The Complete Contractor Guide to Concrete Repair Products

Choosing the right concrete repair product is one of the most important steps in preparing a slab for an epoxy, polyaspartic, polyurea, overlay, sealer, or industrial flooring system.

Even a high-performance coating system can fail when it is installed over loose concrete, contaminated cracks, deep spalls, weak repairs, or improperly prepared patching material.

The challenge is that not every repair requires the same solution.

A small surface pit does not need the same material as an eight-inch-deep damaged section. A vertical stair repair requires a different consistency than a pourable patch for a level floor. An industrial facility exposed to chemicals and forklift traffic also has different requirements than a residential garage.

Selecting the correct concrete repair product can help contractors:

• Reduce installation delays

• Improve coating adhesion

• Minimize grinding and finishing time

• Restore damaged concrete more effectively

• Reduce callbacks

• Return the area to service faster

• Match the repair material to the project environment

This contractor guide compares five professional concrete repair products:

• Citadel Fortification Formula Kit Fast

• Rust-Oleum Fast-Patch

• Rust-Oleum 5494 System TurboKrete

• Concrete Saver Pro Structural Concrete Repair

• Citadel Concrete Repair Compound

How to Choose the Right Concrete Repair Product

Before selecting a repair material, evaluate the condition of the concrete and the requirements of the project.

Consider the following:

What type of damage is being repaired?

Identify whether the project involves:

• Hairline cracks

• Chased cracks

• Pits or pinholes

• Small surface flaws

• Large spalls

• Deep holes

• Broken edges

• Vertical damage

• Overhead repairs

• Industrial floor damage

How deep is the repair?

Repair depth has a major effect on product selection and material usage. Some products are designed for shallow surface imperfections, while others can be installed several inches deep in a single application.

Is the repair horizontal, vertical, or overhead?

Pourable repair products are generally better suited for contained horizontal areas. Vertical and overhead repairs require a thicker material that can hold its shape without sagging.

How quickly must the area return to service?

Contractors should confirm when the repair must be ready for:

• Foot traffic

• Vehicle traffic

• Forklift traffic

• Grinding

• Topcoating

• Chemical exposure

These timelines are not always the same.

What will be installed over the repair?

Determine whether the repaired area will receive:

• Epoxy

• Polyaspartic

• Polyurea

• Urethane

• Acrylic sealer

• Decorative overlay

• Industrial flooring system

Some repair products must be sanded or ground before topcoating. Others may allow a coating to be installed before the repair reaches full cure.

Quick Concrete Repair Product Comparison

Choose Citadel Fortification Formula Kit Fast for:

• Chased cracks before coating

• Fast-turnaround flooring projects

• Deep cracks filled partially with silica sand

• Repairs that need to be ground flush quickly

• Cold-temperature applications

• Small spalls or edge repairs when mixed with silica

Choose Rust-Oleum Fast-Patch for:

• Hairline cracks

• Small pits and pinholes

• Minor spalls

• Bug holes

• Surface imperfections

• Vertical cracks

• Small repairs that do not require mixing equipment

Choose TurboKrete for:

• Heavy-duty industrial floor repairs

• Deep horizontal patches

• Areas exposed to physical abuse

• Areas with intermittent chemical exposure

• Repairs requiring extremely high compressive strength

• Facilities where downtime must be minimized

Choose Concrete Saver Pro Structural Concrete Repair for:

• Vertical repairs

• Overhead repairs

• Stairs and broken edges

• Curbs, walkways, patios, and pool decks

• Deep holes in concrete or masonry

• Repairs that need to be shaped, molded, or shaved

Choose Citadel Concrete Repair Compound for:

• Large holes and spalls

• Level horizontal surfaces

• Pourable, self-leveling repairs

• Fast-return-to-service projects

• Damp, but not wet, concrete

• Repairs that will receive epoxy, polyurea, polyaspartic, acrylic, or alkyd coatings

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1. Citadel Fortification Formula Kit Fast

Citadel Fortification Formula Kit Fast is a two-component, 100% solids polyurethane crack repair compound designed for extremely fast concrete repairs.

It is particularly useful when preparing cracks before an epoxy, polyaspartic, polyurea, or other resinous floor coating.

