8 Common Causes of Water in a Crawl Space

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    Crawl spaces offer homeowners easy access to their houses’ inner workings — such as piping and HVAC systems — to make repairs easy. However, crawl spaces are often prone to water issues despite their functionality. It can be scary to find crawl space moisture in yours, especially if it doesn’t seem draining or appears to have been there for a while. 

    A wet crawl space can cause costly water damage that affects every floor should mold develop. This guide will walk you through all the information you need to know about the causes of water in your crawl space and what to do about it.

    Normal vs. Harmful Amounts of Water in a Crawl Space 

    Finding water in the crawl space is relatively common. For example, you might find a little in a dirt crawl space after a hard rain or storm, but that’s what the space is designed to do. Large pools of standing water should be cause for concern, however. These waters encourage large overgrowths of molds and other microorganisms, damaging your home and lowering its value. 

    checking for water in your crawl space

    Signs of unnatural amounts of water in your crawl spaces include:

    • More than an inch or two that lasts for more than a day or a crawl space flooding
    • Water that emits a strong odor of mold and mildew
    • Changes in watercolor from clear to greenish or yellowish color
    • Water that has a thick viscosity

    Understanding why standing water under a house might wind up in a crawl space is the first step toward remediating such problems and avoiding costly — in terms of money and health — issues in the future. Let’s take a look at some of the most common causes of water in crawl spaces under houses that contractors or inspectors identify.

    8 Causes of Water in a Crawl Space

    Are crawl spaces bad? Only when damage issues arise. The best way to fix water damage in your crawl spaces is to take preventive measures. Here are several ways water can get into your home and how to stop it from causing short-term and long-term problems like wet crawl space repair.

    1. Poor grading

    Proper grading is vital in protecting your property from leakage. You must ensure adequate sloped grading around your home’s foundation and crawl space, guaranteeing no water pooling around or entering your home.

    You want to achieve a slope of 6 to 8 inches away from the foundation walls and make it part of your routine to check your grade annually once the ground thaws. You will then be able to do some fixing if the winter washed away or caused any shifts in the structure.

    1. Downspouts and gutter issues

    Dirty or clogged gutters and malfunctioning downspouts are the leading causes of a water leaks under house crawl spaces. Routinely ensure your gutters are cleaned to eliminate leaves and debris that cause clogging. Your downspouts should be pointed as far away from your foundation as possible and feature a two-foot splash block at the bottom to redirect waterways. 

    Problems with downspouts require expert assessment and the development of ideal ways to redirect water away from your home. Buildings that lack downspouts and those with downspouts facing them are prone to issues with standing water.

    1. Subterranean water issues

    Subterranean water problems in your crawl space are caused by underground water sources. The most common is broken city lines. If you are sure this is the cause of water in your crawl space, call the municipality to come onsite and fix any leaking lines on their end. Although you are not the cause of the leakages, you will still have to pay for the damages the water caused to your home.

    1. Problems with foundation walls

    Foundation walls can create a dam that causes the water to seep underground. If the water finds an opening — even a tiny crack — it will eventually rest in your crawl space and may erode that entry point to worsen it. Repair any cracks or damage to your home’s foundation walls to prevent water from seeping into the crawl space.

    1. Underground drainage issues

    Improperly designed underground drains can be damaged, plugged, or have insufficient slopes. Water leaks under your house crawl space will develop with time, and water will slowly find its way into your crawl space. Install French drains or other drainage systems around the perimeter of your home to direct water away from the foundation.

    1. Small drainage system capacity

    A rainstorm can create too much water for a drainage system to handle. This will result in the formation of large pools of water that will eventually seep deep into the soil — and then into your basement and crawlspace. If your current drainage system is inadequate, install a larger system or additional drainage features to accommodate excess water.

    1. Overwatering flower beds

    The presence of water in your crawl space could result from your own direct actions. If you leave a hose running for too long near the side of your foundation, water can pool and slip through your basement and then flood your crawl space. Emergency water damage services are not typically very cheap, so this is definitely something you’ll want to watch for.

    You can quickly resolve this by turning off the water or replacing the sprinkler. If the water that collects has caused erosion, fill in the area using compact soil and ensure you create a slope that enables liquid to divert away from the foundation.

    1. A broken pipe

    A water pipe that has developed leaks or has burst will let water flow where it shouldn’t, including into your crawl space. To prevent such scenarios, have an expert plumber inspect the whole piping system and fix any leaks. 

    broken pipe causing water in crawl space

    One of the best ways to keep your home safe is to undertake a routine visual inventory and crawl space inspection to identify obvious wet spots and their sources. The quicker you know there’s a problem, the fewer chances that standing water will have to wreak long-term havoc. To avoid costly problems in the future, consider some repair services such as a crawl space drainage system, conditioning the crawl space, installing a vapor barrier, closing crawl spaces, and crawl space encapsulation. These solutions will help keep the crawl space dry and prevent water damage to your home.

    Why It’s Important to Fix Standing Water Quickly

    The truth is that there are several risks associated with standing water under house beyond just the unsightly puddle. Many can even have impacts on your family’s health and well-being, so it’s important to keep an eye out for things such as:

    • Mold/mildew growth

    Increasing levels of water vapor and humidity can lead to the growth of mold, mildew, and other harmful microorganisms. Therefore, closing or sealing any open crawl space vents is important. Instead, consider installing a dehumidifier to effectively control the crawl space’s moisture and humidity levels, thus reducing the risk of harmful mold and mildew growth.

    • Structural damage 

    Water that enters your home can cause significant and costly issues to the structural integrity of your house, including warped supports and joists, erosion of and cracking in the foundation, and more. Thus, crawl space water removal should be taken as action immediately once you notice any signs of the problem.

    • Insect infestation

    Crawl spaces with excess moisture are ideal shelters for insects like carpenter ants and wildlife that thrives in damp environments.

    • Health problems

    The elderly, children, and individuals with existing respiratory sensitivities are at higher risk when exposed to the black mold, mildew, fungus, and microorganisms growing in your dump crawl space. Also, if you notice a bad crawl space odor, it is essential to address it promptly to prevent harm to your family’s health. Damp crawl space can also causes chronic allergies, colds, flus, sore throats, sneezing, and skin irritations, so it is important to be aware of any common symptoms of wet and damp crawl space.

    Notice Water in Your Crawl Space?

    Your home’s crawl space comprises several vital parts of its foundation, and a compromised one endangers your property’s structural integrity and your family’s health. A damp, cold, flooded crawl space is also a cause of the high cost of energy bills. 

    Identifying the causes of water in your crawl space is the first step toward remediation. It’s crucial to take preventive measures to avoid costly issues in the future, such as sump pumps, wet crawl space repair, installing a vapor barrier, a crawl space drainage system, crawl space conditioning, or crawl space encapsulation. Water in crawl space repair costs may vary depending on the extent of the damage and the repair solution you choose. And taking steps to address water issues in your crawl space sooner rather than later can ultimately save you money in the long run.

    If you are a homeowner with crawl space water issues, have a qualified expert crawl space company come out to assess the problems as soon as possible. Contact LUX Foundation Solutions today to speak with an expert about any water in crawl space questions you might have.