550 Water Based Polyurethane Concrete Sealer is a protective glossy finish, two-component urethane resin. The Part A component must be thoroughly mixed into the Part B component for the material to properly cure and provide a durable, long-lasting finish. This product can be applied indoors or out to smooth concrete surfaces. Rough or broom-finished concrete are not good candidates for this sealer. Careful review of the product instructions prior to applying is a must. Glossy, no wax sealer alternative for indoor floors.
Coverage: When properly applied to a smooth concrete surface, the 1 gallon kit will cover up to 300 sq. ft. Coverage will vary with surface conditions and concrete porosity. If top-coating a previously sealed surface, the kit will cover up to 500 sq. ft. Use only water-based acrylic or epoxy sealers to prime the floor. For best results, apply sealer at temperatures between 60°F-95°F and when the relative humidity is 80% or less. The sealer itself must be above 60°F before installing.
Mixing Instructions: As a two-part system, Part A must be thoroughly mixed into Part B in order for the material to properly set up for application. Pour Part A into Part B and begin to mix with a wooden stir stick. Mix completely; fold the material over onto itself and carefully scrape the sides of the can to assure nothing is left unmixed. Whenever possible mix contents with a low speed electric drill with a paint mixing paddle attachment. The contents should thicken and become whiter as you stir. Stir for 2-4 minutes until totally combined. NEVER mix the product at a high-speed. Once mixed, the pot life for the sealer is approximately 1 hour. Working the material after the recommended time can result in streaking, whiting and an uneven finish.
Application: Use a piece of packing or duct tape to “de-fuzz” the roller prior to application. After the sealer has been thoroughly mixed, pour the polyurethane in a thick ribbon directly onto the floor and begin pulling the sealer across the floor using a 5 mil squeegee allowing the tool to set the appropriate depth. Wet a 3/8” nap roller with sealer and gently back roll the polyurethane into place on the floor. Avoid overworking the sealer as it can lead to air entrapment which can cause foaming on the surface. Working time for the 550 Water Based Polyurethane Sealer is 50-60 minutes so having more than one person mixing, pouring and applying would be essential for larger projects. If a second coat should be deemed necessary, apply within 24 hours of the first coat or wet-sand the surface with a 120-grit pad prior application to ensure good adhesion. If applying with an HVLP sprayer, spray on in even coats until the surface is saturated and allow to dry.
Please see our How-to Apply Water Based Polyurethane Guide for complete application instructions. Kits include option to purchase 12″ squeegee. An 18″ notched sealer squeegee option is available for larger projects.
550 Water Based Polyurethane Concrete Sealer can be cleaned prior to cure with isopropyl alcohol and can only be removed from fully-cured concrete surfaces using Soy Gel Paint and Sealer Stripper or by mechanical means, such as grinding or sanding. Leftover product, brushes, paint trays, or roller covers should be responsibly discarded after use.
Key 550 Water Based Polyurethane Concrete Sealer Features:
- • Water-based, Low Odor Highly Durable Polyurethane Coating
• Apply using either applicator or an HVLP sprayer
• No wax required sealer alternative for indoor floors
• Can be applied with a water-based acrylic prime coat indoors for increased coverage area
• VOC compliant everywhere but California
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