Description
What Is CEMpolyure FCP-45 Concrete Crack Repair?
CEMpolyure FCP-45 Concrete Crack Repair is a two-component, low-viscosity, solvent-based polyurethane used to repair non-moving horizontal cracks and other surface defects in concrete. Its fluid consistency allows it to penetrate narrow cracks while filling spalls, pop-outs, holes, gouges, and similar surface imperfections before the surface is ground, polished, coated, or returned to service.
The product cures quickly after mixing, making it well suited to projects where concrete repairs must be completed before diamond grinding, concrete polishing, or the application of coatings and other surface treatments. It can also be used as a pit grout during the concrete polishing process and accepts CEMcolor Packs when color matching exposed aggregate is required.
CEMpolyure FCP-45 is intended for non-moving concrete repairs. Before applying the product, confirm that the crack is non-moving and follow the manufacturer’s application recommendations.
What Types of Concrete Damage Can It Repair?
CEMpolyure FCP-45 repairs several common types of non-moving concrete damage, including horizontal cracks, spalls, pop-outs, surface pits, holes, gouges, and minor surface voids. Identifying the type of damage is one of the easiest ways to determine whether this product is the right choice for your repair.
Horizontal Cracks
Repair non-moving horizontal cracks before dirt, moisture, and debris collect within the damaged area. Filling these cracks creates a more uniform surface before grinding, polishing, or applying protective coatings.
Spalls
Restore areas where the concrete surface has broken away due to wear, impact, or weather exposure. Repairing spalls creates a smoother, more consistent surface for restoration or coating projects.
Pop-Outs
Concrete pop-outs can leave an uneven surface that becomes more noticeable after polishing or coating. Filling these damaged areas restores a smoother finish.
Surface Pits
Repair surface pits before concrete polishing or coating projects to create a smoother finish. CEMpolyure FCP-45 can also be used as a pit grout during the concrete polishing process when UV stability is not a concern.
Holes
Fill small holes caused by anchors, fasteners, impact damage, or surface deterioration before the next stage of the project. A properly repaired surface creates a more consistent base for finishing work.
Gouges
Repair gouges caused by heavy equipment, dragged objects, or mechanical damage before grinding, polishing, or coating the concrete. Restoring these defects improves overall surface consistency.
Minor Surface Voids
Fill minor surface voids that develop during concrete placement, finishing, or years of service. Repairing these imperfections creates a smoother, more uniform concrete surface before restoration or finishing.
Where Can CEMpolyure FCP-45 Be Used?
CEMpolyure FCP-45 is used on concrete surfaces where non-moving cracks, spalls, pits, and other surface defects need to be repaired before the next stage of work. The applications below represent some of the most common projects where this repair material is used.
Garage Floors
Restore damaged garage floors by filling non-moving cracks, spalls, and other surface imperfections before applying floor coatings or returning the surface to regular vehicle traffic.
Commercial Concrete
Repair damaged concrete in retail spaces, offices, schools, and other commercial properties where maintaining a safe, consistent walking or working surface is important.
Warehouse Floors
Repair cracks and surface defects in warehouse floors exposed to forklifts, pallet jacks, and continuous traffic. A smooth repair helps prepare the surface for continued daily use.
Interior Concrete Floors
Fill cracks, holes, and other surface damage on interior concrete floors before polishing, coating, or completing other restoration work.
Concrete Polishing Projects
Use CEMpolyure FCP-45 to repair cracks, pits, and surface imperfections before diamond grinding and polishing. It can also be used as a pit grout during the concrete polishing process when UV stability is not required.
Concrete Surface Preparation
Prepare damaged concrete before applying epoxy, polyurethane, decorative, or other concrete coating systems. Repairing surface defects first creates a more consistent foundation for the finished coating.
Industrial Facilities
Maintain concrete floors in manufacturing plants, workshops, and other industrial environments where routine concrete repairs are part of ongoing facility maintenance.
Is CEMpolyure FCP-45 the Right Choice for Your Project?
