Solvent-Based Polyurethane Sealer for Concrete Countertops is a high gloss, two-component urethane resin that provides a clear, long-lasting finish. Polyurethane coatings are highly durable, easy-to-apply and suitable for both indoor and outdoor use. The Part “A” component must be thoroughly mixed into the Part “B” component for the material to properly cure and harden.
When properly applied to a smooth surface, the mini kit will cover up to 50 sq. ft. Coverage will vary with surface conditions and concrete porosity. 500 Solvent-Based Polyurethane Sealer contains solvent and proper ventilation to the outside is required while applying. Turn off any pilot lights in the immediate area during application and cure time. Do not smoke. 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. Never allow the product to freeze. Topical sealers are not recommended for concrete countertops polished to 400 grit level or above.
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 paint stir stick. Mix completely; fold the material over onto itself and carefully scrape the sides of the can to assure nothing is left unmixed. Stir for 2-4 minutes until totally combined. Once mixed, the pot life for the sealer is 30 minutes.
Use a piece of packing or duct tape to “de-fuzz” the 3/8” nap roller prior to application. Pour a small amount of sealer onto the countertop surface careful to avoid dripping sealer over the edges. Using a 10 mil notched squeegee begin to gauge an even coat depth by pulling the squeegee across the face of the countertop. Pour more sealer as needed to cover and gauge the entire surface. With the handheld roller, gently roll the sealer into place against the squeegee application lines. Roll again in the opposite direction. Carefully wet the roller with sealer and apply along the edges without dripping or overlapping the countertop face. Repeat steps for a second wet coat.
If an additional coat should later be deemed necessary, apply within 24 hours of the first coat or wet-sand the surface with a 600-grit pad prior application to ensure good adhesion. Surfaces sealed with 500 Solvent-Based Polyurethane Sealer should cure for 12 hours at approximately 75F before use. Allow for additional drying time if high humidity is a factor. 500 Solvent based Sealer can also be applied with HVLP Gravity Feed Spray Gun for a finer finish. Dilute by 20% with Xylene and spray. Compressed air required.
Solvent-Based Polyurethane Sealer can be cleaned prior to cure with isopropyl alcohol. The sealer can only be removed from fully-cured concrete surfaces using industrial paint strippers, such as 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. Clean countertop surfaces with a mild dishwashing soap and water.
• Highly durable, high gloss protective two-part polyurethane concrete countertop sealer
• Suitable for indoor or outdoor use on any countertop project
• Add a 12″ 10 mil squeegee for an even depth and perfect finish
• Fast-drying and easy-to-apply
• Product has a strong odor. Use caution when applying indoors
• Not VOC compliant in New England or California