Keep Your Crawl Space Dry, Safe, Healthy, and Energy-Efficient

Crawl space insulation protects your space against moisture, reduces energy costs, and enhances indoor air quality. The professionals at the LUX team are here to help your Northern Virginia home be energy-efficient by ensuring your thermal insulation will be installed correctly.

What Is Crawl Space Insulation?

LUX Pro Select Polyiso Insulation Board in crawl space insulation in Berryville, VA for effective air and moisture barrier.

Crawl space insulation involves strategically insulating the walls and floor of your crawlspace to seal out moisture, reduce energy loss, and improve indoor air quality. This vital service protects against common problems such as drafts, cold floors, mold, mildew, and pest infestations while also ensuring a more comfortable and energy-efficient living space.


There are 2 types of crawl space insulation LUX is using. 


Regular fiberglass or partially upgraded moisture-resistant rock wool is used to repair and replace batt-type insulation. 

For an upgrade to a more effective air and moisture barrier in your crawl space foundation walls, our team is using LUX Pro Select Polyiso Insulation Board, a waterproof, closed-cell rigid foam board insulation.

Why is Crawl Space Insulation Necessary?

Proper insulating of crawlspace is essential to maintain a healthy, comfortable, and energy-efficient home environment. A properly insulated crawl space not only gives you peace of mind but can bring long-term cost savings in energy costs and improve home comfort. Without it, your crawlspace can be drafty, causing higher energy bills and decreased comfort.


A properly insulated crawl space offers numerous benefits, including:

Fiberglass insulation (Good)

An image of a tightly woven Fiberglass insulation, a good type of product for crawl space insulation in Gainesville, VA.

Mineral wool  (Better)

An image of a dense and fibrous woven Mineral Wool, a better product for crawl space insulation in Marshall, VA.

For Rigid Foam Insulation (Best)

An image of solid and dense structure of the rigid foam, the best type of product for crawl space insulation in Warrenton, VA.

What Type of Insulation for Crawl Space is Good?

The best insulation option for your crawlspace will vary depending on the condition of your existing insulation and any underlying issues, such as moisture, pest damage, water leaks, or worn-out. 


At LUX, we recommend the LUX Pro Select Polyiso Insulation Board as the preferred insulation for crawl spaces due to its exceptional features and performance. Proper insulation is important for maintaining energy efficiency and preventing moisture-related issues in your home. 


Our crawl space insulation stands out as an excellent choice, known for its ability to withstand high temperatures, resist moisture, and contribute to an environmentally conscious approach. 


Below, let’s explore the distinctive features that make LUX Pro Select Polyiso Insulation Board an ideal solution for insulating your crawl space: 

High-Temperature Tolerance

With thermoset material, polyiso is high-temperature resistant. This capability makes it a highly suitable choice for applications where heat resistance is crucial. Unlike some other insulation materials that might melt or deform under high heat or flame exposure, ours remains structurally sound under fire rating standards.  Even when exposed to flame, it chars rather than melting, providing a crucial safety advantage.

Superior Thermal Performance

The LUX Pro Select Polyiso Insulation Board stands out among rigid insulation options due to its impressive thermal efficiency. We achieve an R-value of R- 6.5 per inch, a crucial insulation metric, especially in spaces with limited space.  This high R-value indicates exceptional insulating capability, reducing heat transfer and energy loss, ultimately leading to more energy-efficient homes, resulting in improved cost savings on your utility bill, allowing us to meet and often exceed the required R-13 code requirement for crawlspace foundation walls.


The hydrophobic core of the rigid foam board insulation makes it exceptionally water-resistant compared to other rigid foam insulation products available in the market. The core's water-resistant properties, combined with facers covering both sides of the insulation board, significantly enhance its ability to repel moisture.  Its resistance to moisture helps prevent moisture seepage and mold growth along with encapsulation. With less than 1% volume water absorption and a water vapor permeance of less than 1.5 perms, it offers exceptional protection against moisture. This feature is vital for maintaining structural integrity and reducing the risks of mold growth and structural damage often associated with water intrusion.

Environmentally Friendly

It is a sustainable choice as it's CFC- and HCFC-free, with zero ozone depletion and negligible global warming potential. This aligns with environmentally conscious building standards and initiatives focused on reducing environmental impact.

Integrated Air Barrier

An integrated air barrier effectively minimizes air leakage in your crawlspace, contributing to improved energy efficiency in your home. This feature positively impacts HERS (Home Energy Rating System) ratings, reflecting higher energy efficiency.

Switching for a comprehensive upgrade to the LUX Pro Select Polyiso Insulation Board is ideal for uniform insulation and maximum comfort, especially beneficial if you have family members sensitive to colder environments. 


At LUX Foundation Solutions, we emphasize the importance of proper insulation and recommend encapsulation. This dual approach effectively combats mold and moisture and ensures a consistently comfortable home environment throughout the year.

Let's Work Together

Why Choose LUX Crawl Space Insulation?

The LUX team expertly installing LUX Pro Select Polyiso Insulation Board for crawl space insulation in White Post, VA

Schedule Your Free Crawl Space Insulation Repair Estimate Today

If you suspect that you may have a crawl space insulation problem, contact us today to schedule your free estimate. We have over 50 years of combined experience dealing with crawlspaces, and we are dedicated to providing our clients with the best crawl space repair service in Northern Virginia, West Virginia, North Central Virginia, Shenandoah Valley, and surrounding areas. 