At approximately 72°F, the product can become dry-hard in five to ten minutes. Foot traffic may be allowed in approximately ten minutes, while vehicle traffic may be allowed in approximately 30 minutes.

Fortification Formula Kit Fast can also be applied at temperatures as low as -5°F, making it a useful option when colder conditions would slow down many conventional repair products.

Best Applications for Fortification Formula Kit Fast

This product is well suited for:

• Chased concrete cracks

• Cracks before resinous flooring installation

• Deep cracks partially filled with dry silica sand

• Small spalled areas

• Concrete edge repairs

• Fast-return-to-service installations

• Cold-temperature concrete repairs

Fortification Formula Performance Information

• Resin type: Polyurethane

• Solids: 100% by weight and volume

• Mixing ratio: 1:1 by volume

• Working time: Approximately five minutes at 77°F

• Dry-hard time: Approximately five to ten minutes

• Foot traffic: Approximately ten minutes

• Vehicle traffic: Approximately 30 minutes

• Estimated coverage: Approximately 230 linear feet per activated gallon at ¼-inch wide by ¼-inch deep

• Compressive strength: 5,600 psi

• Compressive strength with silica added: 6,200 psi

Surface Preparation and Installation

Small hairline cracks should be chased using a V-shaped diamond crack-chasing blade. The crack should be opened to a minimum width of approximately ¼ inch.

Remove dirt, oil, grease, loose concrete, and other contaminants that could interfere with adhesion. If oil has soaked into the crack edges, grinding may be required when cleaning alone is not sufficient.

For deep cracks, dry silica sand can be placed into the crack while leaving approximately ¼ inch of depth near the surface. The activated Fortification Formula is then poured over the silica.

For spalled areas or edge repairs, dry silica sand can also be mixed into the activated liquid to create a thicker, trowelable material. Do not use more than one part silica to one part activated liquid.

Because the product cures quickly, only mix the amount that can be placed within approximately five minutes.

After the repair has cured and can no longer be indented with a thumbnail, excess material can be ground flush with the surrounding concrete.

Important: Fortification Formula Kit Fast must be ground or sanded before it is topcoated.

When Fortification Formula May Not Be the Best Choice

Fortification Formula is an excellent option for cracks and fast repairs, but its short working time requires preparation and organization.

The crack should be completely cleaned, chased, vacuumed, and ready before Parts A and B are combined.

For large, open floor areas that need to be poured and leveled, a cement-based pourable repair may be easier to install. For major industrial damage, an aggregate-filled epoxy mortar may be more appropriate.

2. Rust-Oleum Fast-Patch

Rust-Oleum Fast-Patch is a two-component epoxy putty designed for minor cracks, small spalls, low spots, pits, vertical cracks, and other surface imperfections.

It is one of the most contractor-friendly products for small repairs because it does not require a drill, mixer, or specialized application equipment.

Equal amounts of Part A and Part B are combined at a 1:1 ratio and mixed with a putty knife until the color is uniform.

Best Applications for Fast-Patch

Fast-Patch is well suited for:

• Hairline cracks

• Small pits

• Bug holes

• Minor spalls

• Surface flaws

• Low spots

• Vertical cracks

• Slab-edge damage

• Small repairs before coating

• Indoor repairs where strong odors are a concern

Fast-Patch bonds to several substrates, including concrete, wood, fiberglass, and asphalt.

Fast-Patch Performance Information

• Resin type: Polyamine-cured epoxy

• Solids: 100% by weight and volume

• Mixing ratio: 1:1

• Induction time: None

• Working time: Up to 30 minutes

• Full cure: Approximately eight to twelve hours

• Foot traffic: Approximately eight to twelve hours

• Vehicle traffic: Approximately eight to twelve hours

Can You Coat Over Fast-Patch Before It Fully Cures?

One of the primary advantages of Fast-Patch is that most coatings can be installed directly over shallow and narrow repairs before the material reaches full cure.

For larger repairs greater than approximately ½ inch in both depth and width, allow the

Fast-Patch to cure fully. The repair should then be sanded with 80-grit sandpaper to remove the gloss and create a suitable profile before coating.

