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This product is available in West Virgina only!

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MasterSeal 590 is a hydraulic repair mortar. It is a one-component, quick-setting, Portland-cement-based, hydraulic mortar that immediately stops running water through holes and cracks in masonry or concrete. MasterSeal 590 expands while it sets, locking into place even under water pressure. MasterSeal 590 quickly develops high strength, while its shrinkage compensation expands to lock it into place. It can set above or below water. It’s one component mixture makes it easy to to mix, only needing water. Shortly after application, it will be ready to topcoat with the appropriate product, minimizing downtime. MasterSeal 590’s durable non-metallic, non-gypsum formula will maintain volume stability. This formulation is appropriate for cold-weather applications.