A fast-setting waterproofing hydraulic cement. Sets in 3 to 5 minutes to stop the flow of water even under pressure through holes and cracks in masonry. It is also ideal for sealing floor and wall joints and settlement cracks in masonry walls. Anchors metal to masonry. Follow label instructions for proper surface preparation. Mix 3 parts Drylok Fast Plug with 1 part water to a putty consistency. Mix only enough for immediate use due to the quick setting time. 1 lb. covers approximately 12 cu. in. of patching material. Product is alkaline on contact with water. Appearance is gray-tan powder and may be painted when set with Drylok oil-based masonry waterproofer, Latex base Drylok masonry waterproofer, latex base floor paint or Drylok cement paint.