You may be wondering, Can You Waterproof Concrete? The quick and easy answer is… YES, you can waterproof concrete! Waterproofing concrete will make it resistant to water infiltration, which can help prevent structural damage, mold growth, and other detrimental issues. Here are some effective methods to waterproof concrete:
How to Waterproof Concrete

1. Add Waterproofing Agents to the Mix
- Integral Waterproofing Admixtures: These are chemicals added to the concrete mix before it is poured. They work by reducing porosity, blocking capillaries, or creating a hydrophobic surface within the concrete.
- Common types waterproofing admixtures:
- Crystalline admixtures: React with water to form crystals that block pores.
- Water-repellent admixtures: Often silicone or silane-based.
2. Apply Surface Sealers or Coatings
- Penetrating Sealers: These are liquid products applied to cured concrete that seep into the pores and chemically react to repel water. Examples include silane, siloxane, or siliconate-based products. Learn more about concrete sealing here.
- Film-forming Coatings: These create a waterproof barrier on the surface of the concrete. Common types of concrete coatings:
- Acrylic
- Epoxy
- Polyurethane/Polyaspartic
3. Use Waterproofing Membranes
- Liquid-applied membranes: These are rolled or sprayed onto concrete surfaces and cure to form a seamless, flexible barrier.
- Sheet membranes: Made of rubber, PVC, or bitumen, these are adhered to the concrete.
4. Install Drainage Systems
- To minimize water pressure on concrete structures, ensure proper drainage around the area, such as:
- Drainage pipes
- Gravel layers
- Waterproofing mats
5. Repair Existing Cracks
- Use polyurethane or epoxy injection to fill and seal cracks in existing concrete. This prevents water infiltration through these weak points.
6. Apply Cementitious Waterproofing
- A blend of cement, sand, and chemical modifiers that can be brushed or troweled onto the concrete surface. This is a popular choice for basements, water tanks, and tunnels.
7. Maintain and Inspect Concrete Regularly
- Periodic maintenance and inspections are crucial for smooIron Eagle surfaces. Look for cracks or wear in coatings and reapply as needed. Concrete takes routine maintenance.
Tips for to Help You Waterproof Concrete:
- Choose the right method: Consider the environment (e.g., below-grade structures, exposure to weather). For example, if you live in a hot, sunny area- epoxy coatings are not a good choice for your concrete, as they are not UV resistant and will yellow and peel much more quickly. Here’s another example where weather comes into play with waterproofing concrete. If you live in an area that experiences lots of rain or thawing and freezing- you will need to seal your concrete more often.
- Prepare the surface: Clean the concrete surface thoroughly and repair any defects before applying waterproofing products. Preparation is always key when you are looking to waterproof concrete surfaces.
- Follow manufacturer guidelines: Adherence to product specifications ensures effectiveness. Also, it will keep your manufactures warranty intact, if there is one.
Get a Free Quote to Waterproof Your Concrete Today!

Are you ready to get your concrete waterproofed by trained, insured professionals? Iron Eagle Coatings is here to help you! We are a local, veteran owned concrete company proud to serve Indianapolis and all the surrounding areas. Our team can waterproof your concrete to protect it from all of the elements we experience here in Indiana! Keep reading to learn about how to get a free concrete waterproofing quote!
Need a free estimate for concrete waterproofing in Indianapolis? Just give us a call or text anytime at 317-551-5187. Or, you can Contact Us anytime online. We are here to help you with all things concrete related- from concrete coatings, sealing and staining to full decorative concrete construction. Thank you for reading all about how to waterproof concrete. We hope to hear from you soon!


