Preventing Water Intrusion Inside and Outside For A Dry And Secure Crawl Space

Protect your crawlspace from water intrusion inside and outside with crawl space waterproofing.  By providing water mitigation management solutions, it ensures a dry, safe, and healthy environment for you and your family.

What is Crawl Space Waterproofing?

A well-done crawl space waterproofing in Fairfax, VA to protect the crawlspace from water intrusion inside and outside.

Crawl space waterproofing is a comprehensive solution to address and prevent water intrusion inside and outside your home’s crawlspace. It consists of one or two systems: interior crawl space waterproofing and/or exterior crawl space waterproofing.

Interior crawl space waterproofing focuses on managing water that has already infiltrated inside your crawlspace. It involves sealing any cracks and installing a vapor barrier to prevent water and moisture from seeping into your home. Additionally, installing interior drainage systems and sump pumps to manage any water that may still find its way into the space, expelling it efficiently to protect your property.

Exterior crawl space waterproofing prevents moisture and water intrusion by applying high-grade waterproof membranes and utilizing exterior drainage systems to manage water intrusion effectively and redirect water away from your crawlspace foundation.

Why is it crucial? Moisture in your crawlspaces can lead to a myriad of problems. By waterproofing a crawl space inside and/or outside, you’re taking the first step towards enhancing your home’s longevity, improving indoor air quality, and ultimately securing the well-being of your family. There’s more to this service than meets the eye—it’s an investment in a safer and healthier future.

Why is Crawl Space Waterproofing Necessary?

Waterproofing a crawl space inside and/or outside is more than a preventative measure—it’s necessary for your home’s structural integrity and your family’s healthy living. Here are some crucial reasons to consider:

Signs You Need Crawl Space Waterproofing

Discover the red flags indicating your crawlspace needs urgent attention. If you notice any of the following signs, it’s time to consider our interior or exterior waterproofing:

How to Waterproof a Crawl Space?

LUX crawl space waterproofing involves a comprehensive approach with several components working in tandem to keep your home dry and safe.

Interior Crawl Space Waterproofing

1. Cleaning the Area

Waterproofing a crawl space begins with thoroughly cleaning and removing any debris or accumulated dirt in the space. This is crucial to create a clean and suitable surface for subsequent measures.


2. Repair or Sealing Cracks

Once the crawlspace is clean, the next step is to repair or seal any existing cracks or openings in the crawlspace foundation or walls, which are common entry points for water. Our experts will carefully inspect your crawlspace to identify and repair all existing cracks that could allow water intrusion.


3. Interior Drainage System

An interior drainage system is strategically installed along the crawl space’s interior perimeter. This system efficiently manages, collects, and diverts incoming water toward a sump pit, effectively preventing any pooling in the crawlspace using a French drain.  This will prevent water pooling in your crawlspace, effectively protecting your home’s foundation from potential water damage.

4. Sump Pump

In addition to the interior drainage system, our team installs a reliable sump pump that redirects water away from your home. This sump pump efficiently discharges water to a safe distance, preventing any potential flooding or water damage to your property. 


5. Vapor Barriers

Our solution includes the installation of high-quality, durable vapor barriers that cover the crawl space floor and walls. These robust vapor barriers create an effective shield against moisture, pests, mold, and mildew, providing a resilient defense for your crawlspace.

Exterior Crawl Space Waterproofing

1. Excavate the area, clean and prepare foundation walls

The area surrounding the crawlspace is excavated to expose the foundation walls. Once exposed, the walls are thoroughly cleaned and prepared for the next step to ensure an effective application of waterproofing membranes.


2. Waterproof membranes 

We apply waterproof membranes to safeguard your crawlspace from water intrusion. These are like special covers that keep water out, ensuring that your crawlspace stays dry and secure.

3. Exterior Drainage systems

Setting up effective drainage systems on the outside. This involves proper grading and slope and adding extensions to downspouts. These measures ensure that water is directed away from your home’s foundation, helping to keep your crawlspace and the rest of your home free from water-related issues.


These combined interior and exterior waterproofing features ensure that your home is protected against the potential damages caused by water intrusion, promoting a healthy living environment while preserving your property’s long-term value.

The Installation Video of Crawl Space Waterproofing

Watch our team in action as they meticulously install a comprehensive interior and exterior waterproofing system in Northern Virginia, employing top-quality materials and skilled craftsmanship. Witness how we transform damp, vulnerable crawlspaces into dry, protected areas.

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Before and After Images of Crawl Space Waterproofing Installation

Explore our gallery to witness the remarkable transformations achieved with our interior crawl space waterproofing and exterior crawl space waterproofing. From damp and vulnerable to dry and secure, our before-and-after images tell a compelling story of safeguarding your home against water damage.

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Why Choose LUX Exterior Crawl Space Waterproofing?

With LUX crawl space waterproofing, here are several compelling reasons why our system stands out:

The LUX team installing crawl space waterproofing in Martinsburg, WV, to create a dry, safe, and healthy home environment.

Ready to Secure Your Home? Get Started with Crawl Space Waterproofing Today

Don’t let water intrusion lead to costly repairs. LUX Foundation Solutions will help you with cost-effective, long-lasting solutions that safeguard your home’s foundation, integrity, and air quality while offering you the peace of mind you deserve.  Whether interior crawl space waterproofing or exterior crawl space waterproofing, we will ensure your home remains protected from water damage and contributes to a healthier, more energy-efficient living environment. 


Secure your Virginia property’s health and structural integrity for years to come with our comprehensive crawl space repair servicesContact us at 540-508-8587 or request a free online estimate—there’s never been a better time to take action and protect your home.

