SLABSEAL® 250 VOC is a two-component solvenated acrylic polyurethane sealer that provides a durable wet-look finish for concrete and masonry surfaces. Formulated for professional concrete contractors, it protects commercial flooring systems and industrial concrete coatings with an inert, UV-stable film.
Intended Users and Applications
- Professional concrete flooring contractors and commercial coating applicators
- Interior and exterior concrete, masonry surfaces and decorative cementitious polymer overlays
- Ideal for textured concrete where recoating does not require abrasive surface preparation
- Functions as a polyurethane primer only; do not apply over epoxy or other flooring chemistries
Problems This Product Solves
- Eliminates delamination risks between coats with an unlimited recoat window that requires no abrasive surface preparation.
- Provides a durable alternative to single-component acrylic sealers that wear down quickly under heavy traffic.
- Prevents yellowing and UV degradation on exterior commercial flooring systems.
- Secures adhesion to minimally profiled high-gloss surfaces when applied as a hybrid primer.
- Maintains regulatory compliance across North American states and provinces with a low-VOC formulation.
Key Features and Benefits
- Unlimited Recoat Window: Apply multiple coats indefinitely without aggressive mechanical profiling.
- Exceptional Concrete Adhesion: Bonds securely to substrates to prevent peeling within industrial facilities and warehouses.
- UV Stability: Resists yellowing to maintain a clear gloss or satin finish over extended periods.
- Low Viscosity Formula: Penetrates deeply into porous cementitious overlays to deliver a stronger structural bond.
- Slip Resistance Compatibility: Accepts broadcast slip-resistant resin sand to meet strict facility safety requirements.
Performance Characteristics
- Mixed viscosity: 250 cps
- Volume solids: 38.5 percent
- Mix density: 9.2 pounds per gallon
- Pot life: 45 minutes at 77 degrees Fahrenheit
- Mix ratio: Two parts A to one part B by volume
- Adhesion to concrete: Greater than 400 psi
- Tensile strength: 5,000 psi
- VOC content: Less than 100 grams per liter
- Gloss index: 90 to 95 for Clear Gloss and 40 to 70 for Clear Satin
System Compatibility and Use Context
SLABSEAL® 250 VOC functions as a standalone sealer or as a primer for high-performance polyurethanes like SLABSEAL® 100 CRU Clear Gloss. You must apply the Satin finish coat exclusively over a cured layer of the Clear Gloss finish. Do not use this product as a primer for epoxy systems. Ensure the concrete substrate has a functioning positive-side moisture barrier.
Installation and Application Overview
Concrete must be structurally sound, dry and free of bond-breaking contaminants. Prepare the surface to CSP 2 or higher. Apply the material in ambient temperatures between 60 and 90 degrees Fahrenheit. Do not apply when relative humidity exceeds 85 percent. Pre-mix parts A and B separately, combine them at a two-to-one ratio and mix for two minutes at low speed. Use the dip-and-roll method with a half-inch nap non-shedding phenolic core roller. The coating dries to the touch in two to six hours, accepts light traffic in 24 hours and reaches full cure in four to seven days.
Frequently Asked Questions
Can I use SLABSEAL® 250 VOC over existing epoxy coatings?
No, this product functions strictly as a polyurethane primer and sealer. It is not compatible with epoxy chemistries.
What is the coverage rate for this sealer?
The Clear Gloss covers 300 to 350 square feet per gallon. The Clear Satin covers 400 to 450 square feet per gallon.
Do I need to grind the floor between coats?
Mechanical abrasion is not required between coats. The product features an unlimited recoat window as long as the surface remains clean.
How do I achieve a satin finish?
You must apply the SLABSEAL® 250 VOC Clear Satin coat directly over a base coat of SLABSEAL® 250 VOC Clear Gloss.
Can I add an antimicrobial agent to this product?
Yes, you can incorporate a sodium hydrogen zirconium phosphate antimicrobial additive during application for environments requiring strict hygiene standards.
What is the working time after mixing?
The mixed pot life is approximately 45 minutes for a one-gallon mass at 77 degrees Fahrenheit. Higher temperatures will reduce this working time.
SLABSEAL® is a solvenated acrylic polyurethane product family within the Desert Polymer Flooring brand portfolio. Desert Polymer Flooring is a product brand of Star Step Performance Coatings Group, sold through authorized locations. For additional information, visit www.desertpolymerflooring.com.