WB Rubber assesses concrete slab condition, repairs cracks, fills depressions, and grinds high spots before rubber flooring installation across Texas. Concrete that is not level and properly prepared causes rubber flooring to fail prematurely, bond poorly, and develop surface problems that cannot be corrected without removal. We solve the concrete first.
Surface cracks in concrete must be repaired before rubber flooring is installed. A crack that is not filled transfers stress to the rubber layer above it and creates a visible line or ridge at the surface. WB Rubber fills surface cracks with appropriate patching compounds to produce a continuous substrate that supports the rubber flooring without transferring slab movement to the finished surface.
Low spots in a concrete slab create air pockets under rubber flooring when adhesive is used, or soft spots that compress underfoot when floating installations are used. We identify low areas during the pre-installation assessment and fill them with patching compound or leveling material to bring them flush with the surrounding slab surface.
High spots, ridges, and raised cracks create bumps in rubber flooring that become trip hazards and visual defects. They also cause uneven wear as foot traffic and equipment loads concentrate on the raised areas. WB Rubber grinds down high spots, ridges, and protrusions using concrete grinders to produce a flat surface that the rubber flooring can bond to evenly.
Rubber flooring that is installed over an uneven concrete surface bonds inconsistently, develops bubbles or separations over time, and wears unevenly. The result is a flooring system that looks and performs well for a short period before visible failures develop. Proper concrete leveling before installation is not preparation overhead. It is what determines whether the rubber flooring meets its expected service life.
We do not assume concrete is ready for rubber flooring. Before every installation, we assess the slab for cracks, low spots, high spots, contamination, moisture issues, and structural concerns. This assessment drives the scope of preparation work required. Clients get a clear picture of what the concrete needs and why before any work begins.
Not all concrete cracks are the same. Surface cracks are cosmetic or stress-relief fractures that can be filled and covered without concern. Structural cracks indicate that the slab is moving, settling, or carrying load imbalances that filling alone cannot address. WB Rubber distinguishes between the two. Surface cracks are repaired as part of our standard preparation. Structural cracks are flagged so the client understands the condition of their slab before rubber flooring covers it.
Concrete leveling before rubber flooring installation is a preparation process that addresses every deviation from flat in the existing slab surface. This includes cracks, low spots, high spots, ridges, and any surface contamination that would prevent rubber flooring from bonding correctly. The goal is a concrete surface that is flat, sound, and clean so the rubber flooring that goes down on top of it performs exactly as the manufacturer and the installer intend.
WB Rubber begins every rubber flooring project with a condition assessment of the existing concrete. We walk the area with a straightedge and evaluate the surface for the types of defects that need correction. Some slabs require minimal preparation. Others have significant issues that need to be addressed before any flooring material is installed. We identify what the slab needs during the assessment so the scope and cost of preparation work are clear before the project begins.
Crack repair is a common preparation task in Texas concrete slabs. Heat cycling, expansive clay soils, and moisture variation cause concrete to crack over time. Surface cracks that are not filled allow the rubber flooring to follow the crack profile, producing a visible line or ridge at the finished surface. They also create paths for moisture to migrate under the rubber from below. We fill surface cracks with patching compound and allow proper cure time before proceeding with installation.
High spots and ridges are addressed with concrete grinding equipment. Grinding removes material from raised areas to bring them flush with the surrounding slab. This is necessary for rubber flooring adhesion applications where an uneven surface prevents full contact between the adhesive and the rubber backing. It is equally necessary for floating installations where high spots create hard points that concentrate wear and create surface defects over time. For more on surface profiling work, see our surface profiling page. Cleaning the slab before and after leveling work is handled through our subfloor cleaning service.
One of the most important assessments WB Rubber performs during concrete evaluation is distinguishing between surface cracks and structural cracks. These two types of cracking look similar on the surface but have very different implications for what the concrete can support and what the rubber flooring installation needs to account for.
Surface cracks, also called non-structural or cosmetic cracks, occur in the upper layer of the concrete and do not indicate movement or instability in the slab as a whole. These are common in Texas slabs due to thermal expansion and contraction cycles, minor shrinkage during the original pour, and normal aging. Surface cracks are typically narrow, do not show vertical offset between the two sides, and do not widen or change over time. They can be filled and covered with rubber flooring without concern about the cracks continuing to grow and affecting the installation above them.
Structural cracks are different. They occur when the slab is moving, settling unevenly, or carrying loads that it is not designed to handle. Signs of structural cracking include vertical displacement between the two crack faces, cracks that are wider than a quarter inch, multiple parallel cracks concentrated in an area, and cracks that have grown or changed since the slab was originally poured. Rubber flooring installed over an active structural crack will eventually show that crack as a ridge or valley at the surface as the slab continues to move.
WB Rubber does not cover structural cracks without informing the client of the condition. Our assessment identifies which cracks are surface issues that we can repair as part of standard preparation and which cracks indicate conditions that the client should evaluate further before proceeding. This is part of operating honestly in the business of protecting floors for the long term.
For self-leveling compound options when low spots are large or numerous, see our self-leveling compound page. For all our ground leveling services, visit ground leveling.
Common questions about concrete leveling from WB Rubber customers.
