Grout Mix Ratio

Ratios

• Look on most boxes or bags of grout and you'll find mixing suggestions rather than a specific formula. The ratio of grout to water may vary considerably, depending on the grout material. A general rule, though, is to start with one part water to two parts grout. Slowly add more water, as necessary, to achieve the correct texture.

Consistency

• Instead of relying on a specific formula for mixing grout, learn to recognize the correct consistency. Grout should be stiff enough that it doesn't drip from a putty knife, but creamy enough to spread easily. Think of peanut butter or mashed potatoes, and you've got the right consistency.

Mixing Method

• To make grout, pour two pounds in a 1-gallon bucket. Add two to four cups of clear, cool water and stir the mixture with a putty knife. Add more water if it is too thick; add more grout powder if it is too thin. Mix the grout thoroughly to remove any lumps or streaks and make it in small batches so it doesn't dry out as you use it.

Types

• Grout comes in a myriad of colors and several materials, depending on your purpose. Sanded grout is made from Portland clay mixed with tiny particles of silica sand. Because of its hardness and durability, it is an ideal grout for floors and for any tiles spaced wider than 1/4-inch apart. Non-sanded grout is also made from Portland clay, but lacks sand, as the name implies. It is less durable than sanded grout, but has a smooth finish that some people prefer. Epoxy grout costs considerably more than other types of grout, but offers unrivaled durability and stain resistance, making it a good choice for kitchens and high-traffic areas.