ProShield Surface Coatings installs professional polyurea garage floor coatings in Raleigh, NC and evaluates every slab during the free on-site consultation. Most common cracks — hairline cracks and moderate surface cracks — can be filled and repaired as part of the standard preparation process before the coating is applied. Significant structural cracks may require additional evaluation. Request a free garage floor estimate to have your slab professionally assessed anywhere in Raleigh or the Triangle area.
What Types of Garage Floor Cracks Can Be Filled Before Coating in Raleigh, NC?
The majority of cracks that appear in residential garage floors in Raleigh and the Triangle area fall into the fillable category. Hairline cracks, narrow shrinkage cracks that formed as the original concrete cured, and moderate surface cracks that are stable and not actively growing are all candidates for professional crack filling before a garage floor coating is installed. These types of cracks are extremely common in concrete slabs throughout the Triangle area, where seasonal temperature swings cause repeated cycles of expansion and contraction. ProShield Surface Coatings uses professional-grade polyurea and polyurethane fill products to repair these cracks, creating a stable, flexible fill that bonds to the surrounding concrete and accepts the coating system properly.
Which Cracks May Indicate a Structural Problem With the Garage Slab in Raleigh?
Not all cracks are equal, and some types indicate underlying conditions that need to be addressed before a coating can be installed. Cracks with vertical displacement — where one side of the crack is higher than the other — suggest that sections of the slab have moved relative to each other, which can indicate soil settlement, erosion, or inadequate base compaction beneath the slab. Wide cracks that are actively growing or that appear alongside significant crumbling or spalling at the crack edges may indicate structural deterioration. These situations do not automatically mean a coating is impossible, but they do require an honest evaluation during the pre-installation consultation to determine the appropriate course of action. For a full breakdown of surface prep requirements, read our guide on why concrete grinding matters before coating.
How ProShield Handles Crack Repair During Garage Floor Coating Preparation in Raleigh
The preparation phase of every ProShield garage floor coating installation begins with diamond grinding the entire slab surface. This mechanical grinding process removes the top layer of concrete, including any existing sealers, contamination, and surface deterioration, and creates a clean, profiled surface that accepts the coating at maximum bond strength. During and after grinding, our crew inspects every crack in the slab and fills fillable cracks with the appropriate repair product. Wider or deeper cracks receive polyurethane foam or semi-rigid fill products that provide a stable, flexible repair. After filling, the surface is ground flush and cleaned before the coating system is applied.
Should You Wait to Get a Garage Floor Coating if Your Raleigh Garage Has Cracks?
Waiting is rarely the right answer for garage floors with cracking. Minor cracks tend to widen over time as the slab continues to experience thermal expansion, contraction, and vehicle loading. Getting a free evaluation sooner rather than later gives you the information you need to make the right decision for your floor. If the cracks are fillable, ProShield can schedule your installation and handle the repairs as part of the standard process. If additional evaluation is recommended, you will know that clearly before committing to any project. Browse our project gallery to see before-and-after examples of cracked slabs that received a full coating after professional preparation, and read our customer reviews to hear from Raleigh homeowners who went through this process.
Frequently Asked Questions: Cracked Garage Floor Coating in Raleigh, NC
Can you coat a garage floor that has cracks in Raleigh, NC?
Yes. In most cases, cracks in a garage floor do not disqualify the slab from receiving a professional polyurea coating. Non-structural hairline cracks and moderate surface cracks can be professionally filled and repaired as part of the preparation process before any coating is applied. ProShield Surface Coatings evaluates every garage floor during the free on-site consultation to determine whether cracks are cosmetic or structural and to recommend the appropriate preparation approach for your specific situation in Raleigh or the Triangle area.
What types of cracks can be filled before a garage floor coating?
Hairline cracks, shrinkage cracks, and moderate surface cracks that do not indicate active slab movement can typically be filled with professional polyurea or polyurethane crack filler products before a garage floor coating is installed. These repairs create a stable, level surface that accepts the coating system properly. The key distinction is between cracks that are stable and those that are actively widening or accompanied by vertical displacement between slab sections, which indicate ongoing structural movement that must be addressed before coating.
Which cracks prevent you from putting a coating on a garage floor?
Active structural cracks, cracks with vertical displacement between slab sections, and cracks associated with significant slab heaving or settlement typically need to be evaluated by a structural engineer before a garage floor coating is applied. These types of cracks indicate that the slab itself is experiencing ongoing movement, and applying a coating over them without addressing the underlying cause will result in the coating cracking and failing at those locations. ProShield will identify these situations during the free on-site consultation and provide an honest assessment of whether a coating is appropriate for your floor.
How does ProShield fix cracks before installing a garage floor coating in Raleigh?
ProShield Surface Coatings repairs fillable cracks as part of the standard garage floor preparation process. After diamond grinding the slab surface, our crew fills cracks using professional-grade polyurea or polyurethane injection or fill products that create a stable, flexible bond within the crack. The filled area is then ground flush with the surrounding concrete to create a smooth, level surface. The coating system bonds uniformly across the repaired areas.
Does crack repair cost extra for a garage floor coating in Raleigh?
Minor crack filling is typically included in the standard garage floor coating preparation process and does not add cost to most projects. More extensive crack repair, such as filling numerous or wide cracks, grinding down displaced sections, or addressing larger damaged areas, may add to the overall project cost. ProShield Surface Coatings provides transparent, detailed pricing in every free estimate, so you will know the full scope and investment before any work begins. There are no surprise charges after the project starts.
How long does crack repair add to a garage floor coating project?
For most residential garage floors with minor to moderate cracking, crack filling and repair adds very little time to the project. The grinding, crack fill, and preparation phases are all completed on installation day as part of the single-day installation process. More extensive repairs may require an additional preparation visit before the coating day, but this is the exception rather than the rule for typical residential garage floors in Raleigh and the Triangle area. ProShield communicates the full timeline clearly during the estimate so you can plan accordingly.
Can moisture in cracks affect a garage floor coating in Raleigh, NC?
Yes. Moisture present in cracks at the time of coating can interfere with proper adhesion and should be addressed before the coating is applied. This is connected to the broader issue of moisture coming through garage floors, which ProShield assesses during the free consultation using moisture testing. If active moisture is present in or around cracks, we will recommend allowing the slab to dry, addressing any drainage or waterproofing issues contributing to the moisture, and retesting before proceeding with the coating installation.