Prevent and Get Rid of Water in a Crawl Space
December 18, 2024

Are you wondering how to get rid of water in your crawl space? Crawl spaces are prone to moisture issues, which can gradually affect the rest of your home. Water seepage or buildup is common in crawl spaces due to leaking pipes, poor drainage, and high humidity. To prevent water in your crawl space, you can install a sump pump, dehumidifier, vapor barrier, and drain tile. Improving outdoor drainage can also help protect your home. Keep reading to discover the signs of moisture issues and some of the most effective solutions.

Is it Normal to Have Moisture in a Crawl Space?

A little bit of water won’t ruin your home. However, if you see puddles in your crawl space, that can be a serious concern. If you don’t address a damp crawl space on time, it can lead to a foul smell, permanent foundation damage, saggy floors, and mold growth. These factors affect your indoor air quality and can cause health risks. If you have any moisture issues in your crawl space, it’s better to get it inspected and repaired by a professional.

Identifying Water in a Crawl Space

There are some clear signs to look for when identifying water in your crawl space. Identifying these water issues in the early stages can save you from costly repairs.

Signs of Water Problems

A few obvious signs might indicate water in your crawl space:

  1. Musty odors: If you smell an unpleasant odor in your home, it may be due to mold or mildew. Mold and mildew growth are obvious signs that there’s a water problem somewhere in your home.
  2. Water pooling or dampness in the air: If water pools or leaks into the crawl space after heavy rain, it’s a serious indicator of water problems.
  3. Mold growth on surfaces: When there is a water leak in the crawl space, mold may grow and spread into your home. So, if you see mold growth in your home, it’s a sign of a water problem.
  4. Sagging crawl space floor: If water has been in your crawl space for a while, it could cause wood rot, weakening posts and beams, and leading to a saggy floor.

Causes of Water in Your Crawl Space

Here are some of the causes that lead to water issues in your crawl space:

  1. Poor drainage systems: When your home’s drainage system doesn’t work as it should, water pools around your foundation and in your crawl space. So, it’s important to fix or update your drainage system adequately to prevent water from pooling during heavy rain.
  2. Cracks in the foundation walls: Even a small crack in your foundation wall can cause water to seep into your crawl space. It’s important to fix cracks immediately to prevent this.
  3. High groundwater levels: If you live in a water-prone area, heavy rainfall may increase the groundwater level and cause hydrostatic pressure against the foundation. Proper interior and exterior drainage is required to prevent this from causing significant flooding and structural issues.
  4. Improper grading: The landscaping around your home should have negative grading in order to direct water away from your home.
  5. Plumbing leaks: If you don’t repair water leaks in the crawl space, they can lead to severe water damage over time. That’s why it’s important to fix leaks on time to prevent water issues in your crawl space.

Prevent Water in a Crawl Space

Wondering how to prevent water in a crawl space? Here are the five most common preventive measures to prevent water seepage in your crawl space:

1. Improve Yard Drainage

If the drainage in your yard does not direct water away from your home, water will pool around your foundation. Consider improving the drainage in your yard to prevent flooding and water pooling during heavy rainfall.

When you install a well-designed drainage system, it directs melting snow and rainwater away from your home. You should consider installing French drains to keep your crawl space dry all year round.

2. Crawl Space Encapsulation

Encapsulating your crawl space reduces humidity and prevents issues such as mold and mildew growth and pest infestation. It involves installing a high-quality vapor barrier on the walls and floors of the crawl space and sealing any cracks or gaps.

3. Crawl Space Insulation

Adding insulation to your crawl space helps you improve your home’s energy efficiency and control the moisture level. It also blocks moisture that comes from the ground and keeps your home’s floor warm even during the winter.

4. Maintain Proper Ventilation and Humidity Levels

Good airflow in your crawl space area prevents moisture buildup and enhances indoor air quality. A proper ventilation system helps you control moisture and temperature. Installing a dehumidifier can help you lower and maintain humidity levels, reducing the chance of mold growth.

5. Regular Inspection and Maintenance

It’s important to inspect and maintain your crawl space to identify signs of mold and water quickly. If you see any leaks, cracks, or damp areas, you should immediately consider hiring a professional.

