Why Encapsulate?

Let’s keep it simple. There are two main reasons you encapsulate a crawlspace:
Create a barrier to the effects of outside air temperature and moisture (humidity).
Create a barrier to the upward movement of vapor coming from the ground of the crawlspace.
With those barriers in place a dehumidifier can really do its job of conditioning that crawlspace!

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How do you this?

First – move the insulating envelope to the perimeter walls – not the sub-floor above the crawlspace. Use a product that has superior insulating ability and most important – is an air barrier!

Next – seal off the vapor coming from the ground (before they reach the air of the crawlspace) by installing a Vapor Barrier not a Vapor Retarder. Remember – to be a true vapor barrier the product must have a vapor permeance rating of less than .001! The installation of the Vapor Barrier is critical. If all the seams, edges, etc. are not properly sealed from the ground below – then the install will not be effective.

Final step: Now that the crawlspace has been encapsulated it should be conditioned to maintain a consistent relative humidity (RH). In our area the recommended RH should be maintained at a consistent 45-55%. Always keep in mind that temperature also has an effect on moisture levels.

All this sounds great but what are the products, installation methods, etc. needed to accomplish a true encapsulation?

Our Approach

It can be difficult to recognize the difference between crawlspace encapsulation and insulation. When you choose Complete Insulation, you don’t need to lose sleep trying to work out what you need, as we do all the work for you! Rather than throwing a quick fix at a problem, we investigate its origins to provide you with the best insulation product and service possible. Our local team is knowledgeable, professional, and friendly, offering you competitive prices and a genuine approach.

Call Us Today: (615) 614-8800


It all starts with a thorough onsite inspection:
Call us for a no-cost estimate

At Complete Insulation we understand the importance of the investment you’re about to make, which is why we offer free inspections.

Onsite Inspection

We conduct an onsite inspection to determine exactly the needs of your crawlspace. After this inspection a detailed estimate will be provided (typically within 1-day). After reviewing the estimate – we will discuss the estimate, review any options that may have presented and answer your questions.


If a decision is made to move forward, we will begin the process of setting up your installation schedule. As part of the process – our installation manager will make a pre-installation onsite visit. Check site conditions for the Dehumidifier installation (if that option is selected). This just ensures that the installation will go as smooth as possible.


We have a 2-step installation process
Day 1: Preparation of the Crawlspace

Upon arrival our prep. crew will get right to work. Dependent your exact needs they will do the following:

  1. Remove existing vapor retarder, the fiberglass insulation in the ceiling of the crawlspace. If your crawlspace has the sprayed-on cellulose at the perimeter walls – we will remove that product from the wall and remove it. Any removal we do is disposed of off-site (we take it with us).
  2. We then install work lights. By the way we will leave these in place if you would like to keep them.
  3. Next is the detailed prep. work:
    1. Removal of any debris on the floor of the crawl.
    2. Light rake the floor.
    3. Install sealant at the joint between the foundation wall and the sill plate.
    4. Pre-install the Viper 10ML reinforced poly at the base of the of the foundation wall. This is typically a 2’ wide piece of material. Our spray foam crew will seal this piece to the foundation wall (very important).
    5. Pre-install the pier wraps (if applicable). Again – this a setup step for the spray foam crew who will seal the top of the pier wrap.
  4. Dehumidifier:
    1. If this option is selected, we will perform the install at this time. Get it ready for use after we complete the Day 2 install.

 Remember – any removal we take with us!

Day 2: Install

Next is the spray foam crew.

  1. They will install closed cell sprayfoam at the rim joist, perimeter walls and seal the vapor barrier at the piers.
  2. When applying the closed cell sprayfoam at the foundation walls a 3” termite inspection strip will be left just below the sill plate on the foundation wall.
  3. Next is the final piece of the install. The crew will place the Viper 10ML reinforced poly on the crawlspace floor and tape all seams and joints as required.
  4. The Installation Manager will place the Dehumidifier into operation.

Your Questions Answered

Crawlspace encapsulation is where your crawlspace— the small area underneath your home or building— is sealed to prevent moisture and insects from getting in.

The crawlspace is covered in plastic that is sealed at the seams. We then install a dehumidifier which will keep moisture levels low, reducing the chances of mold, mildew, and that overall musty smell.

Crawlspace encapsulation improves the health of your home or business, increases the air quality, and prevents insect infestations.

In addition to its other benefits, crawlspace encapsulation does increase energy efficiency. This is because it prevents air from outside getting in, meaning less cold and gusty blows in winter and scorching waves of heat in summer.

Yes, we do work directly with homeowners! We also work with general contractors and commercial clients.

With crawl space encapsulation done right, you can expect to have all the surface area in your crawl space covered with high-density reinforced liners which work to limit moisture and humidity. They will prevent pests from working their way into your crawl space and you can also expect improved comfort and lower energy bills at your home or business building since you won’t have to run your HVAC as often to enjoy greater comfort.

Crawlspace Encapsulation from Complete Insulation

If you’re in Murfreesboro, Brentwood, Mt Juliet, Nashville, Columbia, and Franklin, TN and you haven’t had your crawl space encapsulated, make sure to call the experts at Complete Insulation! We are a locally owned business and we work hard to earn your satisfaction and trust with a job that is done flawlessly. We do quality work and we offer free inspections and quotes. When you hire us for your crawl space encapsulation, we’ll have your entire crawl space covered with advanced Viper CS vapor barriers which will ensure that you no longer have to deal with the threat of mold, mildew, pests, radon, moisture build-up, and high humidity. We also will install a quality dehumidifier to ensure your crawl space remains moisture free.

