Do-It-Yourself Aggregate Epoxy for Your Patio

Preparing the Surface

• When using an aggregate epoxy for your patio, always have a proper sub-surface. Concrete is the best surface for patios so install a level concrete slab before using the epoxy. The concrete should be completely cured -- preferably for at least a few months -- and free of any dirt, sealants, oils or other materials. Wait for a dry, cool day before applying the epoxy.

Mixing

• Epoxy comes as two different chemicals you will need to mix together to start the chemical reaction that will eventually solidify it. Follow the mixing instructions precisely since mixing ratios are key. Epoxy is toxic so wear protective clothing and breathing apparatus when working with it. Generally, the instructions require you to mix it for a couple of minutes then start adding the aggregate.

Aggregate

• You can choose what aggregate materials you want with the epoxy but choose carefully. Smooth, rounded rocks tend to work best, such as river rock. Jagged rocks or stones will not create an ideal surface. However, granite or marble chips may work for a textured surface. You may also be able to add creative touches around the edges of your patio, such as seashells, if they are well-placed inside the epoxy.

Troweling

• Once your epoxy and aggregate mixture is spread, you will need to immediately trowel it. This levels and tightens the mixture, removing air bubbles and ensuring that it cures correctly. The epoxy may cling to the trowel, but there are trowel lubricants that can minimize this problem. Once the epoxy has cured, it is there to stay so make any adjustments quickly.