Clear, Zinsser Okon Plugger Concrete and Masonry Water Repellent Sealer - OK950, 5 Gallon- 1 Pack

Excellent protection from water intrusion, efflorescence and freeze-thaw damage Micro-Plug technology plugs surface pores to prevent water absorption Water-based, low VOC, non-yellowing formula can be used on all weights of concrete block Fast dry sealer dries to the touch in 3 hours and protects from rain in only 24 hours Covers up to 300 square feet per gallon depending on the surface