Product description
Add PWR - Powdered Water Repellent to crown mixes and exterior mortars to repair and waterproof at the same time. This dry mix can be added to the dry mortar mix to provide permanent water repellent protection. PWR remains vapor permeable which means it allows the mortar to still breathe. Will not alter the look of the mortar. Add two ounces of PWR to every 15 pounds of dry mortar mixture.