Crawl Space Drain

There are many issues your crawl space can experience when it comes to water damage. What can a crawl space drain do to prevent those issues?

Crawl space drainage system with spout and rocks around perimeter of house

Crawl space water is a problem, but it’s a problem you don’t have to live with. If you’re experiencing water concerns in your crawl space, there are several ways to get rid of that water and have a high-quality waterproofing system. However, if you don’t know how to maintain your crawl space and get rid of the water, you can have all sorts of problems. Here’s everything you need to know about how crawl space drainage can impact your home’s crawl space health.

Why Is Water in the Crawl Space Bad? 

First and foremost, you might not know that crawl space water is bad. Knowing this is crucial to understanding why you need to remove it. What should you know about the implications of water in your crawl space? 

  • Mold and Mildew 

One of the biggest concerns that water in your crawl space can create is mold and mildew. Mold and mildew typically require at least 70% relative humidity to thrive, but they can stay alive and even continue to grow slowly at lower relative humidity. That means even relatively arid crawl spaces can end up with mold and mildew problems. 

Plus, if you have standing water in your crawl space, the area directly around the standing water will have extremely high levels of relative humidity. Even if the rest of the crawl space doesn’t have those extremely high levels of humidity, it’s important to remember that the standing water will evaporate sooner or later, leading to high humidity, which encourages mold and mildew. 

  • Waterlogging Issues 

When part of your crawl space is underwater, you’re going to end up with problems due to waterlogging. When organic materials, such as wood and drywall, stay underwater for long periods, they tend to become weak and start to crumble. That’s the process of waterlogging, which is something that can dramatically impact your crawl space’s health. 

Waterlogging can turn an otherwise healthy and strong crawl space into one that can barely sustain its weight. If you leave a seriously waterlogged crawl space on its own, you may end up with all sorts of problems, including general structural instability and eventually complete floor collapse if it stays for long enough. 

  • High Indoor Humidity 

Don’t assume that your crawl space humidity will stay in your crawl space. If you have standing water in your crawl space that turns into high levels of humidity, you’re also going to end up with serious problems in the rest of your home because the crawl space humidity will rise into the home at large. 

High levels of indoor humidity can have a huge impact on your home as a whole. For example, you may end up with sticking doors and windows, mold that infests any organic materials in your home, and just a generally uncomfortable home. The high indoor humidity levels are an important reason you should fix your crawl space as soon as possible.

Why Might I Need a Crawl Space Drain? 

A crawl space drain is one of the most important things your crawl space can have, especially if you regularly have issues with water. What types of problems may indicate that a crawl space drain is right for you? 

  • Generalized Water Problems 

If you’re having general water problems as a whole, there are several important things you need to pay attention to. First off, you must understand where that water comes from; you’re unlikely to end up with a healthy crawl space if you only fix the symptoms of the problems instead of fixing the underlying causes. 

However, it’s also important that you find some way to get the water out of the crawl space. You need to consider calling in a crawl space repair expert to help you with your current water problems with a crawl space drain. 

  • An Area with Significant Flooding Concerns 

Do you currently live in an area that tends toward flooding issues? If you do have serious flooding problems that tend to recur in and around your home, you’re going to want to do what you can to avoid water pooling in your crawl space from the flooding problems nearby. 

Most of the time, experts recommend installing flood vents for crawl spaces in flood-prone areas. These vents allow water to flow through the crawl space, which reduces the amount of pressure the crawl space walls have to endure. However, this means you need a crawl space drain to pump out any of the water that comes inside the crawl space. 

  • Potential for Internal Leaks 

Does your crawl space have water pipes running through it? If you do have crawl space pipes, you’re at a higher risk for issues with crawl space water concerns. That’s because if any of the pipes in the crawl space spring a leak, you’re going to have to deal with the water. 

There’s nothing wrong with having pipes that run through the crawl space; it’s often a great way to make sure they can be inspected without any damage to your home. However, it does mean that you have to be more diligent about water problems in your crawl space. A crawl space drain is one of the best ways to make sure you avoid issues with internal leaks if they arise. 

