Waterproofing Wet Crawl Space in Portsmouth

Crawl space insulation

Dealing with a wet crawl space can lead to severe consequences for your property. Excessive moisture can create an ideal environment for mold growth, which can pose health risks and cause damage to the structure. Also, prolonged moisture exposure can weaken the foundation and support beams, potentially leading to structural issues. Taking immediate action to address these issues, such as implementing proper drainage and moisture barriers, can help prevent costly repairs and safeguard the long-term integrity of your property. It's crucial to address these concerns promptly to mitigate potential long-term consequences and protect the value of your investment.

Waterproofing ensures protection against moisture and potential damage in your crawl space. It safeguards your home from mold, mildew, and structural damage and helps maintain a healthy indoor environment. Contact Northeast Basement Solutions for professional waterproofing services to protect your home from moisture-related damage.

Causes of Wet Crawl Space

Wet crawl space
  • Poor Drainage and Grading: When the grading slopes towards the foundation, water pools around it and seeps into the crawlspace through the foundation walls or the floor. 
  • Clogged Gutters and Downspouts: Overflowing gutters and improperly directed downspouts can discharge rainwater next to your foundation, increasing the risk of water entering the crawlspace through cracks, gaps, or vents.
  • High Water Table: The water table is the level beneath the ground where the soil is saturated with water. It can exert hydrostatic pressure and push water into your crawlspace through the foundation walls or floor. 
  • Plumbing Leaks: Cracked or damaged pipes, loose connections, or malfunctioning appliances can all be culprits, allowing water to seep into the crawlspace.
  • Foundation Cracks and Leaks: Cracks in the foundation walls can provide a direct pathway for water to enter the crawlspace.
  • Condensation: Cracks in the foundation walls can provide a direct pathway for water to enter the crawlspace and contribute to moisture problems
  • Poor Ventilation: Limited air circulation in the crawlspace can trap moisture and prevent it from evaporating.

Wet Crawl Space Waterproofing



The dehumidifier has been designed explicitly for use in your crawl space. Its primary purpose is to effectively reduce and maintain low moisture levels to prevent mold, mildew, and dampness.



The polyethylene barrier in a crawl space is designed to prevent moisture from seeping into the space. It serves the same purpose as a dehumidifier, which also helps reduce air moisture levels.


Vapor Barrier

Vapor barrier, or a moisture barrier, is a plastic or foil sheet used to prevent moisture from entering crawlspaces or other enclosed areas of a building. It helps to avoid condensation, which can lead to mold, mildew, and structural damage. The vapor barrier is typically installed on the warm side of the insulation to keep moisture from reaching the more excellent surfaces within the crawlspace.

Sump Pump

Sump pumps protect your property from potential water damage by preventing flooding and standing water accumulation in your crawl space.


Proper Ventilation

A crawl space requires a ventilation system to ensure proper air circulation and reduce moisture levels. To effectively minimize moisture in the crawl space, it is essential to use vapor-barrier materials that have been approved for this purpose.

Advantages of Crawl Space Waterproofing

Crawl space dehumidification

Waterproofing your crawl space is essential to protect your home from potential water damage and maintain its overall health and integrity. By effectively managing moisture, waterproofing helps to prevent issues such as mold growth, wood rot, and pest infestations, which can compromise the structural integrity of your home. Additionally, a properly waterproofed crawl space can significantly improve the indoor air quality of your home, creating a healthier living environment for you and your family. This process also contributes to increasing the overall energy efficiency of your home by regulating temperature and reducing the workload on your heating and cooling systems. Furthermore, investing in waterproofing not only safeguards your property from potential water damage and associated repair costs but also adds long-term value to your home. This preventive measure can mitigate the risk of flooding, providing peace of mind and significant cost savings over time. Benefits of having a waterproof crawlspace:

  • Prevents Flooding
  • Reduces Mold and Mildew Growth
  • Protects Foundation
  • Improves Indoor Air Quality
  • Increases Energy Efficiency

Trust in Northeast Basement Solutions for Any Crawl Space Issues

Plumbing leaks, heavy rainfall, and low temperatures can create a damp environment in the crawl space, leading to mold growth, wood rot, and structural damage. Therefore, it is highly recommended that professional assistance be sought to thoroughly assess the crawl space and pinpoint the underlying cause of the moisture issue. By doing so, appropriate measures can be taken to effectively resolve the problem and prevent further damage to the property.

Northeast Basement Solutions provides comprehensive solutions to address various crawl space issues. Our team is equipped to handle it all, whether it's moisture problems, insulation issues, or structural concerns. To connect with us, call us at 978-678-4080 or contact us through our online communication channels. We serve various areas, including Portsmouth, Rye, Dover, Brentwood, and other regional service areas.

Recently Completed Jobs

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Winchester, MA

We recommended getting a drainage system installed along with a sump pump to help with the basement water issue. We also recommended a Vapor barrier on her walls to help lock in any water and/or moisture and direct it into the drainage system. The cu...

Haverhill, MA

Customer contacted us looking for basement waterproofing solutions. We installed a sump pump station along with a battery back up system to allow the pump to continue to work during a power outage. We also installed an interior French drain system to...

Amesbury, MA

The customer was having issues with their basement collecting water as well as foundation issues. We broke up the existing concrete, then dug the dirt down 1 foot. Our team then put in new laly columns and a drain system. For the final waterproofing,...

Our customers love us!

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5 out of 24 reviews

Tewksbury, MA

Posted on Google

My interactions with Dan and his team were all very positive. We had a dark and moldy basement that is now a bright and clean home gym. They removed all the carpeting, moldy drywall, broken doors, old and broken ceiling lights and old and broken ceil...

Winchester, MA

Posted on Google

I really appreciated working with Amanda and Miguel and the team. From scheduling, to answering my questions before and after, to the actual work completed, I was very pleased. Miguel is very helpful and a very positive person to work with. The work ...

North Andover , MA

Posted on Google

Miguel and his team did an absolutely amazing job with a great price and quick turnaround. I would 100% recommend them to anyone who has a leaky basement.

Other pages you may be interested in...

Waterproof your crawl space with a sump pump installation with Northeast Basement Solutions in Portsmouth. Get a free inspection today.

Tired of your crawl space drainage problem? Northeast Basement Solutions drainage specialists have more than 20 years of experience in Portsmouth.

For expert crawl space dehumidifier installation call Northeast Basement Solutions today. We are popular in Portsmouth and Rye for our services.

Why Customers Trust Us With Their Basement

Northeast Basement Solutions
  • 20+ Years of Experience
  • Locally Owned and Operated
  • Savings of Up to 50% Over Other Methods
  • A Transferable Lifetime Warranty for Basement Waterproofing Systems
  • We Work With Your Insurance
  • FREE Written Estimates and Inspections, and Fast Installation
Read What Our Customers Are Saying

We pride ourselves with the best customer service in the industry

  • Brentwood, NH
  • 5 Stars

The sump pump installation was done as a first step of a larger basement remodel project. The job was done quickly, done right, and the team made sure to explain what they were doing and why at every step, including a run through of how the system worked and what to expect once it was in. I have since hired Northeast Basement Solutions to do the full project and am having the same good experience thus far. Highest recommendation

  • Lowell, MA
  • 5 Stars

Mark and Miguel are A+ professionals! We used Northeast Basement Solutions for a foundation issue in our new home. They not only came in with a very reasonable quote, they started on the project quickly and took the time to educate us on several things we asked about. They were very responsive and communicated every step of the way. We will definitely be calling them for future waterproofing work. Thanks Northeast!

  • Dover, NH
  • 5 Stars

Would use Dan and team again!

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