Crawl space repair professionals will catch these issues at an early stage and prevent you from expensive repairs or bigger problems. It’s best to maintain your crawl space with professional assistance at least annually.

Get Rid of Water in Your Crawl Space

If you have standing water in your crawl space, you should consider getting rid of it immediately. Here are some of the best ways to get rid of water in crawl space:

1. Seal Foundation Cracks

Even a small crack in your foundation can be the entry point for water seepage. That’s why it’s important to seal foundation cracks to prevent moisture from seeping in through your crawl space walls and floors.

Your foundation repair specialists will install drain tile or inject epoxy to seal foundation cracks as needed. These repair solutions prevent water from entering and help you create a dry and clean crawl space. Sealing foundation cracks also helps you maintain the structural integrity of your home.

2. Install a Sump Pump

Installing a sump pump is important as it prevents flooding. A sump pump detects rising water levels and pumps out water before it becomes a huge issue. It is an automatic defense mechanism against water buildup that keeps your crawl space area dry even during heavy rainfall and snowfall.

3. Repair or Replace the Drainage System

If you have excessive water in your basement or crawl space, it’s a sign that your drainage system is not working properly. You need to either repair or replace it as needed. A proper drainage system collects water and pumps it away from your home to prevent serious structural issues.

Waterproof Your Crawl Space and Avoid Future Damage

Addressing and preventing water issues in your crawl space is an important step in maintaining your home’s overall structural integrity. If water persists, you should seek professional help to assess the underlying issues. KC Waterproofing and Foundation Repair provides affordable and reliable crawl space repair solutions to provide you with a safe living space. Our crawl space services include crawl space encapsulation and waterproofing. Contact us for an inspection today!

Top waterproofing contractors Kansas City
home-advisor-elite-service-award-1
Lifetime Transferrable Warranty
Top Companies In Kansas City Foundation Repair

Get Your Free Guide

15 Preventative Maintenance Tips For Your Foundation

This Preventative Maintenance Guide shows you the top 15 causes of foundation problems. Download now to protect your home, add value, and prevent damage to your home’s foundation.

This field is for validation purposes and should be left unchanged.

Satisfied Customer Reviews

Mario was great! He very informative and helpful! I would highly recommend him!
Mario came out to check the sump pump. After cleaning the pit out and checking both the main and backup pump he wiped everything done and left the area cleaner than when he got there. Very friendly and knowledgeable guy!
Don Derry with KC Waterproofing has been our "go-to" foundation repair specialist since 2005! We have had him to our homes multiple times. The project always wraps up with us having peace of mind. This past time with 14 piers installed, was no exception. His crew was polite and respectful. They cleaned up our property perfectly at the conclusion of the project. I highly recommend this foundation repair company.
Tech was on time completed the repair as necessary, and the experience was great.
We recently had KC Waterproofing out at our home in North Kansas City, and I cannot say enough great things about Ryan Marshall and his team (Austin & Jacob). They worked at our property over the week of July 17/2025 - and absolutely blew us away with their professionalism, work ethic, and transparency.

Ryan took the time to thoroughly explain the problems we were facing, what caused them, and exactly how they were going to fix them. His honesty and willingness to go the extra mile truly set him apart.

Ryan and his assistant worked hard, were respectful of our home, and made sure everything was done right the first time. It's rare these days to find that level of care and craftsmanship. Because of professionals like Ryan, we’ll continue to turn to KC Waterproofing for future needs.

Highly recommend this company—especially if you get the chance to work with Ryan and his crew! When it comes to foundation issues we will always recommend KC Waterproofing. They have been in the business, are trusted, and will do the job correctly.
I recommend KC Waterproofing. They kept me informed as the job went along. They started and ended as they had said. Cleaned up each day before they left. Price was fair and they were able to stabilize walls without excavation which was good so I didn’t have to deal with landscaping. Fran and Julian were professional and easy to work with.
Inspection completed throughly and efficiently. Technician was professional and pleasant.
Mario did great work on our house. Answered any questions we had, was efficient, and courteous. Would definitely recommend.
The workers got the work done on time and as described.
Mario was great. Real personable. He was able to explain the process and how it works. Thank you again Mario.