APF CastorCrete SL $106.99 $149.00

APF CastorCrete SL: Professional Urethane Cement for Extreme Duty Floors APF CastorCrete SL is a gauge rake and trowel applied cementitious polyurethane slurry, installed at 1/8 to 1/4 inch thickness to protect concrete from extreme physical, thermal, and chemical abuse. It resists impact and abrasion, stands up to steel wheeled cart traffic, and is unaffected by hot cooking oils, animal fats, and common solvents. It is formulated to accommodate the difference in thermal expansion between concrete and coating, and it holds up to constant service temperatures up to 200 degrees Fahrenheit. CastorCrete SL is a rapid turnaround, one step system, installed without a primer in typical applications and returned to service quickly. It is made from sustainable raw materials, contains low VOC, and is available with an optional antimicrobial additive to help inhibit fungal and microbial growth. Key Features Resists thermal cycling: withstands steam, hot water, and fluctuating temperatures Durable surface: handles steel wheeled carts, impact, and abrasion Green concrete friendly: can be applied to fresh concrete as early as 7 to 10 days old Low odor and sanitary: suited to hygienic environments and food handling areas Optional topcoats: compatible with multiple topcoat systems for added protection Recommended Uses Food and beverage manufacturing plants Meat, poultry, and fish processing areas Commercial kitchens and food prep areas Pharmaceutical production facilities Loading docks and material handling areas Sanitary and wash down environments Technical Specifications Specification APF CastorCrete SL Chemistry Cementitious polyurethane slurry Installed thickness 1/8 to 1/4 inch Complete kit weight 42 pounds (Parts A, B, C, and D) Compressive strength 8,500 psi Tensile strength 1,400 psi Flexural strength 2,700 psi Shore D hardness 75 to 80 Tabor abrasion (CS 17 wheel, 1000 g load, 1000 cycles) 32 mg loss Service temperature Up to 200 degrees Fahrenheit Application range 45 to 90 degrees Fahrenheit VOC 35 g/L Flammability when bonded to concrete Self extinguishing Concrete moisture tolerance May be applied to concrete indicating 100% relative humidity under ASTM F2170 Green concrete May be applied after approximately 7 to 10 days at 70 degrees Fahrenheit Dry to touch Approximately 12 hours Full service 24 to 36 hours Shelf life 1 year from date of manufacture, unopened Colors stocked by One Stop Epoxy Light Gray, Dark Gray Compatible Topcoats For added chemical, abrasion, or UV resistance, CastorCrete SL can be top coated once cured. From our current in stock lineup, APF Epoxy 600 and APF Epoxy Novolac 900 are both compatible epoxy options, with Novolac 900 reserved for the most aggressive chemical exposure. For a polyaspartic topcoat, Poly Gloss 85 gives a 22 minute working time, and Poly Gloss 85 Slow Go extends that to 90 minutes for larger areas. Frequently Asked Questions Does CastorCrete SL need a primer? No. It installs as a one step system directly on properly prepared concrete, without a separate primer coat, which helps it return to service quickly. Can I use it on green or high moisture concrete? Yes. It may be applied to concrete as early as 7 to 10 days old at 70 degrees Fahrenheit, and to substrates indicating 100% relative humidity under ASTM F2170, provided the concrete is otherwise clean and structurally sound. Can I install part of a kit and save the rest? No. Each kit is proportioned as a complete 42 pound unit and must be used as a whole. Dividing a kit into partial batches will not cure or perform correctly. Do I need to grind the concrete first? Yes. The concrete must be mechanically prepared to an ICRI CSP 3 profile. Acid etching is not recommended for this product and will void the manufacturer warranty. See the TDS and SDS tab above for the official technical documents, the Instructions tab for full mixing, surface preparation, and application steps, and the How much do I need? tab to calculate kit quantities for your project. Orders ship free to the 48 contiguous states, and most orders ship out the same or next business day.

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Urethane Cement

Urethane Cement Flooring for Commercial Kitchens, Loading Docks, and Heavy Duty Floors

Urethane cement is a thick, cementitious polyurethane flooring material made for interior concrete floors exposed to conditions that can exceed the limits of a standard epoxy coating. It is commonly used in commercial kitchens, food and beverage processing plants, washdown areas, loading docks, high forklift traffic aisles, pharmaceutical facilities, and industrial floors exposed to hot water, steam, cooking oils, animal fats, chemicals, moisture, abrasion, and repeated impact. One Stop Epoxy currently carries APF CastorCrete SL, a professional grade urethane cement slurry installed from 1/8 inch to 1/4 inch thick. Orders ship free to the 48 contiguous states, and most orders ship out the same or next business day.

Quick answer: Choose urethane cement when a concrete floor must handle thermal cycling, frequent washdowns, high moisture, loading dock traffic, forklifts, steel wheeled carts, dropped materials, repeated impact, hot cooking oils, animal fats, or demanding chemical exposure. For decorative floors, garages, warehouses, and dry service areas that do not face those conditions, 100% Solids Epoxy Resin or a complete Epoxy Flooring System is usually the better fit.

