Masterseal 581 Cement Based Gray Waterproof Coating, 50 Pounds

Introducing the MasterSeal 581 Gray waterproof coating, now available at Shirley True Value Hardware in Winthrop, MA. This portland cement-based coating is specially formulated to provide superior protection for concrete and masonry surfaces against water, dampness, and seepage. Whether you are working on interior or exterior projects in Winthrop, the MasterSeal 581 Gray offers a reliable solution to safeguard your structures from moisture-related damage.

• Waterproof protection: Effectively waterproofs and protects building interiors from dampness, moisture, or seepage, ensuring long-lasting durability.


• Versatile application: Suitable for use on interior or exterior surfaces, above or below grade, including vertical, overhead, and non-traffic bearing areas.


• Surface correction: Fills and seals pores and voids to correct surface irregularities, creating a smooth and uniform barrier.


• NSF certified: When mixed with MasterEmaco A 660, it forms a low maintenance, highly durable waterproof barrier that is NSF approved for potable water applications, including use in potable water tanks.


• Mold and mildew resistance: Provides resistance to mold and mildew, helping maintain healthier environments.

Customers in Winthrop can rely on MasterSeal 581 Gray for a wide range of waterproofing needs. Whether you are renovating a basement, protecting foundation walls, or sealing water tanks, this coating offers dependable performance. Contractors, builders, and DIY enthusiasts alike will appreciate its adaptability for vertical walls, overhead surfaces, and areas that do not bear traffic. Its ability to fill surface imperfections also makes it ideal for restoring older masonry or concrete surfaces to a more uniform condition.



In summary, the MasterSeal 581 Gray waterproof coating is an essential product for anyone in Winthrop, MA seeking effective and durable waterproofing solutions. Available at Shirley True Value Hardware, it combines proven technology with NSF certification to ensure safety and reliability in your construction or repair projects.