SB-1300 Natural Look Matte Finish
Joint Stabilizing Sealer

CONTAINS An Antifungal To Prevent Mold, Moss & Algae On Sealer Film
  • Dual Purpose Product: Seals Surface & Hardens Joint Sand
  • Antifungal Film Protection: Protects Sealer Film from Mold, Moss & Algae
  • Stain Resistant: Promotes Easier Cleaning & Maintenance
  • Stabilizes Joint Sand: Reduces Sand Washout, Weeds & Insect Infestation
  • Clean Fresh Look: Locks in a Clean, Natural Look & Matte Finish
  • Breathable, Immediate Application Water Based Sealer: Does Not Trap Moisture or Efflorescence

SB-1300 Joint Stabilizing Sealer is a water-based, single component, acrylic co-polymer sealer and joint sand stabilizer. 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-1300 can be applied immediately after surface installation, as it is breathable and will not trap naturally occurring efflorescence. SB-1300 protects the surface from salts, acids and other corrosive chemicals as well as minimize overall surface weathering and deterioration.  On a newly installed or restored surface, SB-1300 will lock in its clean natural look and provide stain resistance which makes cleaning and maintenance easier.  SB-1300 is specially formulated with an antifungal designed to help inhibit the growth of mold, moss and algae on the sealer film.  It is non-hazardous and VOC/EPA compliant. SB-1300 has the consistency of water, is milky white when applied and dries clear with matte finish. Cured sealer is freeze resistant to -60°F (-51°C) and is stable up to a temperature of 180°F (82°C).

Surebond Joint Stabilizing Sealers can be used just as a sealer for pavers, concrete and other masonry surfaces without joint sand stabilization.

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.  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

Application Sq.Feet Sq.Meters
Sealing with joint stabilization 80 – 120 7.4 – 11.1
Sealing without joint stabilization 150 – 300 13.9 – 27.9


Coverage based on one coat.  Actual coverage may vary depending on the type, age, condition, porosity of the surface, application method and other local conditions such as temperature and humidity.

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SB-1300 Helpful Information

SB-1300 TDS Spanish
SB-1300 TDS Spanish


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-1300.  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. Allow surface to dry for a minimum of 24 hours after cleaning and/or rain before joint sand installation or sealer application.

Joint Sand 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.

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.


Apply when day and night temperatures are between 40°F – 95°F. Maximum surface temperature should not exceed 120°F.  Allow surface to dry for a minimum of 24 hours after cleaning and/or rain before sealer application. Avoid windy conditions to keep sealer spray from drifting. NO pre-blending or mixing required. DO NOT DILUTE. SB-1300 is designed for a one-coat application but if desired an additional light spray coat can be applied only after the first coat has dried to the touch.  Excessive applications may decrease breathability and/or cause surface to become slippery. Some surfaces may require an anti-slip additive to increase friction.

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.  Before sealer dries, back roll surface with a foam roller to eliminate any pooling and to even out the sealer.

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. 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.

SB-1300 is a single application product. Re-applications may need to be carried out every 2-3 years depending on exposure. NOTE: Excessive applications can cause surface to become slippery. Application of this product is out of the control of SEK-Surebond. Application steps should be followed completely and accurately. Should a problem occur with this product, SEK-Surebond limits liability to product replacement only. Buyer assumes all risk and liability resulting from the use or misuse of this product.

Dry Time

Surface will be dry to touch within 60 minutes 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. Area can be open to foot & vehicular traffic in 24 hours depending on site conditions.

Clean Up

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

Flood Coat & Squeegee Application for Joint Stabilization

Joint Sand Installation (Prior to sealing)

Spray & Back Roll Application (sealing without joint stabilization)

4 Steps to Surface Restoration

Please visit our video gallery to view all available cleaning, sanding and sealing related videos.

SB-1300 (MFD prior to 2020 - no antifungal) SDS
SB-1300 With Antfungal (new for 2020) SDS