Licensed & Insured. Crawl space Encapsulation and Mold Remediation

How Much Does Crawl Space Encapsulation Cost in Nashville, TN?

How Much Does Crawl Space Encapsulation Cost in Nashville

Here’s the hard truth about crawl space encapsulation cost:

There are WAY too many homeowners today that think, “I’ll deal with it when I have to.” They say, “If my home doesn’t smell musty or if there isn’t visible mold growth, why should I worry?”.

If only it were that simple. If you’re serious about maintaining a healthy living environment and increasing your property value, understanding crawl space encapsulation cost is essential.

It needs to be approached systematically. Otherwise, you’re taking the “burying your head in the sand” approach to home maintenance: ignoring potential problems until they become major headaches.

Table Of Contents:

Understanding Crawlspace Encapsulation

Crawlspace encapsulation is your secret weapon against moisture-related issues in your home or commercial building.  It’s a technique that seals off the crawlspace, creating an impenetrable barrier against unwanted dampness.

By using encapsulation to control the humidity in your crawlspace, you can help increase energy efficiency by retaining warmth during winter and promoting air circulation during summer.

The Real Purpose Behind Crawlspace Encapsulation

Let’s cut to the chase: The primary aim of crawlspace encapsulation is to keep moisture under control.  When left unchecked, dampness can lead to all sorts of problems, including mold growth, wood rots, and even pest infestations making themselves at home without you knowing.

Mold loves moist environments, and once settled, it will spread like wildfire throughout your property if not dealt with promptly. This fungus has no respect for structural integrity or health – prolonged exposure could result in respiratory conditions such as asthma or allergies becoming part of daily life.

CDC warns that severe lung infections are possible, especially among those with weak immune systems, due to long-term contact with mold spores floating in the air.

The True Importance of Crawlspace Encapsulation Revealed

You might be surprised to learn that the benefits of crawlspace encapsulation extend far beyond mere prevention of mold development.

One significant advantage is improved energy efficiency, which is achieved through enhanced insulation provided by the sealed-off crawlspace, resisting external temperature fluctuations.

According to the Department of Energy, homeowners can save up to 15% on heating and cooling costs annually, thanks to proper insulating measures.

Moreover, maintaining an ideal humidity level helps preserve the foundation, reducing the risk of costly repairs in the future caused by water damage, termite invasion, and other pests attracted to damp spaces.

Lastly, it contributes to overall indoor comfort by eliminating musty odors often associated with unsealed crawlspaces and enhancing the quality of the breathable atmosphere inside the premises.


Key Takeaway: Crawlspace encapsulation is more than just a moisture-buster; it’s an energy-saving, structure-preserving, health-protecting power move. Not only does it fend off mold and pests, but it also boosts insulation for year-round comfort while keeping your repair bills at bay. It’s the unsung hero of home maintenance.

Factors Influencing the Cost of Crawlspace Encapsulation

The cost to encapsulate your crawlspace is influenced by a variety of factors.  Let’s explore these in detail.

Factors Influencing Crawl Space Encapsulation Cost

Size and Condition of Your Crawlspace

Larger crawlspaces naturally require more materials, which directly impacts the total price. If you have an expansive or multi-level crawlspace, expect higher costs due to increased material needs.

Your Crawlspace’s Current State Also Counts

If there are pre-existing issues, such as mold growth or structural damage, that need addressing before encapsulation can take place, this will add to your average crawl space encapsulation cost.

The additional repair costs could range from $2000 up to $7000 depending on severity.

Labor Costs – A Significant Chunk Of Your Budget

The labor involved constitutes 50%-70% of total encapsulation expenses. It includes tasks like:

  • Cleaning out debris from the crawlspace prior to initiating any work.
  • Installing vapor barriers along floor walls and ceilings.
  • Sealing vents, access doors, and other openings.
  • Insulating surfaces where needed based on the specific needs and conditions of each individual job scenario.

Labor charges vary greatly depending on the complexity involved and the nature and extent of the required services, making them range anywhere between $750-$10,500 on average.

Decoding Crawl Space Encapsulation Cost for Homeowners

Uncover what influences crawl space encapsulation cost. Learn about labor, material costs, and more to budget for this vital home project.

Unpacking the Material Costs for Crawlspace Encapsulation

The cost of materials is a significant factor in determining your crawl space encapsulation costs. The cost of materials can vary depending on the quality, type, and specific needs of your crawlspace.

Digging into Vapor Barrier and Tape Prices

A key player in any encapsulation project is undoubtedly the vapor barrier.

This material serves as an effective shield against moisture permeating from your ground or walls into your crawlspace. The level of thickness you opt for will largely hinge on how much control over moisture you require.

If we’re talking about thinner barriers (6 mil), they generally come with lower price tags but might not provide sufficient protection if severe dampness plagues your crawlspace.

On the flip side, thicker options (20 mil) deliver superior resistance but at steeper prices. In terms of average vapor barrier pricing, it ranges between $0.05 to $0.60 per square foot, depending upon their thickness level.

Besides this, special tape designed specifically for sealing seams among sheets also adds to the overall material cost, around $20 per roll approximately.

Vent Sealing Expenses: A Closer Look

An integral step towards achieving efficient encapsulation involves closing off vents since it stops outdoor air-carrying humidity and temperature fluctuations from entering the crawlspace, hence affecting indoor climate stability negatively.

Consequently, leading to higher energy bills throughout the year, especially during extreme weather seasons when HVAC systems work overtime to maintain comfort levels inside home areas above unconditioned spaces like basements and garages, where most homes have them installed too often.

Sealing vents typically fall within the range of $10-$22 for each vent; however, it could be slightly more if there are a larger number than usual or particularly difficult access due to structural obstacles present within itself. An additional charge applies when installing new vents after closure.


