Basement / Crawl Space Flooded? Now What?

Basement floods are a homeowner’s nightmare, turning the discovery of a flooded basement or crawl space into an overwhelming experience. When faced with water damage, it’s crucial to act quickly and efficiently to minimize damage and protect your home


When You notice a strange odor that leads you straight to the basement or garage… What turns out? It is full of water and other gunk. Or it has just rained extremely hard, and you are struggling with a flooded cellar… What do you do? As an experienced company, we will tell you the causes of basement floods and how to tackle the problem best. 

Basement / Crawl Space Flooded? Now What?
Basement / Crawl Space Flooded? Now What?

Basement Floods Causes

Basement floods can result from various factors, ranging from natural disasters to plumbing issues. Understanding the potential causes can help you identify the source of the problem, take preventive measures, and implement appropriate solutions. Some common causes of a flooded basement include:

Heavy rainfall and storms

Excessive rainfall or storms can lead to an accumulation of water around your home’s foundation, which can eventually seep into your basement if the drainage system is inadequate.


Rapid snowmelt in the spring can cause flooding, especially if the ground is still frozen and unable to absorb the water.

Poor drainage

Improper grading around your home clogged gutters, or malfunctioning downspouts can cause water to pool near the foundation and seep into the basement.

Foundation cracks

Cracks in your home’s foundation can allow water to enter the basement. These cracks can be the result of soil movement, hydrostatic pressure, or the natural aging process of the building materials.

Plumbing issues

Burst pipes, leaking water heaters, or broken sump pumps can lead to basement flooding. Regular maintenance and inspection of your plumbing system can help prevent such issues.

Sewer backup

Heavy rainfall or clogged sewer lines can cause water or sewage to back up into your basement through floor drains or other openings.

High water table

If your home is located in an area with a high water table, water can seep into the basement through the porous materials in your foundation or floor.

Window well leakage

Poorly installed or damaged window wells can allow water to enter your basement through the window openings.


  • By identifying the cause of your basement floods you can take appropriate action to fix the issue and prevent future occurrences. Regular maintenance, proper drainage, and waterproofing solutions can go a long way in keeping your basement dry and safe.

What to Do When Your Basement Floods?

You have water in the basement and maybe some mud or other filth. How do you best solve such a basement flood? First, determine the cause of the flooding. Is it due to heavy rainfall? However, if your flooded basement was not caused by rain, it is most likely due to the pipes underneath. A camera inspection will advise you to detect a break in the water supply or leaking sewerage. 

When faced with a flooded basement, it’s important to take a series of steps to ensure your safety, minimize damage, and address the root cause of the flooding. Here’s what you should do if you discover a basement flood:

Prioritize safety:

  • Turn off electricity and gas: Before entering the flooded area, make sure to shut off the electricity and gas supply to the affected area to avoid electrocution or gas leaks.
  • Wear appropriate protective gear: Put on waterproof boots, gloves, and a face mask to protect yourself from potential hazards in the water, such as contaminants or sharp objects.
  • Beware of structural damage: Exercise caution when entering the basement, as water damage can weaken the structure, making it unsafe.

Initial assessment:

  • Identify the source of flooding: Determine whether the flooding is due to heavy rainfall, a burst pipe, or another cause, so you can address the problem effectively. 
  • Evaluate the extent of damage: Assess how much water has entered the basement, the depth of the water, and the affected areas.
  • Document the damage: Take photos and videos of the flooded area to provide evidence for insurance claims later.

Water extraction:

  • DIY methods: If the flooding is minor, you can remove the water using buckets, a wet-dry vacuum, or a sump pump.
  • Professional assistance: If the flooding is severe, consider hiring a professional water restoration company to remove the water quickly and efficiently.
  • Drying and dehumidification: Use fans and dehumidifiers to dry out the affected area, which can help prevent mold growth and further damage.

Damage assessment:

  • Inspect walls, flooring, and insulation: Check for water damage and signs of mold or mildew on walls, flooring, and insulation materials.
  • Assess belongings and storage items: Sort through your possessions to determine what can be salvaged, cleaned, or needs to be discarded.
  • Check for mold and mildew: Look for visible mold growth or musty odors, as mold can pose health risks and further damage your property.

Remediation strategies:

  • Cleaning and sanitizing: Clean and disinfect affected surfaces and materials using appropriate cleaning solutions.
  • Repair or replace damaged materials: Depending on the extent of the damage, you may need to repair or replace walls, flooring, or insulation.
  • Mold and mildew prevention: Take steps to prevent mold growth, such as drying the area thoroughly, using dehumidifiers, and applying mold-resistant products.

