Tru Impressions water-based, penetrating concrete stain for use on nearly any concrete surface. Fast-drying. Semi-translucent, easy to layer to achieve mottled look. Can be sprayed, rolled, brushed or sponged. Easy to dilute for even lighter coating. UV stable for indoor and outdoor use. 1 gallon coverage approx. 250 sq ft. 5 gallon = approx 1,250 sq ft. Available in regular or concentrated forms. Should be sealed to fully lock in color. With 40 stock colors offered and custom blending available, these are a popular choice for contractors and DIYers alike. Color is more consistent between surfaces, and there are no harsh chemicals involved. Colors can be diluted, combined, layered, and manipulated in many ways to achieve the desired effects. Water-based concrete stains are suspensions of micro-fine or nano-pigments in a water-based solution of penetrating and binding agents. Because pigment color choices are so plentiful there is a wider color variety to choose from. A good water-based stain will give you time to work with it, yet will be permanent when cured out. Water-based stains work by flowing into and filling the concrete pores and bonding into the surface. Because they are more surface dependent for soaking in, you need to be sure proper prep is done to open up the surface to allow for a good, deep bond in the pores. C-Etch is a great product for that by safely etching the surface giving you plenty of porosity.