Sika Sikagard 740W Penetrating Water Repellent Sealer, 5 Gallon

Description

Sikagard 740W sealer is a one-part reactive penetrating treatment for concrete and other cementitious substrates that need water repellency without building a surface film. This 5 gallon pail is made for bridge, facade, parking, and infrastructure work where absorption control helps protect the substrate through weather exposure.

Sikagard 740W Sealer Benefits

• Penetrating silane emulsion helps reduce water uptake in absorbent concrete.
• Ready-for-use formula does not need dilution before application.
• Can be used on vertical and horizontal traffic areas.
• Suitable as a water repellent primer under many Sikagard protective coatings.
• Large 5 gallon format supports contractor and maintenance work on broader areas.

Use Sikagard 740W sealer where the goal is to limit water intrusion while keeping the look of the concrete close to unchanged. It is a practical fit for civil engineering, building concrete, and exposed exterior surfaces that need a hydrophobic treatment instead of a topical coating.

Sikagard 740W Sealer Applications

• Water-repellent treatment for concrete walls, decks, and facades.
• Protection of parking structures, ramps, and traffic-bearing concrete areas.
• Exterior building concrete exposed to freeze and thaw cycling.
• Civil engineering surfaces that need a penetrating hydrophobic treatment.
• Primer layer beneath compatible Sikagard protective coating systems.

Surface Preparation

The substrate should be clean, sound, and absorbent enough to accept a penetrating treatment. Apply with a low-pressure spray, airless spray, brush, or roller in a single pass from the bottom up, then follow with a wet-on-wet pass if needed to reach the required consumption.

Coverage depends on porosity, and very dense surfaces may need only one coat. Protect treated areas from rain for at least 6 hours at 68 F after application.

Technical Details and Documentation

Sika describes this material as a low-viscosity concentrated silane emulsion for concrete and cementitious substrates. The manufacturer cites compliance with NCHRP Report 244 Series II and IV, and lists field coverage around 240 to 380 square feet per gallon depending on substrate porosity. Review the manufacturer resources from Sika before production use.

Dispensing and Ordering Help

This 5 gallon package works well for contractors and facility teams covering larger surface areas. For related protective materials, see our coatings and specialty chemicals selection.

Need help comparing coverage, checking substrate porosity, or matching this treatment to the rest of your repair system? Call (800) 220-1966 or email [email protected].