This makes Fast-Patch especially useful for contractors who need to correct minor surface imperfections without significantly delaying the rest of the coating installation.

When Fast-Patch May Not Be the Best Choice

Fast-Patch is primarily intended for localized repairs and minor concrete damage.

Extensive deep repairs may be completed more efficiently with a pourable cement-based repair or an aggregate-filled epoxy patching compound.

Because coverage depends on the number, length, width, and depth of the repairs, material requirements should be estimated by repair volume rather than general square footage.

3. Rust-Oleum 5494 System TurboKrete Concrete Patching Compound

TurboKrete is a 100% solids, resin-rich epoxy and aggregate patching compound designed for concrete floors exposed to physical abuse and intermittent chemical exposure.

Among the products covered in this guide, TurboKrete has the highest published compressive strength at 13,400 psi.

It is intended for heavy-duty repairs where durability, chemical resistance, and reduced facility downtime are important.

Best Applications for TurboKrete

TurboKrete is a strong option for:

• Industrial concrete floors

• Warehouses

• Manufacturing facilities

• Food and beverage facilities

• Areas with forklift traffic

• Deep horizontal holes

• Large spalls

• Physically abused concrete

• Areas exposed to occasional chemical spills

• Repairs requiring high compressive strength

TurboKrete is a stand-alone patching material and does not require a sealer for exposure to moderate chemical spills.

Its 100% solids epoxy formulation is also odorless, making it useful in facilities where solvent odors cannot be tolerated.

The product complies with USDA FSIS sanitation performance standards for food-establishment facilities.

TurboKrete Performance Information

• Compressive strength: 13,400 psi

• Flexural strength: 3,632 psi

• Tensile strength: 2,124 psi

• Water absorption: 0.037%

• Linear shrinkage: 0.1%

• Pull-off adhesion: 375 psi

• Pot life: Approximately 30 minutes

• Topcoat time: Approximately 2.5 to four hours

• Foot traffic: Approximately 1.5 to four hours, depending on patch thickness

• Vehicle traffic: Approximately six to eight hours

• Full chemical exposure: Approximately three days

TurboKrete Repair Depth and Coverage

TurboKrete can be installed up to eight inches thick in a single horizontal application.

Published coverage includes:

• Large kit: Approximately 7.5 square feet at ½-inch thickness

• Small kit: Approximately 3.75 square feet at ½-inch thickness

These coverage rates make TurboKrete easier to estimate for larger-volume repairs.

Does TurboKrete Require a Primer?

Priming is only necessary when repairing areas less than ½ inch deep.

For shallow repairs, a small portion of the mixed Part A and Part B resin is reserved before the aggregate is added. The resin is brushed onto the prepared repair area before the complete epoxy mortar is installed.

For repairs greater than ½ inch deep, a separate primer is not listed as necessary.

TurboKrete Mixing Requirements

TurboKrete should not be mixed by hand.

The material should be mixed using a ½-inch drill equipped with a bird-cage mixer.

Parts A and B are first combined. The aggregate is then added gradually while mixing.

Dumping all the aggregate into the resin at once can make the material more difficult to mix and finish.

After mixing, the repair material is placed immediately and finished with a steel hand trowel.

TurboKrete Chemical Resistance

Published immersion testing lists excellent resistance to several substances, including:

• Kerosene

• 10% sulfuric acid

• Toluene

• Motor oil

• Propylene glycol

• Fresh water

Very good resistance is also listed for substances including:

• Salt water

• 10% sodium hydroxide

• Gasoline

• Mineral spirits

• Methanol

• Ammonia

Chemical exposure should always be evaluated according to concentration, temperature, duration, and whether the exposure involves occasional spills or continuous immersion.

When TurboKrete May Not Be the Best Choice

TurboKrete is a heavy-duty industrial repair material. It may be more product and labor than necessary for small hairline cracks, pinholes, or cosmetic surface imperfections.

It is also intended for horizontal applications. Vertical and overhead repairs may require a repair product with a thicker consistency that can hold its shape.

4. Concrete Saver Pro Structural Concrete Repair

Concrete Saver Pro Structural Concrete Repair is a fast-setting, cement-based patching material made from Portland cement, aggregates, and additives.

