Applying an epoxy coating to your garage floor can upgrade the space from a basic storage area to a showroom. This durable finish not only enhances the appearance of your garage but also protects the concrete from stains and damage. In the video above, This Old House general contractor Tom Silva and epoxy flooring expert Dawn Alves demonstrate how to apply an epoxy coating to a garage floor.
About Epoxy Coatings
Epoxy coatings are a popular choice for garage floors due to their durability, chemical resistance, and sleek, attractive finish. These coatings consist of a resin and a hardener. When mixed, they create a strong, plastic-like material that bonds to the concrete surface.
Benefits of Epoxy Coatings
Applying an epoxy coating to your garage floor has several advantages:
- Increased durability and longevity of the surface
- Resistance to oil, gasoline, and other chemical spills
- Easier cleaning with resistance to dust and dirt
- Enhanced appearance with a glossy, professional finish
- Improved safety with slip-resistant options
Types of Epoxy Coatings
There are several types of epoxy coatings available for garage floors:
- Water-based epoxy: Easier to apply but less durable than other options
- Solvent-based epoxy: Provides excellent adhesion and chemical resistance
- 100% solid epoxy: The most durable option, offering the thickest coating
- Epoxy with color flakes: Adds texture and visual interest to the floor
Preparing the Garage Floor for an Epoxy Coating
Proper preparation makes a difference in your final result, ensuring the epoxy adheres properly to the concrete surface.
Cleaning and Degreasing
Before applying the epoxy, thoroughly clean the garage floor to remove any dirt, grease, or oil stains. Use a degreaser and scrub brush to clean stubborn spots, then rinse the floor with clean water and allow it to dry completely.
Etching the Surface
To create a better bonding surface for the epoxy, the concrete needs to be etched. This process opens up the pores of the concrete, allowing the epoxy to penetrate and adhere more effectively. In the video, Alves mentions using a grinding machine to scarify the floor, which is an effective method for preparing the surface. If you don’t have access to a grinding machine, another option is using an etching solution, which can be applied with a stiff broom and thoroughly rinsed off.
Repairing Cracks and Damage
Inspect the floor for any cracks, chips, or other damage. Fill these imperfections with an epoxy filler or concrete patch compound. Allow the repairs to cure fully before proceeding with the epoxy application. Addressing these issues now is necessary because they can cause the epoxy to peel or crack if not properly repaired beforehand.
Temperature and Humidity Considerations
Check the temperature and humidity levels in your garage before starting the epoxy application. Ideal conditions typically fall within the range of 50 degrees Fahrenheit to 90 degrees Fahrenheit, with humidity levels below 85%. Extreme conditions can affect the curing process, potentially compromising the durability and appearance of the finished floor.
Applying the Epoxy Coating to the Garage Floor
With the floor properly prepared, you can apply the epoxy. This multi-step process requires careful timing and attention to detail.
Priming the Floor
Apply a coat of concrete primer to the prepared surface. This helps to seal the concrete and provides a better surface for the epoxy to bond with. Use a roller to apply the primer evenly across the entire floor. Allow the primer to dry according to the manufacturer’s instructions before moving on to the next step.
Mixing the Epoxy
As Alves demonstrates in the video, mix the two-part epoxy according to the manufacturer’s instructions. Use a drill with a mixing paddle to ensure thorough blending. Remember that you’ll have a limited working time once the epoxy is mixed, typically around 20 minutes. Always mix the entire kit to ensure proper chemical reactions.
Applying the Base Coat
Pour the mixed epoxy onto the floor and use a squeegee to distribute it evenly. Work in sections to ensure complete coverage. Use a paintbrush to cut in around the edges and corners of the garage. Follow up with a long-handled paint roller to smooth out the epoxy and create an even finish. Be methodical and consistent with your rolling technique to avoid lines or patches.
Adding Color Flakes
While the epoxy is still wet, broadcast vinyl color flakes across the entire surface. As shown in the video, it’s better to use more flakes than necessary to ensure complete coverage. The excess will be removed later. The color flakes not only add aesthetic value but also provide a slight texture that can help prevent slipping.
Applying the Clear Topcoat
After allowing the base coat to cure overnight, remove the excess color flakes using a floor scraper. Then apply a clear topcoat to seal in the color flakes and provide additional protection and shine to the floor. The clear coat will add a layer of durability, making the floor resistant to abrasions and scratches.
Curing and Maintenance of Your Epoxy Garage Floor
Proper curing and maintenance are key to a long-lasting epoxy-coated floor.
Curing Time
Allow the epoxy coating to cure fully before using the garage. As mentioned in the video, it typically takes about seven days for the epoxy and topcoat to cure completely before you can drive on the surface. During this time, avoid placing heavy objects on the floor or subjecting it to heavy foot traffic.
Cleaning and Care
To maintain your epoxy-coated garage floor:
- Sweep regularly to remove dirt and debris.
- Clean spills promptly to prevent staining.
- Use a soft mop and mild cleaner for routine cleaning.
- Avoid using harsh chemicals or abrasive cleaning tools.
In addition to regular cleaning, periodically inspect the floor for any damage or wear. Address minor issues promptly to prevent them from becoming more significant problems.
Cost Considerations of Epoxy Coatings
The cost of applying an epoxy coating to your garage floor can vary based on several factors, including the size of your garage, the type of epoxy used, and whether you hire a professional or do it yourself.
- DIY kits: Basic DIY epoxy kits are available at hardware stores and typically cost between $150 and $300, according to prices on the Home Depot website. These kits include the epoxy resin, hardener, and sometimes color flakes.
- Professional application: Hiring a professional to apply the epoxy can cost between $4 and $7 per square foot, according to contractor data from Angi. Professionals have the experience and equipment to ensure a high-quality finish.
- Additional costs: Additional costs may include concrete repair materials, cleaning supplies, and any necessary tools or equipment rentals.
When budgeting for this project, consider the long-term benefits of an epoxy-coated floor, including durability, maintenance ease, and improved aesthetics. Investing in quality materials and professional application can provide a longer-lasting and more attractive result.
