If you currently have a concrete floor in your home that you want to add an acid stain to, you can do it yourself. Don’t worry about hiring someone to do it; adding the stain yourself will probably be cheaper. Adding an acid stain to your concrete floors can deepen the color and give it the look you want by chemically reacting to the limestone and other aggregates to create a unique look and feel.
The first thing you will want to do when you are adding your acid stain is to remove any baseboards or trimmings around the concrete floor that could possibly be ruined if touched by acid. The next thing you will want to do is cover your walls a foot up from the floor with masking paper; this will protect your walls from being ruined by the acid mixture.
Secure the masking paper on the wall with painter’s tape, so the tape does not ruin your walls. The next thing you will want to do is mix the acid stain.
You will definitely want to wear protective gear while you are mixing the stain, because hydrochloric acid is the main ingredient in the mixture. The limestone in the concrete will benefit from the acid, but if your skin makes contact with the hydrochloric acid, there could be many negative consequences.
If you are staining a hand-trowelled floor, you will want to use the ratio of one part stain to four parts water. If you are staining a machine-trowelled floor, you will use the ratio of one part stain to one part water.When you are mixing the stain, make sure you add the acid to the water and not the other way around. This is the safest way to mix the stain.
The next step is to apply the stain to the floor. When you are staining the floor, keep the spray wand about 18 inches up off the floor.
Spray in a random pattern so that the stain does not pool or puddle. Keep spraying the floor until it reaches the color you desire.
You will then need to neutralize the floor with a mixture of water and ammonia. Let the floor dry and then vacuum up any extra water.
Let the floor dry again and then seal the floor with a regular concrete sealer. Keep reapplying the sealer until you have the finish you desire.
Let the floor dry and then replace your trimmings and baseboards.
Last, enjoy your new acid stained concrete floor!
Photo Credit: Andy Franklin