Don’t let another season go by with a damaged insulated crawlspace. Contact us now at 540-508-8587 or fill out the form for a free estimate on your crawl space insulation repair project. At LUX Foundation Solutions, your comfort, peace of mind,  and savings are our priority.

Request a free Estimate


Should I remove the old insulation before adding a new one?

Removing old insulation before adding new typically ensures a better installation outcome. However, it’s essential to assess the condition of the existing insulation to determine if removal is necessary. If, after inspection, it confirms that it is damaged, wet, or deteriorated, our team will recommend removing it to prevent issues from persisting or reoccurring, ensuring a more effective and long-lasting solution.


If you have damaged, wet, or deteriorated batt insulation, we often perform encapsulation with additional measures to prevent recurring damage, ensuring long-lasting effectiveness. In cases where batt insulation may not offer comprehensive coverage or if you have members who are more sensitive to colder temperatures (often women) and experience continued discomfort, we recommend upgrading to rigid foam board insulation for uniform coverage, enhanced comfort, and maximum benefits.

After heavy rainfall, I've noticed water pooling in my crawl space. How does this affect the insulation, and what should I do?

Water pooling in the crawlspace after heavy rainfall can significantly affect insulation. It can lead to damage, reducing its effectiveness and potentially causing mold or mildew growth. In such situations, at LUX, we recommend addressing the water pooling immediately, repairing any insulation damage, and considering encapsulation or waterproofing solutions to prevent further issues and ensure a dry, properly insulated crawlspace.

I've encountered pests in my crawl space. How do I prevent them from damaging the insulation, and what steps should I take to address this?

Encountering pests in the crawlspace can lead to potential damage to the insulation. To prevent this, sealing entry points and ensuring a pest-free environment is crucial. Addressing the pest issue involves:

  • Removing the pests.
  • Repairing any damage.
  • Implementing pest control measures to prevent their return.
During a recent home inspection, the inspector mentioned issues with the crawl space insulation. What are the potential risks if I don't address this?

If the issues with the crawl space insulation highlighted during the home inspection are left unaddressed, it can lead to several risks. These risks may include compromised energy efficiency, potential mold growth, increased moisture levels, and decreased indoor air quality, impacting both the home’s structural integrity and the occupants’ health. 


Addressing these issues promptly is crucial to avoid further damage and maintain a healthy and energy-efficient home environment.

I live in an area prone to extreme temperatures. How can I ensure my crawl space insulation is adequate for these conditions?

Living in an area in Virginia prone to extreme temperatures requires ensuring that your crawl space insulation is well-suited for such conditions. Utilizing high-quality insulation materials and implementing encapsulation can help maintain stable temperatures, preventing heat loss in winters and heat gain in summers. 


Consult with professionals at LUX, and we will assess and upgrade your insulation with encapsulation to ensure it meets the necessary standards for extreme temperature variations, providing a more comfortable and energy-efficient environment within your home.

I'm unsure if my crawl space insulation is outdated or damaged. What are the visible signs I should look for to confirm this?

To determine if your crawl space insulation is outdated or damaged, look for visible signs such as moisture stains, mold growth, a musty odor, sagging insulation, fluctuations in temperature, sudden increases in energy bills, pest invasions, or noticeable drafts. These indicators can signal potential issues that need to address any outdated or damaged insulation in your crawlspace immediately.

I have bat insulation that needs to be replaced. Is it advisable to encapsulate the crawl space before installing new insulation?

When replacing batt insulation, encapsulating the crawl space with all necessary steps is highly recommended to prevent insulation from falling down and getting damaged again. Batt insulation may not always provide optimal coverage, and some homeowners, particularly those more sensitive to colder temperatures, may still experience discomfort, especially in areas like floors. 


At LUX, we recommend considering rigid insulation for uniform coverage as an upgrade, maximizing comfort and overall benefits. Rigid insulation offers improved thermal performance and helps create a safer and more comfortable living environment.

Will insulating my crawl space affect the resale value of my home?

Insulating your crawl space can positively impact the resale value of your home. A well-insulated crawlspace improves energy efficiency, creating a more comfortable living environment and potentially reducing utility costs for future homeowners. Additionally, it helps protect against moisture-related issues, such as mold and wood rot, enhancing the overall structural integrity of your home. 


Potential buyers often appreciate energy-efficient features, and a properly insulated crawlspace can be considered a valuable investment. For the best results, consult with professionals at LUX to guide you in choosing the right insulation solution to maximize comfort and resale value.

How does crawl space insulation impact indoor air quality?

Crawl space insulation plays an important role in impacting indoor air quality. It helps create a barrier against external pollutants, preventing them from infiltrating the living spaces above. By controlling moisture and preventing mold growth, it contributes to a healthier indoor environment, reducing the risk of respiratory issues and allergies associated with mold and damp conditions. 


A well-insulated crawlspace also helps regulate temperature and humidity levels, promoting optimal air quality throughout the home. With guidance from professionals, choosing appropriate insulation materials and methods ensures that the crawlspace contributes positively to indoor air quality, creating a more comfortable and healthy living space.

We Serve the Following Areas

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



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