Our committed team is ready to fortify your home, proudly serving crawl space waterproofing in Northern Virginia, West Virginia, North Central Virginia, Shenandoah Valley, and surrounding areas.

Request a free Estimate


What causes exterior water intrusion in crawl spaces?

Exterior water intrusion in crawlspaces commonly arises from issues such as:

  • Inadequate Grading: Improper landscape grading that directs water toward the foundation.
  • Poor Drainage Systems: Issues with gutters, downspouts, or improper water channeling, leading to water accumulation near the foundation.
  • Cracks and Weaknesses: Structural vulnerabilities in exterior walls and the foundation act as direct entry points for water during heavy rainfall.
  • Surface Water Runoff: Problems with managing surface water, especially during heavy rain or snowmelt, saturating the ground, and finding pathways into the crawlspace.
  • Compromised Waterproofing: Ineffective or deteriorated exterior waterproofing systems that fail to prevent water infiltration.
How does exterior waterproofing differ from interior waterproofing solutions?

Exterior crawl space waterproofing is applied on the outside of the foundation walls, creating a barrier to prevent water from entering the space through the foundation. Conversely, interior solutions focus on managing water that has already penetrated the crawlspace through drainage systems, sump pumps, and vapor barriers. This proactive approach is especially recommended for new construction homes.


It’s crucial to note that determining the most suitable waterproofing solution requires professional expertise. This is not a DIY or handyman project for long-term repair. Consulting with a certified professional engineer or foundation specialist is highly recommended. Their insight can provide a tailored solution based on the specific challenges faced, ensuring effective and lasting water management.

How long does the waterproofing process typically take, and what's the expected duration of effectiveness?

The duration of the process can vary based on the project’s size and the property’s specific needs. Typically, it involves excavation, application of the waterproofing membrane, drainage system, and restoration. LUX Foundation Solutions aims to create long-lasting effects with its products designed to be highly durable. The longevity of effectiveness largely depends on factors such as maintenance, environmental conditions, and the quality of the initial application.

What immediate steps should I take if I notice water pooling in my crawl space, and how soon should I seek interior waterproofing services?

If you observe water pooling in your crawlspace, taking immediate action is crucial to prevent further damage. Start by removing any standing water using a temporary pump if able. Identify and address the source of the water, checking for plumbing leaks or drainage issues. It’s advisable to promptly contact LUX’s professional waterproofing to assess the extent of the problem and provide a tailored solution. 


Time is of the essence to mitigate potential structural damage and mold growth. Our team is committed to swift response times, ensuring your crawlspace is promptly secured and waterproofed to safeguard your property. Don’t hesitate to reach out for a thorough evaluation and timely intervention.

Does crawl space waterproofing increase property value?

Absolutely. It can significantly increase the value of your home and serve as an attractive selling point. A properly waterproofed crawlspace provides multiple benefits, such as preventing structural damage, mitigating moisture-related issues, and ensuring a healthier living environment. Potential buyers are often attracted to properties with proactive measures in place to protect against water intrusion, as it indicates a well-maintained and cared-for home. 


A waterproofed crawl space can boost the overall appeal of your property, potentially increasing its market value and differentiating it from other listings. It demonstrates to potential buyers that the property is safeguarded against issues that could arise from moisture infiltration, which can be a compelling factor in their decision-making process.

Can I perform basic interior waterproofing tasks in the crawl space, or is professional assistance necessary?

While basic maintenance tasks can be handled by homeowners, interior crawlspace waterproofing often requires professional expertise to ensure thorough and lasting results. Correctly diagnosing the root causes of moisture issues and implementing effective solutions demands technical knowledge and experience. Our professional team is equipped with the skills and specialized tools needed to address these challenges comprehensively. 


However, we understand the importance of empowering homeowners with preventive measures. We recommend routine inspections, keeping the crawlspace well-ventilated, and promptly addressing any visible signs of water intrusion. For a comprehensive and lasting solution, consulting with our experts ensures a tailored approach to your specific needs, providing peace of mind and protecting your property effectively.

How much does exterior crawl space waterproofing cost?

The cost of exterior crawl space waterproofing can vary significantly based on several factors. On average, the investment can range from $2000 to $15000+, depending on the specific requirements of the project. Ranging from small crack repairs all the way to full foundation dig-outs.

I have concerns about the potential for radon gas in my crawl space. Can interior waterproofing help mitigate radon infiltration?

Yes, it can contribute to mitigating radon gas infiltration in your crawlspace. Radon is a radioactive gas that can enter homes through the soil, and waterproofing measures can help create a sealed and controlled environment. Encapsulation and interior waterproofing systems effectively prevent radon from seeping through the soil and into your home. 


Additionally, addressing any cracks or gaps in the foundation walls during the process further reduces the potential entry points for radon. By combining waterproofing strategies with radon mitigation measures, you can enhance the overall safety of your crawlspace and minimize the risk of radon gas infiltration.

My crawl space has vents. Should these be sealed or modified as part of the interior waterproofing process?

The presence of vents in your crawlspace is a common factor to consider in the interior waterproofing process. While traditional wisdom advocates for vented crawlspaces, modern best practices often lean towards sealing or modifying these vents. Closing crawl space vents help control moisture by preventing outside air and humidity from entering, especially in climates with high humidity levels. 


At LUX, we conduct a comprehensive assessment to determine the most suitable approach for your specific situation. Our expert team may recommend closing crawl space vents, installing a vapor barrier, or implementing a conditioned crawlspace system to optimize moisture control. Trust us to tailor our solutions to your crawlspace’s unique needs, ensuring effective and lasting results.

We Serve the Following Areas

We are proud to provide our crawl space encapsulation service in Northern Virginia, West Virginia, North Central Virginia, Shenandoah Valley, and surrounding areas.



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