Basement Waterproofing in Knoxville

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Do I Need Basement Waterproofing in Knoxville?

Homes with damp basements or humidity problems in Knoxville, can benefit from comprehensive basement waterproofing services year-round.

The city’s humid subtropical climate means plenty of excess moisture and humidity in the air. When left unchecked in places like your basement, which can have minimal ventilation, it can lead to mold, mildew, and water damage on exposed surfaces. Additionally, the amount of rainfall and snow in Knoxville throughout the year can have risks of basement flooding.

Left unchecked, this could lead to short- and long-term issues. If you use your basement for storage, you could expose your belongings to high humidity and moisture levels that can damage them. Rain could seep past your foundation walls and enter the basement, causing severe flooding.

If your home has experienced basement flooding, mold growth, or early signs of high humidity, you may need basement waterproofing in Tennessee. At Crawl Space Ninja®, our specialists deliver basement waterproofing and humidity control in Knoxville. After a thorough on-site assessment, we can advise whether you need exterior waterproofing, yard drainage, downspout extensions, foundation repair, or basement dehumidifier.

Brian Rector

Brian Rector

"The whole process was great. Everyone we interacted with was professional and courteous. Celeste was great. Russell, Chase, and Will were terrific and did a great job. We no longer run a dehumidifier in our cabin, which we were having to run even in the dead of winter. Would not hesitate to recommend to anyone"

Donna Claes

Donna Claes

"We've had a lot of work done on our home recently and these guys have been by far the best to work with. Russell, Chase, Will and Ethan were absolute joys to work with. They were very professional, cleaned up completely every day (I swear the garage was cleaner after they left than it was before they got there!)."

Wes Salyers

Wes Salyers

"Crawl space ninja is great. Celeste and the rest of the team did a great job at assessing the needs of our crawl space and applying the appropriate solution. They showed up on time, communicated well, and provided high quality service and products. I would highly recommend them to anyone."

Wet Basement Warning Signs in Knoxville

Identify Early Indicators of Basement Moisture Before They Escalate

It’s best to do a quick inspection of your basement after heavy rains or storms. However, even outside Knoxville’s rainy seasons, factors like humidity, moisture, and temperature can affect your basement and everything in it at all times. 

Here are some of the red flags to spot. They might not be a problem now, but they’re a sign that your basement’s lack of dehumidification, temperature control, and waterproofing can lead to even more significant problems down the road. 


  • Water Stains: These are dried mineral deposits often found on hard surfaces. 
  • Efflorescence: Salt, calcium, or any white crystalline deposits that form on your basement walls. 
  • Mold or Mildew: Typically black or green organic spots that grow on textiles and other materials exposed to moisture and humidity. 
  • Dampness: If your surfaces feel wet to the touch, it’s a sign of excess moisture in the air. 
  • Cracked Walls: Excess moisture can cause your walls to swell and crack. 
  • Pooling Water: Pooling water in your basement suggests a leak from your home's foundation or other parts. 
  • Bowed Walls: Bowed basement walls can be caused by foundation issues from excess moisture and pressure from the surrounding soil.
  • Musty Odors: This suggests dampness, mold, bacterial growth, and poor ventilation that fails to remove the odors. 
  • Peeling Paint: Water or excess moisture in the air can cause paint to crack and peel off.
  • Rust: Rusted metal surfaces in your basement suggest excess moisture and humidity in the area. 
  • High Humidity Levels: This results from high humidity, poor insulation, and insufficient ventilation or dehumidification
  • Foundation Settling or Sinking: Leaking foundations can result in water pooling beneath or around them, causing the soil to shrink, erode, or put more stress on the basement and foundation. 


Basement Waterproofing Repair Experts

Crawl Space Ninja is your team of go-to basement waterproofing specialists. We deliver solutions such as basement water repair in Knoxville, Tennessee, and other services to keep your property safe and sound. While water damage is more likely to occur from March to August when rains are more frequent in Knoxville, unchecked signs of high humidity and moisture in your basement can lead to long-term issues year-round. 

With over 15 years of experience and plenty of satisfied clients, we are the basement experts you can trust to treat existing issues in your basement and prevent long-term problems from causing significant damage to your entire property structure.

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Hydraway Waterproofing System

Our Hydraway Waterproofing System uses cutting-edge technology to provide unparalleled protection against water seepage and leaks. The Hydraway drainage channels are designed to move water much more rapidly than traditional drainage channels to a sump pump.


