SurfacePRO RTU

Two-Part Urethane Wet Look Joint Stabilizing Sealer

  • Multi-Purpose Product: Seals & Enhances Surface, Hardens Joint Sand
  • Surface Enhancement: Enhances Surface Tone & Gloss Finish
  • Antifungal Film Protection: Protects Sealer Film from Mold, Moss & Algae
  • Good Joint Sand Stabilization: Reduces Sand Washout, Weeds & Insect Infestation
  • Good Durability & Protection:  Promotes Easier Cleaning & Maintenance
  • Breathable, Immediate Application – Does Not Trap Moisture or Efflorescence

SB-6715 SurfacePRO RTU is a proprietary water-based, two-part, clear (non-yellowing), aliphatic urethane sealer and joint sand stabilizer with good durability. It can be used inside and outside, on old and new, horizontal or vertical surfaces to provide surface protection and stabilize newly installed joint sand in one application process. SB-6715 can be applied immediately after most surface installations, as it is breathable and will not trap naturally occurring moisture or efflorescence. On new concrete, mortar, grout or overlays, it is recommended to wait 7 days after installation to allow for curing before applying SB-6715. Optimal results when performing same day cleaning, sanding and sealing with SB-6715 can be achieved when following the recommended application process. SB-6715 is specially formulated with an antifungal designed to help inhibit the growth of mold, moss and algae on the sealer film.  SB-6715 protects the surface from salts, acids and other corrosive chemicals as well as minimizes overall surface weathering and deterioration.  On a newly installed or restored surface, SB-6715 will enhance surface tone with a wet look, semi-gloss finish and provide stain resistance which makes cleaning and maintenance easier.  It is non-hazardous and VOC/EPA compliant. SB-6715 is a two component product that requires mixing before use. Once mixed, it has the consistency of water, is milky white when applied and dries clear with semi-gloss finish. Cured sealer is freeze resistant to -60°F (-51°C) and is stable up to a temperature of 180°F (82°C).

Suitable Surfaces

Suitable for concrete and clay pavers, flat and stamped concrete, masonry, natural and manufactured stone, segmental retaining wall blocks, concrete walls and exposed aggregate. Ideal for shaded areas, pool decks and outdoor showers where mildew, fungus and algae are a concern.  Recommended for high traffic areas where high durability and superior chemical resistance is desired.  Safe to use on old or new surfaces in both inside and outside environments. Not recommended for granite, marble, asphalt, glazed or ceramic tile. Test first to verify performance and appearance before applying.

A test area is always recommended to determine product suitability and compatibility with your specific surface before use and also if desired results are achievable. Due to the inherent variability of natural stone and clay products, long term performance may vary. Please consult with us prior to sealing if there are concerns.


Coverage Per Gallon Once Mixed

Application Sq.Feet Sq.Meters
Sealing with joint stabilization 80 – 120 7.4 – 11.1
Sealing only without joint stabilization 200 – 300 18.6 – 27.9


Coverage is based on single application. Actual coverage may vary depending on type, age, condition, joint size, porosity of the surface, application method and site conditions such as temperature & humidity. For more uniform coverage, a second coat must be applied after the first coat has dried to the touch.

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SB-6715 Helpful Information

SB-6715 Hoja De Datos Técnicos


TEST SEALER FIRST on a small inconspicuous area to determine suitability and if desired results are achievable with this product.  Before sealing, surface should be thoroughly cleaned and prepared with Surebond Cleaners. For spot cleaning, use S.R.B. and/or Oil Extractor before cleaning the surface overall with SureClean.  Use Efflo Off for efflorescence cleaning and SureStrip to remove previously applied sealer, other than SB-6715.  Remove and kill any mold, mildew, fungus or algae. For joint stabilization in existing surfaces, old joint sand should be removed to a minimum depth of 1” from the top of surface. Thoroughly rinse all cleaner residue from the surface. For applications without joint stabilization, SB-6715 can be applied to a damp surface with NO ponding or pooling of water present. For applications with joint stabilization, allow the surface to dry before sealer application.

