SLABSEAL® 300 is a high-solids, two-component aliphatic polyurethane finish coat engineered for demanding commercial and industrial environments. This durable topcoat provides exceptional protection for aircraft hangars, automotive showrooms and manufacturing floors. Professional contractors rely on these polyurethane floor coatings to deliver long-lasting resistance against heavy traffic, harsh chemicals and daily wear.
Intended Users And Applications
Contractor types: Professional flooring contractors, surface preparation specialists and facility maintenance teams
Application scope: Designed for new concrete installations and for resurfacing existing floors
Exclusions: Do not use this material as a primer or attempt to thin the formula with solvent
Problems This Product Solves
Prevents surface degradation from aggressive chemicals, industrial solvents and aviation fluids like Skydrol.
Resists hot-tire staining in high-traffic automotive showrooms and busy repair facilities.
Withstands heavy foot traffic, constant forklift movement and severe daily operational abrasion.
Provides an inert finish that complies with USDA, FDA and Food Safety Modernization Act standards for regulated environments.
Reduces jobsite odors and environmental impact through a high-solids, low-VOC formulation.
Key Features And Benefits
High-solids aliphatic formulation: Delivers a tough, impact-resistant finish that significantly extends the service life of the floor.
Excellent chemical resistance: Protects the concrete substrate from aggressive solvents, oils and unexpected industrial spills.
Low-VOC and low-odor chemistry: Allows for safe application in occupied spaces like schools, hospitals and commercial buildings without disrupting nearby operations.
Optional aluminum oxide compatibility: Produces a highly abrasion-resistant film with enhanced traction to improve overall facility safety.
UV-stable clear gloss finish: Maintains a pristine, professional appearance while resisting yellowing and discoloration over time.
Performance Characteristics
VOC Content: Less than 50 grams per liter
Solids by Weight: 98 percent
Mix Ratio: 3:1 by volume
Pot Life: 45 minutes at 50 percent relative humidity
Dry to Touch: 4 to 10 hours at 50 to 90 degrees Fahrenheit
SLABSEAL® 300 functions as a high-performance finish coat within comprehensive resinous flooring systems. You can pigment the clear gloss coating using SLABHARD® Polyaspartic Pigment packs for customized color applications. Installers must apply the coating over structurally sound concrete or a compatible base coat. For concrete slabs in direct contact with soil, the system requires a positive side moisture barrier meeting ASTM E1745. Do not apply the product below 30 percent relative humidity or outside the ambient temperature range of 60 to 90 degrees Fahrenheit.
Installation And Application Overview
Ensure the concrete substrate is clean, completely dry and free of curing agents, sealers or other bond breakers. Prepare the surface mechanically to achieve an ICRI Concrete Surface Profile of CSP 2 to CSP 4 depending on the specific system requirements. Pre-mix the A and B components separately to disperse all raw materials before combining them at the strict 3:1 ratio. Pour the mixed material into a paint tray to dip and roll using a 3/8 inch nap non-shedding phenolic core roller. Do not pour all contents directly onto the floor to squeegee and back-roll, as this approach will cause visible roller lines and significantly shorten your working time.
Frequently Asked Questions
What is the mixing ratio for SLABSEAL® 300?
The required mix ratio is three parts component A to one part component B by volume.
Can I use this product as a concrete primer?
No, this product is engineered strictly as a high-performance finish coat and you should never use it as a primer.
Is this coating resistant to automotive fluids?
Yes, the cured film provides excellent resistance to hot-tire staining, motor oils and aggressive aviation chemicals like Skydrol.
How long does it take for the floor to fully cure?
The system requires a full seven days at standard temperatures to achieve maximum chemical and abrasion resistance.
Can I add slip resistance to the final coat?
Yes, installers can incorporate 320 grit aluminum oxide to increase traction and meet ADA slip resistance guidelines.
What are the environmental requirements for application?
Apply the coating when surface temperatures remain between 60 and 90 degrees Fahrenheit with ambient relative humidity above 30 percent.
Supporting Assets
Review the comprehensive Technical Data Sheet and Safety Data Sheets to ensure safe handling, precise application and optimal long-term performance.
SLABHARD® is a shared product brand of Star Step Performance Coatings Group available through both Desert Polymer Flooring and Alta Paints & Coatings, delivering high-performance flooring materials and the SLABSEAL™ AutoShield system.
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