The Hydraway system is installed under the concrete slab foundation of your home to intercept water before it enters your basement. This interior waterproofing system is ideal for homes in high water table areas or those that experience heavy rain and storms.

The Hydraway Waterproofing System provides comprehensive below-slab protection and is guaranteed to keep your basement dry and comfortable. For a free estimate on installing the innovative Hydraway Waterproofing System in your basement, contact us today.

Indoor Basement Drainage

Choosing the right home system is crucial for maximizing your investment in basement waterproofing. The proper drainage solution isn’t about how fast it can be installed but its effectiveness at ensuring your home has adequate protection against water damage. 

Indoor Basement Drainage solutions safeguard your basement, crawl space, or foundation from water damage. These systems are specifically designed to swiftly and efficiently collect and redirect water away from your home. When your home has the right system, it can effectively keep your basement dry and prevent mold, mildew, rot, and other costly property damage. Crawl Space Ninja can install these systems with minimal disruption to your household.

Drain Tile Systems

Installing Drain Tile Systems is a common and effective solution for waterproofing your basement. Pipe assemblies are installed around the foundation, so water is redirected away from your home and into a sump pump, which can help prevent basement flooding. However, some systems can clog from particles entering, so adding a silt filter can prevent clogging. 

For an overall effective solution to waterproof your basement that’s less likely to clog or damage over time, we recommend the Hydraway Drain Tile System. With proper installation and maintenance, this system can keep your home safe while preventing clogging issues that reduce its effectiveness. Get in touch with us for inquiries about installing the Hydraway Drain Tile System on your property. 

Sump Pump Systems

Sump pumps play a vital role in your basement waterproofing system as they redirect water from pooling around your home’s foundation. When installed properly, they can safeguard your home against flooding that can lead to foundation issues, resulting in costly structural damage. By installing a well-designed sump pump system, you can have peace of mind knowing that your basement or crawl space can stay dry.

Sump Pump Battery Backup Systems

Storms can potentially cause issues in your home, including power outages and flooding in your basement or crawl space. Protect your home from these hazards by having a battery backup system installed. If a storm passes your home, your sump pump will continue to operate and keep excess rainwater away from your home’s foundation.  

Basement Dehumidifiers

The Aprilaire dehumidifier offers humid-regulation solutions in your basement. By managing the excess moisture, you can prevent mold, rot, and fungi from developing in your basement’s environment. For larger basements, Crawl Space Ninja’s basement specialists can also install energy-efficient basement dehumidifiers to manage larger moisture volumes. Let’s bring your highly humid spaces down to an optimal 60% humidity level. 

Our dehumidification solutions can improve the air quality in your basement and keep your indoor spaces healthy and comfortable for a long time. Contact us today to learn more about how we can help you manage the humidity in your home.

Hydraway Basement Waterproofing Features & Benefits

  • Tried and Tested Engineered System: Will not clog, no known failures!
  • Reduces Hydrostatic Pressure: The Hydraway Basement acts as a shallow underdrain to relieve pressure and reduce humidity.
  • High Compressive Strength: It features a heavy-duty geotextile fabric that’s fusion-bonded to a rugged polyethylene lattice core. It also offers additional high compressive strength and support.
  • High Efficiency: Provides a 90% omnidirectional water entry rate and a 70% higher flow rate than traditional drainage systems. It replaces the most traditional drain systems’ fabric, perforated pipes, and backfill and doesn’t depend on rocks as filters.
  • Does Not Support Fungus Growth: Compared to typical polystyrene polymers, its polyethylene core is flexible, lightweight, and chemically resistant.  
  • Fusion-Bonded: Compared to traditional gluing, the polyethylene lattice core and fabric provide fungus growth resistance and keep the material firmly attached, even when exposed to high heat and humidity. 
  • Machine Installed: Ensure your waterproofing systems are installed correctly using conventional trenching equipment. This system requires less manual labor and equipment to install compared to traditional drain systems.
  • Withstands Cold Temperatures: Rolls are wrapped separately, and their flexibility ensures easy installation even at low temperatures.

Bowing Foundation Walls

Signs your basement walls are beginning to bow:

  • Horizontal or stair step cracks
  • Diagonal cracks in the corner
  • Inward bowing or bulging
  • Wall slides inward at the bottom or top
  • Gaps in mortar joint
  • Soil entering basement
  • Cracks in concrete

Solutions to bowing basement walls:

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Basement Waterproofing FAQs in Knoxville