Joint Sand Installation: Surface must be dry for ease of installation. Paver joints should be no more than ¾” wide and filled with ASTM C144 joint sand. Vibrate surface with vibratory roller or compactor after sweeping sand into joints to minimize air voids. Sand level should not exceed the bottom of the chamfer edge or 1/8” down from the top on non-chamfered surfaces. Do not use wet joint sand because it will severely diminish joint stabilization.

Prior to sealing: Use a leaf blower to remove dust, debris and fine sand particles from the surface. Cover/protect nearby landscape, vehicles, and buildings from overspray during application.

Full Kit Mixing Instructions

SB-6715 is a two-part product that comes packaged in a kit which contains one five gallon pail with 4.75 gallons of Part A and one quart container of Part B.

Tools Needed:
• Variable Speed Drill
• Paddle Mixer

Mixing Instructions:
Blend the container of Part B into the pail of Part A with a drill and paddle mixer on low speed for 1-2 minutes. Do not whip air into the mixture.

Yields 5 gallons of ready to use SB-6715.

Pot Life: SB-6715 Mixture (combined Parts A and B) has a pot life of 90 minutes which varies based on temperature and humidity. Do not mix more material than can be used in a 90 minute period. Do not store SB-6715 Mixture. If less than the entire kit is needed, see Project Calculator for more information.


Apply when day and night temperatures are between 40°F – 95°F. Maximum surface temperature should not exceed 120°F. To cool hot surfaces, mist with water without ponding or pooling prior to applying SB-6715.  Avoid windy conditions to keep sealer spray from drifting. SB-6715 is a two part product: read and follow the Mixing Instructions before applying.  Use the product coverage calculator to determine the amount of material required for the project; material coverage will depend on the surface type and its porosity. Excessive applications may decrease breathability and/or cause surface to become slippery. Some surfaces, such as travertine, pool decks and very smooth substrates, may require an anti-slip additive to increase friction.  On large projects, it may be necessary to work in smaller more manageable sections.

Application Tools:  low pressure high volume sprayer, slit foam roller, foam squeegee for joint stabilization

Spray & Back Roll Application (no joint sand stabilization):  Use coverage rate for sealing without joint stabilization.  Hold sprayer nozzle perpendicular to the surface, spray and overlap each spray pass. Saturate the surface to ensure proper coverage. Do not apply too thick to avoid air bubbles in the sealer film. Before sealer dries, back roll surface with a foam roller to eliminate any pooling and to even out the sealer.  For optimal performance a second application should be applied. Second coat should be applied as soon as practical after the first application has visually cleared and is dry to the touch, which is usually within one hour. Second application must be applied prior to full cure (see Dry Time for more information). With interior applications, SB-6715 may be carefully sprayed or applied with a slit foam roller taking care not to roll back and forth excessively.

Flood Coat & Squeegee Application for Joint Stabilization: Use coverage rate for sealing with joint stabilization. Liberally spray sealer to flood surface and joints ensuring proper sand penetration for stabilization. Saturate the surface to ensure proper coverage. Do not apply too thick to avoid air bubbles in the sealer film. Use a foam squeegee to direct excess sealer into joints. On an uneven surface, it is recommended to then back roll with a slit foam roller to even out the sealer and eliminate pooling. For optimal performance a second application should be applied. Second coat should be applied as soon as practical after the first application has visually cleared and is dry to the touch, which is usually within one hour. Second application must be applied prior to full cure (see Dry Time for more information).

Dry Time

Surface will be dry to the touch within 1 -2 hours assuming 65-85°F at 50% relative humidity. Low surface or air temperature and or high relative humidity will extend dry times. Protect the surface from dust, rain, condensation and traffic while drying. Full cure will take 24 – 36 hours depending on weather and site conditions. After surface has visually cleared and is dried to the touch, area can be open to foot traffic in 24 hours and vehicular traffic in 48 hours depending on weather and site conditions.

Clean Up

For tools and equipment, clean with soap and water before product is allowed to dry.

SB-6715 Part A SDS
SB-67.. All SurfacePRO Sealers PART B SDS