Preventative measures:

To avoid future flooding incidents, consider implementing preventative measures such as installing a sump pump, improving drainage, and regularly maintaining your plumbing system.

Preventing Future Basement Floods

Preventing future floods in your basement or crawl space is crucial to avoid recurring water damage and protect your home’s structure and belongings. Implementing the following preventative measures can help reduce the risk of flooding:



Regular maintenance and inspection Schedule routine maintenance and inspection of your plumbing system, gutters, downspouts, and sump pump. This can help identify potential issues early on and prevent water intrusion.
Install a sump pump and backup system. A sump pump is designed to remove water that accumulates in your basement or crawl space. Installing a sump pump and a backup system, such as a battery-powered pump, can help keep your basement dry during heavy rains or power outages.
Invest in a flood alarm. Installing a flood alarm or water sensor in your basement or crawl space can provide early warning of water intrusion, allowing you to take immediate action to prevent further damage.
Evaluate landscaping and drainage. Ensure that the grading around your home slopes away from the foundation to prevent water from pooling near the walls. Clean and maintain gutters and downspouts regularly to ensure proper drainage during heavy rains.
Waterproof your basement or crawl space Apply waterproofing solutions to your basement walls and floor, such as sealants or specialized coatings, to prevent water seepage. Installing a vapor barrier in your crawl space can also help prevent moisture buildup.
Seal foundation cracks Inspect your foundation for cracks or gaps, and use appropriate materials to seal them. This can help prevent water from entering your basement or crawl space.
Install window well covers. If your basement has window wells, consider installing covers to prevent water from entering through the windows during heavy rains.
Inspect and maintain your sewer system. Regularly inspect your sewer system for clogs or damage, and address any issues promptly. Install a backwater valve to prevent sewer backups during heavy rains.
Monitor the groundwater level If your home is located in an area with a high water table, consider installing a French drain or other drainage solutions to redirect groundwater away from your home’s foundation.


By implementing these preventative measures, you can significantly reduce the risk of future floods in your basement or crawl space, safeguarding your home’s structure and your belongings while providing peace of mind.

Importance of quick action and informed decisions

Taking quick action and making informed decisions when dealing with a flooded basement or crawl space is essential for several reasons:

  1. Minimizing the damage: The longer water sits in your basement or crawl space, the more damage it can cause to your home’s structure, including the walls, floors, and insulation. Acting quickly to remove the water can help minimize the extent of the damage and reduce the cost of repairs.

  2. Preventing mold and mildew growth: Mold and mildew can begin to grow within 24-48 hours in damp conditions. Quickly addressing water intrusion and thoroughly drying the affected area can help prevent the growth of mold and mildew, which can pose health risks and further damage your property.

  3. Salvaging belongings: Acting quickly increases the chances of salvaging your possessions, such as furniture, electronics, and personal items. The longer these items are exposed to water, the more likely they are to be irreparably damaged.

  4. Reducing health risks: Floodwater can contain contaminants, such as bacteria, viruses, and chemicals, which can pose health risks if not dealt with promptly. Taking immediate action to remove the water and sanitize the area can help protect you and your family’s health.

  5. Facilitating insurance claims: Documenting the damage and taking immediate steps to address the issue can help support your insurance claim. Insurance companies may be less likely to cover the costs of damage if you have not taken reasonable steps to mitigate the problem.

  6. Preventing future incidents: By identifying the cause of the flooding and taking appropriate measures to address the issue, you can help prevent future incidents. This may involve repairing or replacing damaged materials, improving drainage, or implementing other preventative measures.


Encountering basement floods or crawl space can be a challenging and stressful experience for any homeowner. However, with the right knowledge and quick action, you can manage the situation effectively and mitigate the damage. By following the steps outlined in this guide, you’ll be able to address the flooding issue, restore your home to its former state, and implement preventative measures to reduce the risk of future floods.

Remember, the key to successfully dealing with a flooded basement or crawl space is taking prompt action and making informed decisions. This approach not only minimizes damage and prevents potential health hazards but also ensures the long-term safety and well-being of your home and its occupants. Stay vigilant, be proactive, and protect your home from the perils of flooding.

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To prevent mold growth, promptly remove the water, dry the area thoroughly using fans and dehumidifiers, clean and sanitize affected surfaces, and consider using mold-resistant products on walls, flooring, and insulation materials.

Mold and mildew can begin to grow within 24-48 hours in damp conditions. It’s crucial to address water intrusion and thoroughly dry the affected area as quickly as possible to prevent its growth.

Before entering the flooded area, shut off the electricity and gas supply, wear appropriate protective gear like waterproof boots, gloves, and a face mask, and be cautious of any structural damage.

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