of the concrete. This process creates a sandpaper like texture that allows the primer to bite into the material. If the concrete is too hard or has a heavy sealer, the diamond grinding must go deeper to reach the aggregate. We check the profile to ensure the grit is consistent across the entire floor area.
Shot Blasting vs Grinding
Shot blasting uses steel shot to aggressively etch the surface. This method is effective for older slabs that have significant strength but need a deep profile. It is much more aggressive than standard diamond grinding. For lighter residential work in Allen, we often prefer grinding because it produces less dust and allows for better control over the fine details. Regardless of the tool, the goal is to create a profile that holds the base coat securely. We look for a profile similar to 60 or 80 grit sandpaper.
Preparing the Substrate
Before any resin goes down, we address every flaw in the slab. We perform crack repair and use a dedicated joint filler to level out any uneven spots. If there is a spall in the concrete, it must be filled and leveled so the topcoat remains flat. We also conduct a moisture test to ensure there is no rising dampness that will push the coating off. Using a calcium chloride test helps us verify the slab is dry enough for a polyaspartic or urethane system. Any trapped moisture will cause bubbles in the finished floor.
Layering the System
The build up starts with a high penetration primer. Once that is set, we move to the main body of the system. This might involve a solid color layer or a broadcast of flake to add thickness and durability. If the design calls for texture, we might use quartz sand to increase slip resistance. After the main layers are cured, a clear coat or a thick topcoat is applied to seal everything in. This layered approach ensures the bond is mechanical and chemical, making the floor resistant to heavy traffic and chemicals.