Unlike pourable repair products, it develops a thick, putty-like consistency that can be placed by hand or trowel.

The material can be shaped, molded, and shaved after its initial set, making it especially useful for vertical, overhead, and formed repairs.

Best Applications for Structural Concrete Repair

This product is suitable for:

• Vertical concrete

• Overhead repairs

• Stair edges

• Curbs

• Walkways

• Patios

• Pool decks

• Basement floors

• Garage floors

• Concrete and masonry

• Interior and exterior repairs

• Repairs greater than ⅛ inch deep

Structural Concrete Repair can fill holes up to seven inches deep in a single application.

Structural Concrete Repair Performance Information

• Composition: Portland cement, aggregates, and additives

• Working time: Approximately five to seven minutes at 75°F to 80°F

• Initial set: Approximately ten to fifteen minutes

• Final set: Approximately twenty to twenty-five minutes

• Vehicle traffic and topcoat: Approximately 24 hours

• Coverage: Approximately 1.5 square feet at ¼-inch thickness

• Compressive strength at 24 hours: 3,000 psi

• Compressive strength at seven days: 5,350 psi

• Long-term published compressive strength: 6,150 psi

• Flexural strength: 917 psi average

Surface Preparation and Installation

The repair area should be free from:

• Dust

• Paint

• Dirt

• Oil

• Loose concrete

• Debris

• Other bond-breaking contaminants

For horizontal repairs, creating an approximately ¾-inch notch is recommended to improve adhesion.

The prepared surface should be pre-wet before application. No standing water should remain, but the concrete should stay moist while the material is being installed.

The complete three-pound bag is mixed with approximately 12 ounces of water. Do not exceed 14 ounces of water.

The material is kneaded for approximately one minute until it reaches a thick, putty-like consistency.

Force the material into the prepared surface to create complete contact. Slightly overfill the repair area and allow the product to reach its initial set.

The material can then be shaved to follow the shape of the surrounding concrete.

When Structural Concrete Repair May Not Be the Best Choice

This product requires approximately 24 hours before vehicle traffic or topcoating.

Contractors working under a same-day coating schedule may need a repair product with a faster topcoat window.

Its thick consistency is useful for shaping but is not intended to self-level across broad horizontal areas.

5. Citadel Concrete Repair Compound

Citadel Concrete Repair Compound is a fiber-reinforced, Portland cement-based repair material designed for large holes and spalls on level concrete surfaces.

The product is mixed with water to create a pourable slurry. Once installed, it self-levels and generally requires minimal troweling.

Best Applications for Concrete Repair Compound

This product is well suited for:

• Large holes

• Deep spalls

• Level concrete floors

• Garage floors

• Commercial floors

• Interior and exterior concrete

• Fast-return-to-service repairs

• Repairs that will receive a resinous coating

• Damp, but not wet, concrete

Concrete Repair Compound can be installed from a feather edge up to four inches deep in a single application.

Concrete Repair Compound Performance Information

• Composition: Fiber-reinforced Portland cement

• VOC content: 0 grams per liter

• Mixing ratio: Three to five parts powder to one part water by volume

• Pot life: Approximately five to ten minutes at 70°F

• Minimum application temperature: 40°F

• Foot traffic: Approximately 30 minutes

• Vehicle or forklift traffic: Approximately two hours

• Compressive strength after one day: 2,900 psi

• Compressive strength after seven days: 5,075 psi

• Compressive strength after 28 days: 6,525 psi

Coverage by Repair Depth

One 10-pound kit provides approximately:

• Four square feet at ¼-inch depth

• Two square feet at ½-inch depth

• One square foot at one-inch depth

• 0.5 square feet at two-inch depth

• 0.25 square feet at four-inch depth

These coverage rates can help contractors estimate material requirements for large spalls and damaged floor sections.

Can Citadel Concrete Repair Compound Be Coated?

Concrete Repair Compound can be topcoated with several water-based and solvent-based coatings, including:

• Epoxy

• Polyurea

• Polyaspartic

• Acrylic

• Alkyd coatings

The minimum published topcoat time is approximately 30 minutes.

