Sikafloor®-959 SC should be used full strength without dilution. Although successful application can be performed with topical applications, the use of brooms, sponges, or mops to work material into substrate pores have proven to produce superior results.
Mixing
Mix until uniform before using.
Coverage
Coverage will depend upon method of application, surface porosity, age, moisture, absorption characteristics and the texture of the concrete. Coverage on flat finished concrete is typically 200–400 ft2/gal (4.9–9.8 m2/L). Old or soft concrete will require more material. Slabs ground to expose hard non absorptive aggregates will take less material.
Equipment
Apply Sikafloor®-959 SC by brush, roller, sponge, mop, or pump-spray application. Use rotary floor scrubbers equipped with brushes or pads to assist with large jobs. Always wear protective clothing and equipment proper for the method of application.
Spray applicator Guidelines
Pump Garden Sprayer: Use conical tip and apply with circular motion. Mask all areas not to be coated to safeguard against splashes, overspray, and runoff from application. Wear all required safety equipment. Take care not to allow tape adhesive to interfere with surfaces to be treated. Surface wet with material will be slippery until dry.
Distribute product with a pump garden sprayer to fully saturate the surface. Surfaces should remain wet 5 to 10 minutes. Work material into the surface with a broom, mop, or sponge to ensure product penetrates into substrate pores and microcracks. Take care not to create lap marks as they cannot be removed once the product has dried. If too much material has been applied, and it is puddled after 30 minutes, dilution and removal with a wet vacuum is recommended.
Recoat Time
When the first application is dry to touch, a second coat can be applied to maximize densification properties. If used as a polishing aid, wet polishing can begin when dry to touch.
Dry Time
Will depend upon the selected coverage rate, penetration into the substrate, and weather conditions. At 70°F (21°C) and 50 % relative humidity with an application rate of 400 sq. ft. per gallon (9.8 m2/L), surfaces should be dry and walkable and ready for the next stage of polishing or rinsing in 1 hour.
If surface will not be polished further, or they will be sealed with coating, wash surfaces at this stage with fresh water to remove excess densifier. when completely dry, surface can be returned to service. if sealing wait 24 hours to allow the densifier to cure.