Crawl Space Drains


Water in your crawl space can come from a variety of places. You must be able to maximize your ability to handle water in your crawl space, no matter where it’s coming from. 

  • Flooding Internally 

Internal flooding can be one of the most damaging types of flooding because it’s something that you can’t completely protect against. Even if you ensure that your crawl space is completely clear of any openings for water, an internal flood can occur when a pipe bursts for nearly no reason. Other causes of internal flooding include damaged appliances and sewage line blockages. 

Depending on the cause, internally-based flooding can be minor or incredibly severe (as can the damage it causes). Corrosion to a pipe or minor damage to your water heater, for example, may cause small amounts of standing water and a general increase in humidity, but a blocked sewage line could cause total flooding in your crawl space as well as serious damage to your home (and a terrible smell). 

  • Flooding Externally 

External flooding is another potential problem that can cause water in your crawl space. This is much more common if you have openings, such as crawl space vents. However, some areas that have major flooding problems have flood vents to allow the pressure from the outside to vent inside. In these cases, a property will generally also have measures to deal with that flooding. 

As well as the most obvious causes of flooding, e.g. a local river bursting its banks, there are more localized flooding risks to worry about. For example, if you get heavy snowfall followed by a sudden thaw and you have poor drainage on your property, you will likely have some flooding in your crawl space (especially if you have uncovered vents). 

  • Condensation from High Humidity 

Another possible cause of water in your crawl space, albeit a smaller amount, is condensation from high humidity. If you have a very high level of humidity in your crawl space, the humidity level can go above 100%, which will lead to condensation forming in the space. If this happens water will form and trickle down cool surfaces (for example your walls or support columns). 

High levels of humidity, however, are generally caused by a wider problem with dampness and water in a crawl space. This could be caused by uncovered vents letting in warm, humid air or water, cracks in the walls allowing water to seep through, or even by a bare dirt floor letting moisture seep up into your home. Addressing the underlying causes of humidity requires an understanding of just what they are!

Some homeowners need crawl space drains but don’t know why. If you understand the uses of a crawl space drain, you can more thoroughly understand why you might need one. 

  •  Preparing for Floods 

When you have a crawl space drain, you’re preparing for the possibility of a flood and ensuring that your property is ready to deal with it. A flood can come from anywhere, including inside the home, and just allowing the water to remain in your crawl space will inevitably lead to disaster. A crawl space drain will help you prepare for the possibility of a flood. 

There are many options when it comes to drainage, but when you’re looking at keeping a crawl space safe, it is best to choose a specialized model. This is because the water must be collected from below as well as above if you are to keep the crawl space dry overall. This is why we always recommend the CrawlDrain system.

  • Avoiding Water from Any Doors 

Many homeowners have an external door to enter their crawl space – this makes it far easier to access the space for repairs and maintenance, after all. You must get a door that seals firmly, which will prevent most water from coming inside. A door with faulty seals may not leak visibly, after all, but it will let water in and could give way in a flood. 

 A good crawl space drain will make certain that you don’t deal with water that comes in from an external door for long. After all, even the best crawl space doors can become damaged over time; planning for leaks and floods before they occur can save you a lot of time and money on repairs in the long-term.  

  • Ensuring a Cleaner Crawl Space 

Overall, a crawl space drain will make your crawl space cleaner. The drain is likely to help your crawl space remain clean and dry, which is crucial if you’re planning to use it for storage. Rather than just hoping that you never have to deal with crawl space water, a crawl space drain will help you make it less of a problem. 

Of course, if you want to get the best possible results, you should also invest in complementary products to dehumidify and protect your crawl space. A drain can only do so much, after all, but a vapor barrier and a sump pump will ensure that even when your crawl space does flood, your home as a whole stays safe, clean, and dry.

The drain installation process is something that utilizes a lot of professional knowledge. It’s common for homeowners to try to do the installation process themselves, but should you just leave it up to the experts? Here’s what you need to know about crawl space drain installation. 

  • DIY Answers 

A DIY solution for a crawl space drain is unlikely to work. When you utilize a DIY solution, you’re much more likely to end up with problems. Most of the time, dirt and even a small amount of concrete has to be removed to install the crawl space drain, and you likely won’t have the tools you need to do that. Improper installation can lead to several issues.