CEMpolyure FCP-45 is intended for repairing non-moving concrete damage before grinding, polishing, coating, or returning the surface to service. Use the guide below to determine whether it matches your repair project.
| If You Need to… | Recommendation |
| Repair non-moving horizontal cracks | ✔ Recommended |
| Fill spalls | ✔ Recommended |
| Repair pop-outs | ✔ Recommended |
| Fill surface pits before concrete polishing | ✔ Recommended |
| Diamond grind after the repair cures | ✔ Recommended |
| Color match exposed aggregate with CEMcolor Packs | ✔ Recommended |
| Repair moving or expansion joints | ✖ Not Recommended |
| Repair structural movement or active cracks | ✖ Not Recommended |
CEMpolyure FCP-45 is intended for non-moving concrete repairs where a fast-setting polyurethane repair material is needed before the next stage of work. If the concrete shows ongoing movement, structural cracking, or expansion joint movement, choose a repair product that’s specifically recommended for those conditions.
When Should You Use CEMpolyure FCP-45?
Use CEMpolyure FCP-45 when non-moving concrete damage needs to be repaired before the next stage of the project. Whether you’re preparing concrete for polishing, applying a coating, or reopening a high-traffic area, completing repairs first creates a smoother, more consistent surface.
Before Applying Decorative Coatings
Repair cracks, spalls, pop-outs, and other surface defects before applying epoxy, polyurethane, decorative, or other concrete coating systems. Preparing the concrete first creates a more uniform surface for the finished coating.
Before Concrete Polishing
Fill cracks, surface pits, and other imperfections before diamond grinding and polishing. CEMpolyure FCP-45 can also be used as a pit grout during the concrete polishing process when UV stability is not required.
When Fast Return to Service Matters
Choose CEMpolyure FCP-45 when repair work needs to be completed quickly so the concrete can return to service without unnecessary delays. This is especially useful in areas where downtime needs to be kept to a minimum.
During Concrete Surface Preparation
Repair surface defects before grinding, polishing, sealing, or coating the concrete. Completing repairs during surface preparation helps create a more consistent foundation for the next stage of work.
When Repairing Non-Moving Concrete Damage
Use CEMpolyure FCP-45 for horizontal cracks, spalls, pop-outs, holes, gouges, and other non-moving surface defects. If the damage involves moving joints or structural cracking, select a repair product that’s intended for those conditions instead.
Why Choose CEMpolyure FCP-45?
Choose CEMpolyure FCP-45 when your project requires fast, dependable repairs for non-moving concrete damage. Its low-viscosity formula, quick curing, and straightforward application make it a practical choice for concrete restoration, surface preparation, and concrete polishing projects.
Reaches Narrow Cracks More Easily
The low-viscosity formula flows into narrow, non-moving cracks and small surface defects that are difficult to fill with thicker repair materials. This creates a more complete repair before grinding, polishing, or coating the concrete.
Reduces Project Downtime
The fast-setting formula allows repaired areas to return to service sooner than many traditional repair materials. This is especially valuable where minimizing downtime is an important part of the project.
Eliminates an Extra Preparation Step
CEMpolyure FCP-45 does not require a separate primer before application. Removing this step simplifies the repair process and reduces preparation time.
Simplifies Mixing
The 1:1 mix ratio makes measuring and mixing straightforward for both small repairs and larger projects. Consistent mixing also helps produce more predictable repair results.
Keeps Polishing Projects Moving
Once the repair has cured, the surface can be diamond ground as part of the next stage of work. This allows concrete polishing projects to continue without unnecessary delays.
Supports Color-Matched Repairs
CEMpolyure FCP-45 accepts CEMcolor Packs, allowing the repair material to be tinted when blending repairs with exposed aggregate or surrounding concrete is important.
Works for Concrete Polishing Pit Repairs
CEMpolyure FCP-45 can be used as a pit grout during the concrete polishing process to fill small surface pits before grinding and polishing. This creates a smoother, more consistent finished surface where UV stability is not required.