Make Sure Your Crawlspace is Sealed and Safe

When you’re looking for crawl space encapsulation done right, nobody does the job better than Complete Insulation! Give us a call at (615) 614-8800 for a free quote. Our management, staff and install crews have well over two decades of real-world experience. We go above and beyond to ensure the job is done right the first time every time and we work hard to achieve 100%. When you work with us, you can expect improved energy efficiency, better air quality, and greater comfort in your home or business building, so don’t hesitate to reach out to us!

Crawlspace Encapsulation Service, Crawlspace Encapsulation Repair, Crawlspace Encapsulation Replacement & Crawlspace Encapsulation Maintenance Murfreesboro, TN, Brentwood, TN, Mt Juliet, TN, Nashville, TN, Columbia, TN & Franklin, TN

Crawlspace Encapsulation Installation in Murfreesboro, TN | Crawlspace Encapsulation Maintenance Brentwood, TN

Crawlspace Encapsulation Company Near MeCrawlspace Encapsulation Installation ∴ Brentwood, TN ∴ Nashville, TN ∴ Mt Juliet, TN

Your Neighbors Have Good Things To Say
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After calling several insulation companies and leaving messages and getting no responses I called Complete Insulation where a real person answered and assured me that they didn’t do business that way. Jeff Wells responded within a few minutes and was out promptly the next morning to look over our new home.
He was very personable and honest. He submitted an estimate that we felt was very fair. It was only a few days before a friendly and courteous crew was on site to install fiberglass batt in our walls. Jeff even recommended a drywaller who did our whole house. After the drywall was installed another great crew was out promptly to install the blow in insulation in our attic. The whole process was easy and it was a pleasure working with a company that is so responsive and does what they say they will do. I would definitely recommend Complete Insulation to fulfill your insulation needs.

Tim P.

Complete Insulation excelled in every area. Jeff was quick to give an estimate on spray foam and blown insulation. He was extremely kind and impressionable. The day after I accepted their quote, Arnoldo and Mario were at my door ready with blown insulation. They, too, are a great representation of this company. I was impressed with their work and am so thankful they were able to install the insulation before the summer heat rolls in! I definitely recommend this company to anyone looking for insulation.

Savannah W.

The team who came from Murfreesboro, TN to our house in Chattanooga were amazing. We have a very large home. They removed all the old insulation from our three attics, sprayed with a decontaminate and then sprayed all the new insulation. All in one very long day. They were great to work with, came went they said they would, answered all our questions. Had to put the tubes all the way from the attic down to the first floor and out to the truck. They covered all the floors, stairs etc and left the place spotless. We are very pleased and would highly recommend this company.

Lorraine F.

I needed to replace the insulation in my crawlspace. Jeff, at Complete Insulation, helped tremendously by discussing all my options and the pros and cons of each. They offered a competitive price and the installers did a great job. I highly recommend Complete Insulation!

Gerald R.

We can already tell a difference in the “draftiness” of the house and the heat doesn’t seem to run as long even though it has gotten down in the 20’s in the evening. If you have the need for an insulation contractor, I couldn’t recommend Complete Insulation any more highly.

Patrick S.

There aren’t many people like Jeff and Arnaldo in this world who are so passionate about their jobs. Jeff is so knowledgeable about insulation and is just such a nice guy. And the work ethic on Arnaldo is Amazing he moves with speed and efficiency. The before and after is amazing I am really impressed and couldn’t be happier with complete insulation.

Said A.

Bravo. Insulation Complete is Complete Insulation. The 1937 house I purchased, had previous owners, who remodeled a crawl space or attic into a bedroom. The burning sun beating on the roof was excruciating. Jeff Wells, workmanship to spray insulate, was the solution. This action, provided a barrier that was essential for temperature control. Many thanks.

Judith F.

I had a fire in my attic and needed all of the contaminated insulation removed. I am *AMAZED* at how thorough the hard working folks at Complete were. You could almost eat off the floor of the attic. The entire crew was courteous, quick and more than fair with the price. Highly recommend.

Derik H.

This entire experience was wonderful from beginning to end with this company. After they installed the foam the next morning my roommate and I both woke up and could immediately feel the difference in the main living area. Jeff explained every detail of how the process worked at point of sale and was patient with all of my questions after the fact. Freddy and his brother Henry were kind, professional, and friendly during the installation process. I couldn’t have asked for a better team for our first step in renovating the attic!

McKenzie H.

We had barrier and insullation replaced in the crawl space and the experience was great. Jeff was very informative and polite, couldn’t have asked for a better person to work with. The installation guys were great and it was complete in one day. The floors are warmer. The morning after the instsallation when I woke I could definately tell a difference in the air quality.

Carol R.

This company was professional from Day 1! Their bid was the lowest of all I gathered. Jeff Wells, their salesman, was very helpful! The installation crew arrived on time, was efficient, and kept my home clean. I would definitely recommend this company to anyone needing new insulation!

Ted S.

I was building my own custom home and “interviewed” several spray foam insulators. It was clear Moody Ozier had a deeper knowledge of air sealing, R-value, and building codes than anyone else, so I went with Complete Insulation. He really took an interest in my hyper efficient build and came up with additional engineering ideas to further improve the efficiency of my home. I cannot say enough good things about Moody and Id tell anyone he’s trustworthy, efficient, and knows the insulation and air sealing business to great depth. Jose, Fredy, and their crews showed up on time, in uniforms, with clean trucks and did a wonderful job on instal AND cleanup. They were incredibly professional at every step and it was clear they had years of experience. I recommend Complete Insulation to anyone with encapsulation and/or insulation needs whether you are new construction, retro fit, investor, or otherwise.

Chad K.
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