Key Takeaway: 

Understanding the nuts and bolts of crawl space encapsulation costs is crucial for homeowners. Material costs, including vapor barriers and tape prices, significantly influence the overall budget. Don’t forget to factor in vent sealing expenses as well – they can sneak up on you.

Process of Crawlspace Encapsulation

The crawlspace encapsulation is a multi-tiered process that, when executed meticulously, can provide lasting benefits for your property. Here’s how this procedure unfolds:

Evaluating the Current State

An initial inspection forms the foundation of any successful crawlspace encapsulation project. This task should be undertaken by an experienced encapsulation company that will gauge the condition of your crawlspace prior to initiating work.

This preliminary assessment involves identifying signs such as mold growth, pest infestation, or structural damage that may need rectification before proceeding with encapsulation. Bear in mind that these repairs might add to your overall costs.

Cleanliness Precedes Installation

A thorough cleanup is vital for preparing the area for effective crawlspace sealing and vapor barrier installation. This includes getting rid of old insulation materials, debris from pests, or standing water if there are drainage issues within your crawlspace.

Leaving these elements untreated could compromise subsequent steps and affect the longevity of the solution. Consequently, it is critical to make sure the area is fully clean not only for sanitary reasons but also so that the eventual outcome will last.

Drying and Repairing Damage

Your contractor then shifts focus towards drying out and repairing damages found during the inspection phase. Fixing leaks causing dampness and installing sump pumps are necessary parts of the process. 

If moisture levels remain high after all repair works, they may recommend dehumidifiers installed at an additional cost.

Investing in a good quality dehumidifier helps maintain an optimal humidity level, preventing future problems related to excessive moisture buildup and thereby contributing to a healthier living environment inside the home. 

Vapor Barrier Application

In the next step, a heavy-duty polyethylene vapor barrier is laid down across exposed surfaces, including both the floor and walls, acting as a shield against ground moisture rising up into the building structure. 

The thickness chosen depends upon the severity of the conditions faced, ranging anywhere between 6 mil (0.05 per sq ft) to 20 mil (0.60 per sq ft).

Process of Crawlspace Encapsulation

Seal All Gaps

Sealing all gaps, vents, and openings that lead to the outside. This is a crucial step as it prevents humid air from entering your crawl space, which can cause mold growth and structural damage over time.

To further protect your crawl space from external elements, installing airtight doors or access panels is recommended. These features not only help maintain the integrity of your encapsulated area but also provide easy access for maintenance checks and potential repairs in the future.

Insulate the Walls

This process involves applying rigid foam board insulation or spray foam insulation to your crawl space walls. The primary aim here is to keep the temperature within this area stable, thereby reducing energy costs and preventing pipes from freezing during winter.

Install a Dehumidifier

To maintain the right conditions in your crawl space, encapsulation is not enough. You also need to control humidity levels. This is where installing a crawl space-specific dehumidifier comes into play.

A high level of humidity in your crawl space can lead to mold growth and other problems that could potentially damage your property’s foundation or cause health issues for those living within it. A dehumidifier will automatically maintain the desired humidity level, preventing these potential issues from occurring.

Final Check: Ensuring a Successful Crawlspace Encapsulation

Once your crawl space encapsulation is complete, it’s essential to carry out a final check. This step ensures that all seals are tight and the dehumidifier functions correctly.

Key Takeaway: 

Understanding the cost of crawlspace encapsulation requires grasping the process itself. It begins with a thorough inspection, followed by cleanup and repair work. The application of a vapor barrier is then carried out to prevent moisture issues. Each step can impact your overall expenses, so plan accordingly.

FAQs in Relation to Crawl Space Encapsulation Cost

Is crawl space encapsulation worth it?

Crawl space encapsulation is beneficial as it controls moisture, prevents mold growth, and improves energy efficiency in your home.

What are the negatives of crawl space encapsulation?

The main downside is the cost. It can be expensive due to labor costs, material expenses, and potential repairs needed before encapsulating.

Is sealing a crawl space a good idea?

Yes. Sealing a crawl space helps prevent moisture intrusion, which can lead to structural damage and poor indoor air quality.

Do I need a dehumidifier in my encapsulated crawl space?

A dehumidifier may be necessary if you live in an area with high humidity levels to maintain optimal conditions within the sealed crawlspace.

Crawlspace Encapsulation Service

Estimating the Cost of Crawl Space Encapsulation in Nashville

Understanding crawl space encapsulation is the first step to a healthier home. The cost of this crucial project hinges on factors like your crawl space’s size and condition, labor expenses, permit fees, and material costs.

Larger or more damaged spaces can push up prices as they require additional materials and work. Labor forms a significant chunk of the total cost – anywhere between 50% to 70%, depending on the complexity involved.

Permits are another essential consideration; these typically range from $100-$250, including an inspection fee. The type of materials used also plays into overall costs, with vapor barriers, vent seals, and insulation options, each carrying different price tags.

Ready for a complete transformation?

At Crawlspace Makeovers, we offer professional residential and commercial crawlspace encapsulation services that not only control moisture but prevent mold growth too! Improve energy efficiency while protecting your property by investing in our top-tier services. Contact us today! 

Picture of Greg Lewis

Greg Lewis

Greg Lewis is the founder and CEO of Tier Restoration, a company dedicated to restoring the indoor environment of homes and businesses experiencing water damage, smoke damage, or mold contamination.

Greg has spent most of his life working in this industry in Nashville, Tennessee, in the 1970s, working in his father’s commercial cleaning business, in the 1980s and 1990s as a partner with his father in the Sears Carpet and Duct Cleaning franchise, then on his own since 2000.

Greg played his trumpet at Overton High School and the University of Tennessee, Chattanooga, and you can still find him playing throughout the Greater Nashville, Tennessee area.