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5 Quick Crawl Space Waterproofing Tips

If you’re noticing standing water, a musty smell, or signs of mold growth in your crawl space, it’s time to take action. Crawl space moisture is a real concern in Central Indiana, especially during long stretches of humidity or after heavy rains. 

While this area of your home may not be top of mind, it directly impacts your indoor air quality, energy efficiency, and your home’s structural integrity. Catching problems early—and knowing how to respond—can help you avoid more serious and costly repairs later. Here are five quick crawl space waterproofing tips that you need to know about.

5 Tips to Keep Your Crawl Space Dry

So, what does it really take to keep your crawl space dry? In many cases, it’s not just one thing—it’s a combination of steps that work together to stop water intrusion and control moisture. Here are five key recommendations to get your crawl space on the right track.

1. Inspect the Perimeter of Your Home

Start with the basics: what’s going on outside your home? If the ground slopes toward your foundation or your gutters are dumping water too close to the house, you’re inviting moisture problems. 

Make sure your yard is graded to move water away, and that downspout extensions carry water several feet from your foundation. A working perimeter drain or French drain system helps keep water from seeping into your crawl space during heavy rains.

2. Seal and Repair Foundation Cracks

If you’ve noticed cracks in the crawl space walls or along the foundation, don’t ignore them. Even small cracks allow water and moisture to seep in—and over time, they can weaken your home’s structural integrity. 

Using the right repair materials, such as epoxy, helps create a long-lasting seal. A crawl space inspection can help identify which areas need attention before the damage gets worse.

3. Install a Vapor Barrier

If your crawl space has an exposed dirt floor, it’s likely contributing to excess moisture. A thick, durable vapor barrier installed across the floor and lower walls helps block moisture from entering the space. 

This simple upgrade helps with humidity control, reduces musty odors, improves indoor air quality, and protects your floor joists and crawl space insulation from decay.

4. Use a Crawl Space Dehumidifier

Even if your crawl space is sealed, humidity can still build up—especially in warmer months. A high-performance crawl space dehumidifier helps manage moisture levels and prevent problems like mold growth, mildew, and wood rot.

 It’s a key part of keeping your crawl space dry and preserving energy efficiency in your home.

5. Maintain Drainage Systems and Sump Pumps

If you’ve got standing water, your crawl space may not have a sump pump—or the one you have isn’t doing its job. Installing a crawl space sump pump is one of the most effective ways to remove water quickly during storms. 

You can also add a battery-powered backup system to keep water moving even during power outages.

Looking for a Crawl Space Company to Handle Your Crawl Space Waterproofing? Meet EverDry!

At EverDry Waterproofing of Greater Indiana, we’ve served homeowners throughout Indianapolis and surrounding Central Indiana communities since 1978. Our licensed team specializes in crawl space waterproofing, basement waterproofing, and foundation repair services. If your crawl space is damp, musty, or showing signs of damage, we’re here to help with proven, permanent solutions.

If you have a wet or damaged crawl space, here’s what we may recommend based on your home’s needs:

  • Drainage System Installation: For homes with chronic water problems, we install full interior crawl space drainage systems to move water efficiently to a sump pump. This provides more intensive, long-term protection from groundwater and heavy rain intrusion.
  • Crawl Space Sump Pump Installation: We install reliable sump pumps specifically designed for crawl space use. If your home loses power, our SmartPower™ battery backup system kicks in to keep water flowing and help prevent flooding.
  • Crawl Space Encapsulation: We fully seal your crawl space with heavy-duty liners, insulation, and sealing tape. This locks out moisture, regulates temperature, and helps protect the structural integrity of your home.
  • Crawl Space Vapor Barrier: Our team lays down a thick, professional-grade vapor barrier across the entire crawl space floor and up the walls. This blocks ground moisture and helps prevent mold and wood rot.
  • Crawl Space Ventilation & Dehumidifiers: We install crawl space dehumidifiers and vent systems like EZ-Breathe® to manage airflow and humidity levels. This improves indoor air quality and helps keep the crawl space dry year-round.


In some homes, we may need to start with crawl space repairs before any waterproofing begins. If your floor joists are sagging or your foundation walls are shifting inward, sealing things up won’t solve the root problem. We address these structural issues first—often using systems like Stabl-Wall™, which reinforces the walls with fiber-reinforced polymer panels to stop inward movement and restore stability.

Schedule a Free Inspection for Your Crawl Space Waterproofing in Indianapolis

Not sure where to start—or what your crawl space actually needs? We’re here to help. EverDry Waterproofing of Greater Indiana offers free inspections for homeowners dealing with crawl space moisture, standing water, or structural issues.

During your inspection, we’ll check for signs of damage, measure moisture levels, and recommend the right repair or waterproofing strategy based on your home’s condition. If you’ve been searching for crawl space waterproofing near me in Indianapolis and found us, you’re in the right place!

As an experienced crawl space waterproofing company, we’ve completed thousands of successful projects in the past 40+ years. Our team is highly rated by homeowners across Central Indiana—and we’re ready to help you, too. Let’s get your crawl space dry so you’re not risking mold, musty air, or structural damage under your home.

Schedule your free crawl space inspection today—online or by phone.

EverDry Solutions

Everdry of Greater Indiana offers multiple solutions so you can be
sure to find the perfect one for your home!

Exterior

Exterior

Put an end to dampness, cracks, bowing walls, mildew and musty smells with the Everdry Solution.

Interior

Interior

Put an end to dampness, cracks, bowing walls, mildew and musty smells with the Everdry Solution.

Multistep

Multistep

Put an end to dampness, cracks, bowing walls, mildew and musty smells with the Everdry Solution.