First and foremost, you could cause injury to yourself or others while trying to excavate in your crawl space – the machinery to do this is fairly heavy and can be dangerous. Secondly, you could damage the drains while installing them and cause them to be less effective. Finally, there is always the possibility that you could install the drain incorrectly, leading to it not working at all!

  • An Expert Solution 

Instead of trying to handle a crawl space drain on your own, it’s a better idea to hand over the project to an expert. An expert can help you understand your needs for a crawl space drain. Plus, when you consult with a company like Foundation Recovery Systems, you can make sure you’re getting a complete answer to your problems. 

Professionals will not only be able to provide you with the best possible products, but they will also ensure proper installation and a certain standard of work. If there are any issues with your drain, you can also contact the professionals who installed it to rectify the problem. Finally, having an expert undertake this work is simply more effective and convenient.

Why Choose the CrawlDrain?

The CrawlDrain has been designed with damp crawl spaces in mind, so while there are many drainage options open to you, it is best to choose CrawlDrain if you have problems with your crawl space. Unlike traditional drainage options, CrawlDrain has openings that face the dirt, allowing it to collect water that seeps up into your crawl space from below. 

The CrawlDrain system prevents clogs from mud and debris from forming with a special filter fabric that allows water to pass into the drain while keeping mud and other clog-creating agents out. As such, the CrawlDrain collects water from above and below and funnels it out of your property quickly.

Made from the highest quality materials, the CrawlDrain is designed to complement the rest of the Foundation Recovery Systems crawl space moisture control system, which includes drainage matting, a sump pump, and vapor barriers. 

How Do I Install a Crawl Space Drain? 

The crawl space drain installation process is an important one for your home and well-being. If you’re thinking about installing a crawl space drain, here’s what you need to know about how the installation process will go. 

  • Add a Perimeter Drain 

First off, you need a perimeter drain in the crawl space. The perimeter drain, as the name would suggest, goes all the way around the crawl space. It typically has holes facing toward the crawl space and the external dirt outside, which means it allows water to drain from both inside and outside the crawl space. 

This perimeter drain can help you reduce hydrostatic pressure around your crawl space and ensure it has no issues with significant amounts of water and pressure. The perimeter drain is a great way to avoid all sorts of problems in your crawl space. 

  • Install a Sump Pump 

Next, you must install a sump pump to pump out the excess water from the crawl space. In many situations, you can install the sump pump completely level with the floor, allowing it to pump out both generalized water through the crawl space and water that comes into the sump pump through the perimeter drain. 

  • Direct the Water Out of the Crawl Space 

When you have the sump pump in your crawl space, you need to make sure you’re directing the additional water out appropriately. It’s not enough to pump it into the sewer system or to spit it out directly outside of the crawl space, where it may end up running back around your structure and contributing to hydrostatic pressure. 

The water in your crawl space needs to be directed much farther out. Again, a crawl space repair expert will be able to let you know how to set up a proper drainage system, which is one of the most important things you can do for the health of your home. 

  • Ask Your FRS Representative About the CrawlDrain System 

Draining water is far easier when you have a CrawlDrain crawl space drainage system in place. Our experts can help you to ensure that your crawl space stays free from water no matter the weather by collecting water from the soil as it seeps up into your home. The unique design of this drain system ensures minimal clogging with a filter material that allows water to pass while keeping mud at bay. This means that you won’t have to worry about cleaning it out every few months, either!

Make Your Home Safer with a Crawl Space Drain Installation from an Expert 

The crawl space drain installation process is complicated and can go wrong very easily. If you’re already dealing with serious crawl space water issues, you might not know how to get rid of the problems you’re experiencing. A crawl space drain installation from an expert is always your best way to go. 

Crawl space drain installations are no joke, which is why you need to maintain your crawl space drain with the help of an expert. A crawl space drain installation needs the best in the business to help it move forward. You can talk to a crawl space repair expert at Foundation Recovery Systems to learn more about your options for getting rid of water and other problems.