Ready to order? Shop APF CastorCrete SL Urethane Cement, available from One Stop Epoxy in Light Gray and Dark Gray.

What Is Urethane Cement?

Urethane cement, also called cementitious urethane, cementitious polyurethane, polyurethane concrete, or urethane mortar, combines polyurethane resin chemistry with cement and graded aggregate. It is installed much thicker than a typical epoxy coating and is formulated to move more closely with the concrete during rapid temperature changes, which is what makes it a dependable flooring material where heat, moisture, impact, heavy traffic, and aggressive cleaning occur together.

Urethane cement is not the same product as a thin urethane topcoat, such as our own One Stop WB Urethane. A urethane topcoat is normally rolled over another coating at a thin film thickness. Urethane cement is a complete mortar or slurry layer, installed directly over properly prepared concrete at measured thicknesses such as 1/8 inch, 3/16 inch, or 1/4 inch.

When Urethane Cement Is the Right Flooring Choice

Floor Condition	Why Urethane Cement Is Used
Hot water, steam, and rapid temperature changes	Formulated to tolerate thermal cycling and move more closely with the concrete beneath it
Loading docks, high forklift traffic, steel wheeled carts, and pallet movement	The thick mortar build handles abrasion, turning traffic, braking forces, and concentrated wheel loads
Dropped tools, parts, containers, and repeated impact	Selected for production and service areas where the floor is regularly struck or subjected to physical abuse
Green concrete or concrete with high internal moisture	Many urethane cement systems can be installed sooner than standard resin flooring and tolerate higher concrete moisture
Cooking oils, animal fats, solvents, and sanitizing chemicals	Commonly selected for kitchen and processing environments where heat and organic or chemical exposure occur together
Frequent washdowns and sanitary cleaning	Creates a seamless, low odor, easy to clean floor layer for wet processing and sanitary environments

Urethane Cement vs. Standard Epoxy Flooring

Standard epoxy is an excellent flooring material for many commercial, industrial, and residential applications. Urethane cement is selected when the service conditions exceed what a general purpose epoxy system is designed to handle.

Comparison	Urethane Cement	Standard Epoxy
Typical thickness	Commonly 1/8 to 1/4 inch	Commonly measured in mils
Thermal cycling	Built for hot water, steam, and repeated temperature swings	Not usually the first choice for severe thermal cycling
Impact and traffic	Strong fit for loading docks, steel wheels, forklifts, and repeated impact	Strong fit for warehouses, shops, garages, and general manufacturing floors
Concrete moisture	Many systems tolerate green concrete and high moisture readings	May require cured concrete and a separate moisture vapor barrier
Best fit	Commercial kitchens, food processing, loading docks, and wet production	Garages, warehouses, decorative floors, retail, and general commercial service
Appearance	Functional industrial finish	Broader decorative options including solid color, flake, quartz, and metallic finishes

Neither material is automatically better for every floor. Urethane cement solves a specific group of thermal, moisture, sanitation, and heavy traffic problems. Standard epoxy is often the more practical choice when appearance, color selection, or general dry service performance is the priority.

Common Urethane Cement Flooring Applications

Application	Flooring Challenges Addressed
Commercial kitchens and food prep areas	Hot oils, grease, water, sanitizing chemicals, and frequent cleaning
Food and beverage manufacturing	Wet processing, thermal cycling, spills, and washdowns
Meat, poultry, fish, dairy, and brewery facilities	Animal fats, organic acids, hot and cold water, and heavy cart traffic
Loading docks and material handling areas	Forklift traffic, pallet movement, steel wheels, dropped materials, and impact
Pharmaceutical and sanitary production	Seamless cleanability, chemical exposure, and low odor installation

Our Urethane Cement: APF CastorCrete SL

APF CastorCrete SL is the urethane cement currently offered in this collection: a gauge rake and trowel applied cementitious polyurethane slurry made for concrete exposed to demanding physical, thermal, moisture, and chemical service. It installs directly over properly prepared concrete without a separate primer, is low VOC, made from sustainable raw materials, and is available with an optional antimicrobial additive to help inhibit fungal and microbial growth.

Specification	APF CastorCrete SL
Installed thickness	1/8 to 1/4 inch
Complete kit weight	42 pounds (Parts A, B, C, and D)
Compressive strength	8,500 psi
Tensile strength	1,400 psi
Flexural strength	2,700 psi
Shore D hardness	75 to 80
Service temperature	Up to 200 degrees Fahrenheit
Application range	45 to 90 degrees Fahrenheit
VOC	35 g/L
Concrete moisture tolerance	May be applied to concrete indicating 100% relative humidity under ASTM F2170
Green concrete	May be applied after approximately 7 to 10 days at 70 degrees Fahrenheit
Dry to touch	Approximately 12 hours
Full service	24 to 36 hours
Shelf life	1 year unopened
Colors	Light Gray, Dark Gray

Complete kit requirement: CastorCrete SL components are proportioned as a complete 42 pound kit. Do not divide a kit into smaller batches or estimate partial component quantities, it will not cure or perform correctly.

