Often we don’t think of our garages or pay much attention for their appearance. They’re simply a place to park the cars and store the additional boxes of Christmas decorations and such. However, like any other room within your house your garage floor must be studied care of. 
Because of the put it to use gets, along with water, gas and oil that’ll inevitable be spilled upon it, garage flooring can certainly become damaged and start to fall apart after many years of use. Epoxy coating is one treatment for your garage flooring challenge. Epoxy coating applies a coating of sealant and protectant to your concrete garage floor to help it resist staining, moisture problems and helps it maintain its appearance.
Installing epoxy flooring has a little up-front preparation before beginning. The most important step in the process is ensuring that the floor you are going to apply the epoxy coating onto is free of moisture, residual paint and does not have a cement sealer and other finishing applied to it.

To try for moisture, take a sheet of plastic and bring it to a 3-foot x 3-foot area using masking tape. Keep it there for approximately two days and then remove and check for almost any moisture collecting quietly of the plastic facing the floor. If moisture exists, than an epoxy flooring coating isn’t suitable as epoxy needs a dry surface to properly bond with the flooring. 
Next, we’ll test to ensure the flooring does not have a sealant already applied to it. This test will also check for the presence of oils in the cement as well. Take a cup of water and pour it directly onto the existing flooring. It should soak into the floor in an acceptable amount of time. When it beads or perhaps sits on the surface of the flooring then your flooring has probably recently been sealed or contains oil contaminants. Epoxy flooring isn’t suited to cement floors that have recently been sealed or contain any kind of oil residue because it won’t bond. 
Finally, if you’re willing to spend many months testing a location of your garage floor for suitability to installing epoxy flooring you can paint a small area with regular, oil-based enamel. If this test area lasts for many months then it is probable an epoxy coating lasts as well. However, if you decide to proceed with applying the epoxy coating you should remove this enamel coating which will require sanding.