However, deeper repairs, cooler temperatures, and higher humidity may increase the time required before coating.

The repair turns light gray as it dries. Before topcoating, remove any contamination and lightly abrade the surface with sandpaper or a wire brush.

Mixing and Application Considerations

Only mix the amount of material that can be placed within approximately ten minutes.

Gradually add the powder to the water while mixing continuously with a drill and mixing blade.

Thoroughly scrape the sides of the container and break up any dry lumps.

Once the material has been mixed, it should be installed immediately. Do not re-stir the material after curing has started, as this may weaken the final repair.

For heavy-wear areas, prepare the edges of the repair to avoid leaving a weak feather edge.

Which Concrete Repair Product Should Contractors Choose?

The correct product depends on the damage, repair depth, surface orientation, traffic requirements, coating schedule, and project environment.

Best Product for Cracks Before Epoxy or Polyaspartic Flooring

Use Citadel Fortification Formula Kit Fast when the crack can be chased, filled, cured quickly, and ground flush before coating.

Use Rust-Oleum Fast-Patch for smaller cracks, pits, pinholes, and minor surface flaws that can be filled with a putty knife or squeegee.

Best Product for Large Horizontal Holes and Spalls

Use Citadel Concrete Repair Compound for a pourable, self-leveling cement-based repair up to four inches deep.

Use TurboKrete when the project requires industrial-grade epoxy mortar, high compressive strength, chemical resistance, or repair depths up to eight inches.

Best Product for Vertical or Overhead Concrete Repair

Use Concrete Saver Pro Structural Concrete Repair when the repair must be shaped, molded, or held in place on a vertical or overhead surface.

Fast-Patch may also be used for smaller vertical cracks and localized surface damage.

Best Product for High-Traffic Industrial Areas

TurboKrete is the strongest published option in this comparison, with a compressive strength of 13,400 psi.

It is designed for physically abused concrete floors, forklift traffic, industrial facilities, and intermittent chemical exposure.

The complete environment must still be evaluated. A repair product is only one part of a complete industrial flooring system.

Fastest Concrete Crack Repair Product

Fortification Formula Kit Fast offers the fastest published return-to-service time in this group:

• Foot traffic in approximately ten minutes

• Vehicle traffic in approximately 30 minutes

Its rapid cure also means that the repair area must be fully prepared before the material is mixed.

Concrete Repair Surface Preparation

Even the correct repair material can fail when it is installed over improperly prepared concrete.

Before beginning a repair, inspect the following conditions.

Remove Unsound Concrete

Loose, deteriorated, weak, or delaminated concrete must be removed.

A strong repair product installed over weak concrete may still fail when the substrate

beneath it breaks away.

Remove Contamination

Oil, grease, old coatings, curing compounds, dirt, salts, and other contaminants can interfere with adhesion.

Contaminated crack edges may need to be mechanically ground instead of simply washed.

Create a Proper Repair Profile

Some cracks must be chased to create enough width and depth for the repair product to bond correctly.

Large spalls may need squared or notched edges to prevent weak feather edges in heavy-wear areas.

Measure the Repair

Measure the approximate:

• Length

• Width

• Depth

• Total repair volume

Material requirements increase quickly as repair depth increases.

Confirm Moisture Conditions

Some repair products can be installed over damp concrete, while others require a dry surface.

Standing water should not remain unless the manufacturer specifically allows it.

Determine Whether the Crack Is Moving

A repair material can restore the visible surface, but it does not stop slab settlement, expansion, structural movement, or ongoing moisture problems.

Active or structural cracks may require additional evaluation before they are treated as a standard surface repair.

Common Concrete Repair Mistakes

Filling Cracks Without Chasing or Cleaning Them

Dust, oil, contamination, and weak concrete edges can prevent the repair material from developing a strong bond.

Using a Surface Filler for a Deep Repair

Deep holes may require silica sand, aggregate, a cement-based structural repair, or an epoxy mortar designed for deep placements.

Mixing Too Much Fast-Cure Material

Several products in this guide have working times of ten minutes or less.

Mixing more material than can be installed within the working time may result in wasted product, difficult finishing, or material hardening inside the container.

