SLABREZ® 47 is your go-to cement modifier and can be used in both sprayable and patching mortar applications. This acrylic polymer concentrate is designed for sprayable cementitious compositions. It can be use in exterior insulation and finish systems (EIFS) basecoats and adhesives and sprayable stucco-type coatings – and can be applied over a variety of surfaces. Applied correctly, this modifier works well on old concrete and masonry, brick, wood, metals, and many other surfaces.
Intended Users And Applications
- Professional Contractors: Concrete contractors, surface preparation teams and facility maintenance crews.
- Typical Environments: Commercial floors, industrial facilities, exterior masonry surfaces and high-traffic areas.
- Application Scope: Ideal for use over old concrete, masonry, brick, wood and metals. Requires a structurally sound, clean concrete substrate free of curing agents, coatings and bond breakers. Not recommended for application when the relative humidity exceeds 85 percent or when temperatures fall below 45 degrees Fahrenheit.
Problems This Product Solves
- Reduces the risk of delamination by significantly improving the flexural strength and adhesion of cement mortars.
- Prevents freeze-thaw damage in exterior environments by enhancing the thermal resistance of patched concrete areas.
- Eliminates bond failures on challenging surfaces by acting as a high-tack bonding agent for concrete and masonry.
- Speeds up surface preparation workflows with a fast-curing formula that allows for foot traffic in just one to four hours.
Key Features And Benefits
- High-solids acrylic polymer formulation: Increases the compressive strength and overall longevity of cementitious compositions.
- Dual-purpose functionality: Acts as both a reliable bonding agent and an effective mortar admixture to simplify inventory needs.
- Inert finish properties: Provides excellent chemical and abrasion resistance to protect repaired areas from harsh environmental wear.
- Zero VOC formula: Meets EPA regulations across North America to ensure safe use in occupied or regulated settings.
Performance Characteristics
- Solids content by volume: 47 percent (+/- 2 percent)
- VOC content: 0 g/L (calculated per ASTM D3960)
- Mix ratio by volume with water: 1 to 1 (admixture) or 2 to 1 (bonding agent)
- Minimum application surface temperature: 45 degrees Fahrenheit
- Skid resistance: Complies with ANSI A326.3 for wet dynamic coefficient of friction
System Compatibility And Use Context
SLABREZ® 47 is highly compatible with a variety of cementitious compositions, exterior insulation and finish systems (EIFS) basecoats and sprayable stucco coatings. When integrated into broader resinous flooring systems, it provides a stable and highly adhesive base layer for subsequent epoxies, polyurethanes or urethane cement flooring applications. If existing slabs show signs of unreacted silicate contaminants or severe moisture drive, contractors should apply SLABLOC® 50 to secure the bond prior to subsequent coating steps.
Installation And Application Overview
Surface preparation requires a structurally sound concrete substrate with a pH of nine or above, free from all bond-breaking materials per ICRI Guideline No. 310.2R. As a bonding agent, contractors should reduce the product with two parts clean water to one part polymer and apply two coats at a rate of 250 to 350 square feet per gallon. Cementitious material can be placed once the primer is cured enough for foot traffic (one to four hours) but no later than 24 hours. When used as an admixture, add 1.25 to two gallons of the reduced material per 50 pounds of mortar mix. Always monitor temperature and humidity, ensuring the dew point remains 50 degrees Fahrenheit below the surface temperature.
Frequently Asked Questions
What is the proper mix ratio for SLABREZ 47?
When used as an admixture, mix one part polymer to one part clean water. For use as a bonding agent, reduce it with two parts clean water to one part polymer.
How long should I wait before applying mortar over the bonding agent?
Cementitious material can be placed as soon as the material is cured enough to walk on, typically between one and four hours. It must be applied within 24 hours of the bonding agent application.
Can SLABREZ 47 be applied to old concrete surfaces?
Yes. It is designed for resurfacing old floors and works effectively on old concrete, masonry, brick and metal, provided the surface is properly prepped and free of bond-breaking contaminants.
Are there temperature limits for application?
The product is best suited for application when the ambient temperature is between 60 and 90 degrees Fahrenheit. The minimum application surface temperature is 45 degrees Fahrenheit.
Is this product compliant with VOC regulations?
SLABREZ 47 contains zero volatile organic compounds and is EPA compliant in all states and provinces across North America.
SLABREZ® is a resinous flooring product family within the SLABHARD® product brand portfolio. 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. For additional information, visit www.slabhard.com.