Diamite Non-Sag Crack Filler is a two-component, fast-setting epoxy gel packaged in special two-part caulk tubes. It is mixed automatically as it is extruded from the tubes with a special caulk gun supplied with the material. This low modulus system helps prevent future cracking. It will not run through cracks and stays flush with surface. There is no mess or waste since material is mixed only as needed. This product works very well for filling cracks in floors prior to applying coatings and toppings. Material can be coated over within hours.