Adding Too Much Water

Excess water can change the consistency and reduce the performance of cement-based repair products.

Always follow the published mixing ratio.

Topcoating Without Profiling the Repair

Some resin-based repairs cure to a hard, smooth surface.

When the technical data sheet requires sanding or grinding before topcoating, skipping that step may reduce coating adhesion.

Ignoring Repair Orientation

A pourable product may work well on a contained horizontal floor but may sag or run when used on a vertical repair.

Ignoring the Topcoat Window

Foot traffic, vehicle traffic, and topcoat readiness are different cure milestones.

Confirm the correct topcoat time before continuing with the flooring installation.

Frequently Asked Questions About Concrete Repair Products

What is the best concrete crack repair product before an epoxy floor?

Citadel Fortification Formula Kit Fast is a strong option for chased cracks that need to cure quickly and be ground flush before coating.

Rust-Oleum Fast-Patch may be easier to use for small pits, hairline cracks, bug holes, and minor surface flaws.

The best option depends on crack width, depth, contamination, movement, and the flooring system being installed.

Which concrete repair product has the highest compressive strength?

Of the products compared in this guide, TurboKrete has the highest published compressive strength at 13,400 psi.

What should contractors use for deep concrete holes?

TurboKrete can be applied up to eight inches thick in a horizontal repair.

Concrete Saver Pro Structural Concrete Repair can fill holes up to seven inches deep.

Citadel Concrete Repair Compound can be installed up to four inches deep.

Product selection should also consider repair orientation, traffic, chemical exposure, topcoat timing, and finishing requirements.

What is the best product for vertical concrete repair?

Concrete Saver Pro Structural Concrete Repair is designed for vertical and overhead repairs. Its thick consistency allows it to be shaped, molded, and shaved to match the surrounding surface.

Fast-Patch is another option for smaller vertical cracks and localized imperfections.

Can concrete repairs be coated the same day?

Several of these products allow same-day coating under suitable conditions:

• Fortification Formula Kit Fast cures in approximately 10 to 15 minutes but must be profiled before topcoating.

• Shallow Fast-Patch repairs may be coated before full cure.

• Citadel Concrete Repair Compound may be topcoated after a minimum of approximately 30 minutes.

• TurboKrete may be topcoated in approximately 2.5 to four hours.

• Concrete Saver Pro Structural Concrete Repair requires approximately 24 hours before topcoating.

Actual cure times can change based on repair depth, temperature, humidity, and jobsite conditions.

Can a concrete repair product fix an active structural crack?

A repair material may fill and restore the visible area, but it does not stop continued structural movement.

Cracks caused by settlement, foundation movement, expansion, or other structural conditions should be evaluated before they are treated as a standard surface repair.

Get Help Choosing the Right Concrete Repair Product

The correct concrete repair product can save time during installation, improve the performance of the finished flooring system, and reduce the risk of future callbacks.

Platinum Concrete Coatings of Texas carries professional products for:

• Concrete crack repair

• Pits and pinholes

• Large spalls

• Deep holes

• Vertical and overhead repairs

• Industrial floors

• Fast-return-to-service projects

• Surface preparation before epoxy, polyaspartic, polyurea, urethane, and overlay systems

Contractors in Houston, Katy, San Antonio, Austin, Corpus Christi, East Texas, Louisiana, and surrounding service areas can contact our team for product selection assistance, material estimates, technical support, and professional concrete repair products.

When requesting a recommendation, provide:

• Repair length, width, and depth

• Whether the repair is horizontal, vertical, or overhead

• Interior or exterior location

• Traffic requirements

• Chemical exposure

• The coating or flooring system being installed

• Required return-to-service time

Platinum Concrete Coatings of Texas

18703 W Little York Rd.

Suite 103 Katy, TX 77449

(832) 593-6096

www.platinumcoatingsoftexas.com

PRODUCT SPECIFICATION DISCLAIMER

Product specifications, coverage rates, cure times, and performance values are based on manufacturer technical data sheets. Actual results may vary based on temperature, humidity, surface condition, repair dimensions, mixing, application methods, and jobsite conditions. Always review the current technical data sheet and safety data sheet before installation.