GST International Lock 'N Seal

• The product gives superior protection against stains and has exceptional water resistance.
• It will resist most stains up to 24 hours, however, oils and especially solvents should be wiped up soon after spillage has occurred.
• The product enhances, brightens and beautifies the natural beauty and color of the pavers while improving their durability and resistance to fading.
• Once the surface has been properly cleaned, prepped and dried, the product can be applied immediately after paver installation.
• No waiting period required.

• Bonds and locks down joint sand.
• Retards efflorescence.
• Prevents ant tunneling.
• Repels oil, grease and rust stains.
• Inhibits weeds and grass between pavers.
• Non- yellowing and UV resistant.
• Easily applied, fast drying and long lasting.
• Interior and exterior use.
• Eases maintenance.
• Re-coatable.
• 25 - 35 % color densification.

• Light Enhancement
• Satin
• Repels Water
• Repels Grease and Oil
• Resists Stains
• Resists Efflorescence
• Resists Spalling

• Not recommended for pre-sealed surfaces or non-porous surfaces such as ceramic tile, marble, granite, porcelain and terrazzo.
• Do not use where hydrostatic pressure is possible.
• Should not be used in conjunction with polymeric sand.

• Segmental Pavement Systems.
• Unglazed Ceramic Tiles - Saltillo.
• Clay Brick and Natural Stone.
• Commercial applications such as parking lots and ports.

• Porous Surface: 75 - 150 sq.ft./gal (flagstone, Mexican clay tile, paver brick, etc.)
• Dense Concrete: 150 - 250 sq.ft./gal (slate, stone, limestone, etc.)
• For exact coverage rates, a measured quantity to proper saturation over a known area will provide a square foot coverage rate for a specific job.

• Clean Up: Water
• Remove: Chemical stripper

• Before use on a job, thoroughly test this product on a small area to assure performance and appearance.
• Use only in well ventilated areas. Immediately remove pools or puddles were over application has occurred.
• Cleaning your hardscape project with a pressure washer and/or a surface cleaner is the first step in preparing for a successful project.
• It is strongly recommended to utilize a heated pressure washer to aid in the cleaning process.
• A heated pressure washer in conjunction with Pro Grade Cleaner will remove most organic stains, weeds, and old polymeric sand in considerably less time than it would take with a cold water unit.
• A heated pressure washer will also aid in the removal of residual sealer and decrease the labor when ‘stripping’ old sealer off.
• Stringent cleaners such as muriatic acid can be very harmful to your pavement, causing irreversible damage to the surface.
• Most colorants for concrete are made from iron oxide (FeO2) or better known as rust.
• Strong acids like muriatic acid will dissolve these pigments permanently changing the appearance and etching the surface.
• Allow product to dry thoroughly before applying a sealer.

• Should not be used in conjunction with polymeric sand as it is also a joint sand stabilizer, not made to activate polymeric sand.
• The product is applied with our Low Volume Pump Sprayer.
• Applying sealer on perimeter edges with a roller is acceptable to eliminate overspray on vegetation and surrounding structures.
• Using the GST Low Volume Pump Sprayer, add sealer up to the top of the GST Logo printed on the sprayer.
• Pump the sprayer approximately 30 times to pressurize the tank. Hold the spray wand 8”-10” from the surface and begin to apply the sealer using an overlapping circular motion to ensure an even application.
• To maintain a consistent even flow of sealer, it will be necessary to continually pump up the sprayer as the pressure in the tank decreases.
• The surface will appear ‘wet-damp’ for 8-10 seconds.
• If you over-apply the sealer and create puddles, it will be necessary to stop spraying and disperse additional sealer on the surface with a blower.
• Back-rolling solvent-based sealers may leave application lines on the surface.
• On segmental pavement systems, application of any sealer with a roller is not recommended as it will pull sand from the joint and will deposit it on the surface causing an undesirable result.
• One coat will seal, protect and enhance the beauty of the surface.
• If a second coat is necessary due to extreme porosity, apply as soon as the first coat is dry to the touch.
• GST sprayers are made with solvent resistant tips and seals, however do not let the sealer dry on the spray tip.
• If this occurs, soak the tip in lacquer thinner. Replacement tips are available.
• Do not apply the product during inclement weather or in direct sunlight when temperatures exceed 80ºF.
• Application to a damp surface or uncured concrete (28 day minimum) may cause a hazy appearance or loss of adhesion.
• Air and surface temperature should be between 50ºF and 80ºF for 24 hours following application.
• On segmental pavement systems, application of any sealer with a roller is not recommended except for the perimeter, as it will pull sand from the joint and will deposit it on the surface causing an undesirable result.

• Indoor applications
• Outdoor applications
• Porous Surfaces
• Dense Surfaces
• Concrete, Exposed Aggregate
• Pavers and Slabs
• Brick Masonry
• Natural Stone & Travertine
• Concrete Block Wall

H - 1; F - 1; R - 0; PP - H

• Meets or exceeds Federal EPA standards for VOC compliance.
• Meets or exceeds South Coast Air Quality Management District and the Bay Area Air Quality Management District, for VOC compliance of less than 100g/l required by the State of California.