Technical Specifications
Review the manufacturer’s published specifications to confirm that CEMpolyure FCP-45 matches your project requirements and application conditions.
| Specification | Details |
| Product Type | Two-Component Polyurethane Concrete Crack Repair |
| Chemistry | Solvent-Based Polyurethane |
| Mix Ratio | 1:1 by Volume |
| Appearance | Clear (Tintable with CEMcolor Packs) |
| Viscosity | Low Viscosity |
| Cure Time | Fast-Setting (Varies with Temperature and Humidity) |
| Grind Time | Approximately 15 Minutes or When Hard Set* |
| Return to Traffic | Approximately 1 Hour at 72°F (22°C) and 50% Relative Humidity* |
| VOC Information | Refer to the Manufacturer’s Technical Data Sheet (TDS) |
| Recommended Application Temperature | Refer to the Manufacturer’s Technical Data Sheet (TDS) |
| Packaging | Two-Component Kit |
* Grind time and return-to-traffic time vary with temperature, humidity, concrete condition, and job site conditions. Always refer to the manufacturer’s Technical Data Sheet (TDS) for complete application instructions, limitations, and performance information.
Application Overview
Applying CEMpolyure FCP-45 involves a few basic steps before the repaired concrete is ready for the next stage of work.
- Clean the repair area and remove dust, debris, and loose material.
- Mix Part A and Part B using the recommended 1:1 by volume ratio.
- Pour the mixed material into the crack, pit, spall, or other surface defect.
- Allow the material to cure before continuing with the next stage of the project.
- Diamond grind or finish the repaired area if required.
Always follow the manufacturer’s Technical Data Sheet (TDS) for complete mixing, application, curing, and safety instructions.
Product Documents
Download the manufacturer’s technical and safety documents for CEMpolyure FCP-45 below. These documents contain detailed application, performance, and safety information.
Technical Data Sheet (TDS)
Contains product specifications, surface preparation requirements, mixing instructions, application guidance, curing information, limitations, and recommended uses.
Safety Data Sheet (SDS) – Part A
Contains safety information for Part A, including handling, storage, personal protective equipment (PPE), first-aid measures, and emergency procedures.
Download: SDS Part A
Safety Data Sheet (SDS) – Part B
Contains safety information for Part B, including handling, storage, personal protective equipment (PPE), first-aid measures, and emergency procedures.
Download: SDS Part B
Frequently Asked Questions
Can CEMpolyure FCP-45 repair moving cracks?
No. CEMpolyure FCP-45 is intended for repairing non-moving horizontal cracks and other stable concrete surface defects. If the damage involves movement, expansion joints, or structural cracking, select a repair product that’s specifically recommended for those conditions.
Can CEMpolyure FCP-45 be used outdoors?
Yes, provided the application matches the manufacturer’s recommendations. Review the Technical Data Sheet (TDS) before use, especially if the repaired area will be exposed to prolonged UV exposure or demanding environmental conditions.
How soon can I diamond grind the repaired area?
Under normal conditions, the repaired area can typically be diamond ground in as little as 15 minutes, or once the material has fully hardened. Actual curing time varies with temperature, humidity, and job site conditions.
How soon can the repaired surface return to traffic?
Under normal conditions of 72°F (22°C) and 50% relative humidity, repaired areas typically return to heavy foot or vehicle traffic in about one hour. Cooler temperatures, higher humidity, and site conditions may extend curing time.
Does CEMpolyure FCP-45 require a primer?
No. CEMpolyure FCP-45 is applied without a separate primer, reducing preparation time before the repair begins. Prepare the concrete surface according to the manufacturer’s recommendations before application.
Can I add color to CEMpolyure FCP-45?
Yes. CEMpolyure FCP-45 accepts CEMcolor Packs, allowing the repair material to be tinted when blending repairs with exposed aggregate or surrounding concrete is preferred.
Can CEMpolyure FCP-45 be used before concrete polishing?
Yes. CEMpolyure FCP-45 is frequently used before diamond grinding and concrete polishing to repair cracks, surface pits, and other imperfections. It can also be used as a pit grout where UV stability is not required.
Is CEMpolyure FCP-45 compatible with decorative coatings?
Yes, when the coating manufacturer recommends its use over properly repaired concrete. Verify compatibility and follow the recommended surface preparation requirements before applying epoxy, polyurethane, or other decorative coating systems.
Explore more professional-grade decorative concrete products on The Decorative Concrete Store for concrete repair, surface preparation, decorative coatings, concrete sealers, and concrete polishing projects.
