If you are interested in applying a coating on your concrete surfaces for protection and ascetics you can't go wrong with an acrylic. Unlike other products, an acrylic concrete stain is not susceptible to degradation by UV radiation from the sun nor from "hot tire pickup" which is caused when you park a car with hot tires on a surface that has not been properly cured.
The first step to the application is the cleaning of the floor. You should of course remove all the dirt and grime with a good quality detergent. Also, be sure all mildew and rust have been removed. If the concrete surface is in the garage or driveway then be sure any petroleum stains have been removed completely with a good degreaser. Also, if the concrete is new it may have a clear coat which needs to be etched with a weak muriatic acid solution.
Once the floor is prepped be sure it is completely dry before applying the acrylic or any other floor coating for that matter. If the floor is in the basement or garage then a space heater works great to evaporate the moisture. If it is outside then you really want to do this process when the weather is warm or hot and dry. Usually you need to wait 24 hours to be sure all the moisture has evaporated.
When you get ready to apply the coating, mix it up just like you would paint. Start by using a brush to apply the acrylic to all the hard to reach places like in the corners and around the edges. Next, using a short to medium nap roller, apply the rest of the coating to the floor. You want to be sure to make all your brush or roller strokes in the same direction because after about three hours you are going to apply a second coat perpendicular to the first. By alternating the directions of the strokes you are assured that you get full coverage of the acrylic stain.
>The nest step is apply an acrylic concrete sealer over the floor. This will help to protect your new floor surface and will also bring out the color of the stain and improve its durability. Be sure the coating is completely dry before you apply the sealer or you will not be happy with the results. The best way to apply the sealer is with a pump sprayer because it allows for a complete covering. Be careful of over spray though and you may want to mask off the walls. If you don't have a sprayer or if you can deal with the over spray mess then you can use a roller. One coat is usually adequate for interior floors but exterior concrete surfaces require two coats as they usually have more traffic.
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