Whether you live in a known flood zone or just happen to be in a region with heavy seasonal rainfall—like Seattle or Sacramento—water damage is a constant risk. It only takes one bad storm to cause major problems, and while most people focus on protecting their basements or rooflines, your garage is often one of the most vulnerable parts of your home when it comes to unwanted moisture.
The good news? With some preventative effort, you can reduce the risk of flooding and water intrusion in your garage.
7 Steps to Make Your Garage More Flood-Resistant
1. Start with a Full Inspection
Clear everything out of your garage so you can do a thorough check of the floor, corners, and lower walls. Look for visible cracks, water staining, or any signs that water has entered in the past. These weak spots are likely entry points and need to be addressed immediately.
2. Seal Any Cracks or Gaps
Small cracks may not seem like a big deal—until water starts seeping through them. Use a high-quality concrete patch or products like Drylok to seal trouble areas. For more serious moisture control, consider cementitious tanking, a method that creates a waterproof barrier directly on the inside surface of walls and floors.
3. Apply Waterproof Paint
Don’t stop with just the floor or lower walls. Use waterproof paint on all interior surfaces of the garage, including the ceiling. This helps prevent humidity-related damage and strengthens the moisture resistance of the space.
4. Upgrade Your Garage Floor with Epoxy
After stripping and cleaning the concrete, apply a waterproof epoxy coating. This not only improves the floor’s resistance to water but also enhances durability and makes it easier to clean. Be sure the surface is completely dry before applying any epoxy.
5. Inspect and Replace Weather Stripping
Your garage door’s weather stripping is the first line of defense against rainwater. Check along the bottom seal and the sides. If it’s brittle, cracked, or missing altogether, replace it. New weather stripping helps block out wind, rain, and pests.
6. Seal Anything You’re Storing in There with Plastic Bins
Even with preventive measures, it’s smart to be prepared. Use metal shelving instead of wood, and store belongings in sealed plastic bins instead of cardboard boxes. If water does find its way in, your items will still be protected.
7. Make Garage Maintenance a Seasonal Task
Recheck your garage annually—preferably before the rainy season hits. Reapply sealants as needed, test the garage door’s weather stripping, and inspect the flooring for signs of wear. Staying ahead of water damage is far easier (and cheaper) than fixing it after the fact. If your garage door’s panels get damaged, replace or repair them. Don’t let any repairs get pushed back.
Keep Your Garage—and Home—Dry Year-Round
Water damage is not just an inconvenience. It can lead to mold, structural issues, and costly repairs. By making these simple improvements to your garage, you’re helping to protect not only your property but your peace of mind.