Hockessin, DE's Go To Basement, Crawl Space, & Mold Remediation Experts

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Hockessin's Basement Experts

Basement Systems USA is the local, family owned contractor in Hockessin for waterproofing, crawl space repair and mold removal. With over 75 years combined experience and a full-time, professional staff we are ready to serve you and improve your home. 

Basement Waterproofing & Crawl Space Repair

Flooding, water seepage or even high humidity can quickly result in mold growth and water damage in your basement or crawl space. We prevent this from happening by installing an interior drainage system in the basement that is connected to a high volume sump pump. Any water that makes it to the basement is collected and pumped out of the home without you even noticing. 

Just like the basement, in the crawl space we similarly place a sump pump system and dehumidifier to prevent water issues. The entire area is encapsulated with vapor barrier to prevent mold growth. Our crawl space system comes with a 25-year warranty. 

We Provide:
  • Basement Waterproofing
  • Crawl Space Encapsulation
  • Exclusive, Patented Products
  • Humidity Control
You Receive:
  • Permanently Dry Basement
  • Clean Protected Crawlspace
  • Protection against Mold
  • Improved Home Value

If the walls of the basement or bowing inwards we install wall anchors or braces to straighten the walls. If the floor above the crawl space is sagging we install SmartJack support jacks to raise the floor back to a level position. Our Hockessin waterproofing systems come with life-time warranties. 

Mold Removal & Remediation

At Basement Systems USA, we provide full mold remediation for basements, including air sample testing. Our company has the ability to not just remediate the mold, but also remove the source of the mold, which is moisture. Unlike other mold remediation companies, our background in basement & crawlspace waterproofing allows us the make sure that the mold won't come back after it has been remediated. We are also AMA Certified.

Our Services Include :

  • Mold & dust mite control           
  • Dehumidifier Installation
  • Crawl Space Encapsulation
  • IAQ 6000 Mold Encapsulant


  • Black Mold Removal
  • Dry rot cleaning & repair
  • Shockwave by Fiberlock Disinfectant & Sanitizer
  • TBF Waterproof & Mold Resistant Wall Boards
  • Negative Air Machine Installation


Before and After Pictures from Hockessin

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The customer wanted to finish the basement, but this basement needed some work done first.  First, we installed the WaterGuard waterproofing system.  Then we added CarbonArmor to repair the bowing foundation wall.  We also had to add an egress to meet code.  The we finished the basement with our TBF finishing system, which comes with a 50-year guarantee against water or mold damage.  We finished the job with some nice barn doors and our grey Thermal Plank flooring.   

Job Stories From Hockessin, DE
Waterproofing a Completely Finished Basement in Hockessin, DE

This house was for sale with a contract but failed inspection due to signs of water seepage and mold spot on the drywall.  No use doing mold remediation until you have eliminated the source of the mold, which was foundation water seepage and high levels of humidity in the basement.  This basement was complete finished with bathrooms and floor coverings.  

First we removed all the moldy carpet.  Then we cut the bottom of the wall so we could remove and haul away the moldy drywall.  Then we cut the concrete floor and installed our Waterguard system with TripleSafe Sump to stop the water seepage.  We also installed our SaniDry super dehumidifier.

Next, we re-cemented the floor and reinstallation of the bottom of the walls.  But we would never use drywall for this because drywall is very vulnerable to mold and water damage.  Instead we use TBF Everlast wall, which is non-organic and comes with a 50-year guarantee against water and mold damage.  Then we replaced the flooring with 100% waterproof flooring specifically designed for basements.  The end result is a dry, mold free, beautiful basement.  

Waterproofing a Completely Finished Basement in Hockessin, DE - Photo 1Waterproofing a Completely Finished Basement in Hockessin, DE - Photo 2Waterproofing a Completely Finished Basement in Hockessin, DE - Photo 3Waterproofing a Completely Finished Basement in Hockessin, DE - Photo 4Waterproofing a Completely Finished Basement in Hockessin, DE - Photo 5Waterproofing a Completely Finished Basement in Hockessin, DE - Photo 6Waterproofing a Completely Finished Basement in Hockessin, DE - Photo 7Waterproofing a Completely Finished Basement in Hockessin, DE - Photo 8Waterproofing a Completely Finished Basement in Hockessin, DE - Photo 9
Work Requests From Hockessin, DE
Project Location: Hockessin, DE
Basement shows significant signs of moisture and mold primarily in the basement.
Project Location: Hockessin, DE
We are looking to finish our basement, will need to first start with egress.
Project Location: Hockessin, DE
We just moved and have a large unfinished basement in our new home that we would like to finish part of.
Project Location: Hockessin, DE
Suspected mold in basement need it tested and removed if necessary.
Project Location: Hockessin, DE
I would like to get an estimate for installing a radon mitigation system and sealing some foundation wall seams which drip into the French drains during heavy rain. I am preparing my basement for framing/finishing, which I will mostly DIY.
Project Location: Hockessin, DE
Observed foundation cracks. would like to have it checked out whether there is structural concern, and estimated for repairs
Project Location: Hockessin, DE
Project Location: Hockessin, DE
Good morning. We moved into a new house in Hockessin DE back in October. The inspection radon levels were in the 4.8 & 4.9 range. We are looking for quotes/options to remediate, especially as we are considering to air seal/insulate the house.
Project Location: Hockessin, DE
There is an existing perimeter drainage system in the home installed by the previous owners. We have 2 sump pump holes and 4 sump pumps (2 are back-up). There is moisture and mold in the basement. We need it handled so the house may be sold.
Project Location: Hockessin, DE
Dual sump pump fails resulted in wet carpet and padding. Looking to remodel with waterproof alternatives.
Project Location: Hockessin, DE
Water penetration in my crawl space
Project Location: Hockessin, DE
I have a moldy storage ( concrete walls ) in the basement. Please help!!
Project Location: Hockessin, DE
We have a leak when it rains around one of our basement windows. We have a poured foundation which is 12 years old.
Project Location: Hockessin, DE
We have Bilco doors leading to the basement that leak. We don't simply need the doors replaced but the foundation and stairs as well. We also have another leak in the basement. We don't know where the water is coming from.
Project Location: Hockessin, DE
Finish basement
Project Location: Hockessin, DE
In market for 2, open-in egress windows. Also interested in perhaps installing stairs in lieu of 1 of the 2 egress windows.
Project Location: Hockessin, DE
Finish an unfinished basement
Project Location: Hockessin, DE
Cinder block walls have been wet in past and have white precipitate. We are interested in learning our options for getting them cleaned, perhaps treated, and/or painted. We are also looking into low-cost partial finishing of the basement. This might include ceiling cover (low clearance), and partial floor covering over current concrete. Already have French drain and good sump pump with battery back-up.
Project Location: Hockessin, DE
Egress basement window
Project Location: Hockessin, DE
Cracks and miners water leak

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