Coverage and Kit Planning

Coverage changes directly with installed thickness. Measure your floor area, divide by the coverage rate for your chosen thickness, and round up to the next full kit, since kits cannot be split between two applications or thicknesses.

Installed Thickness	Coverage Per 42 lb Kit
1/8 inch	32 square feet
3/16 inch	24 square feet
1/4 inch	21 square feet

Compatible Topcoats

For added chemical, abrasion, or UV resistance, urethane cement can be top coated once cured. From our current in stock lineup, APF Epoxy 600 and APF Epoxy Novolac 900 are both compatible epoxy options, with Novolac 900 reserved for the most aggressive chemical exposure. For a polyaspartic topcoat, Poly Gloss 85 gives a 22 minute working time, and Poly Gloss 85 Slow Go extends that to 90 minutes for larger areas. See our full Epoxy Resin lineup to compare.

Surface Preparation

Concrete must be cured at least 7 days, clean, structurally sound, and free of wax, loose paint, or curing compounds, then mechanically prepared to an ICRI CSP 3 profile. Acid etching is not recommended for this product and will void the manufacturer warranty. Control joints and perimeter walls require a keyway cut to the manufacturer's specifications so the material has somewhere to terminate; never feather edge urethane cement. CastorCrete SL should be applied directly to bare, properly prepared concrete rather than over an existing coating. Our Grizzly Grinders equipment line covers the mechanical prep step for installers handling their own work.

Mixing note: Pour Parts A, B, and C together and mix for 30 seconds, then slowly add Part D while mixing and continue for another 30 seconds. Place the mixed material immediately and keep a wet edge between batches; working with more than one mixing container at a time helps keep a steady supply of fresh material on hand. Full mixing, application, and safety instructions are on the product page and in the current TDS and SDS sheets.

Urethane Cement Is a Professional Installation Product

Urethane cement is not a roll on DIY floor coating. It requires mechanical concrete preparation, perimeter and termination keyways, equipment designed for heavy mortar mixing, gauge rake or trowel placement, thickness control, and a continuous wet edge between batches, normally handled by an organized installation crew. Customers new to urethane cement should review the current technical documents and speak with One Stop Epoxy before ordering.

Frequently Asked Questions

What is urethane cement flooring?

Urethane cement is a thick, cementitious polyurethane flooring material made from resin, cement, and aggregate. It is installed over prepared concrete to create a durable floor layer for thermal cycling, moisture, impact, chemical exposure, and demanding commercial or industrial traffic.

Is urethane cement the same as a urethane topcoat?

No. Urethane cement is a mortar or slurry system installed at a fraction of an inch thick. A urethane topcoat, such as our One Stop WB Urethane, is a much thinner coating applied over epoxy, urethane cement, or another compatible body coat.

When should I choose urethane cement instead of epoxy?

Choose urethane cement when the floor will face repeated hot water, steam, thermal cycling, high moisture, loading dock traffic, steel wheels, dropped materials, hot cooking oils, animal fats, or frequent sanitary washdowns. Standard epoxy is often the better fit for decorative and general dry service floors.

Is urethane cement suitable for loading docks and forklift traffic?

Yes. Urethane cement is commonly specified for loading docks, warehouses, and material handling areas exposed to forklifts, pallet movement, steel wheels, and repeated impact. The required thickness should be selected for the actual service conditions.

Can urethane cement handle hot water and steam?

Yes. Thermal cycling resistance is one of the main reasons urethane cement is used in kitchens and processing plants. APF CastorCrete SL is rated for constant service temperatures up to 200 degrees Fahrenheit.

Can urethane cement be installed on new or moist concrete?

APF CastorCrete SL may be applied to properly prepared concrete approximately 7 to 10 days old and to concrete indicating 100% relative humidity under ASTM F2170. The concrete must still be clean, structurally sound, and prepared to current manufacturer requirements.

Does this urethane cement need a primer?

APF CastorCrete SL installs as a one step system directly on properly prepared concrete, without a separate primer coat, which helps it return to service quickly.

How many kits do I need?

Measure your floor area and divide by the coverage rate for your chosen thickness, 21 to 32 square feet per kit depending on thickness. Each kit is a complete unit and cannot be divided between two applications, so round up to the next full kit.

What topcoat can I add?

From our current in stock lineup, APF Epoxy 600 and APF Epoxy Novolac 900 are compatible epoxy topcoats, and Poly Gloss 85 or Poly Gloss 85 Slow Go give a polyaspartic option with a faster return to service.

Can urethane cement be installed over an existing coating?

CastorCrete SL is intended for direct application to properly prepared bare concrete and should not be installed over an existing coating. Old coatings must be removed so the urethane cement can bond to the concrete substrate.

Is urethane cement a DIY product?

No. Urethane cement requires professional concrete preparation, keyways, heavy mortar mixing equipment, thickness control, and fast placement by an organized crew.

Review the current TDS and SDS sheets before ordering, compare our 100% Solids Epoxy Resin lineup for standard duty floors, or shop complete Epoxy Flooring Systems. Urethane cement ships free to the 48 contiguous states, and most orders ship out the same or next business day.