Insulation Contractor Serving Nashville and Surrounding Communities

Home Insulation Services
In The South Nashville Suburbs

The wide range of temperatures that we experience here in Middle Tennessee makes your home’s insulation ever so important. Insulation helps to maintain the comfort of your home while minimizing monthly utility costs. 

Whether it’s an older home or a new build, Legacy Exteriors can help you to ensure that your home is properly insulated.

Our Insulation Services

Spray Foam Insulation

  • Open Cell Spray Foam
  • Closed Cell Spray Foam
  • Attics, Walls, and more…. 
Photo of insulated walls and ceiling


  • Blown Fiberglass Insulation
  • Added Insulation Due To Settling
  • Attics, Walls, and more….

Why Insulate Your Home?

Insulation provides your attic and walls a much needed barrier that helps regulate the inside temperature of your home. In the summertime, insulation stops heat from getting into your home, while in the wintertime insulation stops heat from escaping. Preventing the travel of heat in and out of your home comes with many benefits, including:

  • Increased comfort from more consistent room to room temperatures
  • Lower utility costs from less furnace and air conditioning usage
  • Lower CO2 emissions from less heating/cooling (aka: reduced carbon footprint)
  • Improved sound dampening
  • Increased property value
  • Possible tax credits for energy efficiency improvements 

Some Nashville area homeowners will look at hiring an insulation company from the value & savings perspective, i.e. what is my savings or return on investment? Meanwhile, others see better quality of life as the motivating factor in deciding when to replace their home’s insulation. In both cases, proper home insulation is a worthwhile investment. 

So, we know that insulating our home is a good thing and a good investment. But how much insulation do you need?

What is R-Value?

The standard measure used when measuring insulation’s performance is R-Value, which is a thermal resistance rating. The higher the R-value the less heat is transferred. Determining how much insulation your home will need depends on the climate in your region. 

The counties that we serve, Willimson, Davidson, Maury all fall in climate zone 4, according to the International Energy Conservation Code (IECC). The recommendation for our climate is to have insulation with an R-value of 13 in wood framed walls and 38 in ceilings. 

The types of insulation offered by Legacy Exteriors will all get you to those recommended R-values. But what type of insulation is right for your home?

Types of Attic and Wall Insulation

The three most common types of insulation are spray foam, blown-in, and batted or rolled insulation. The best insulation for your attic will depend on a number of factors, including:

  • When the insulation is installed (during construction or retro-fit after construction)
  • What part of your home needs insulation (attic, walls, or both)
  • Where you live and the climate there
  • Personal health and/or environmental concerns

Each of the three common types of insulation has its own pros and cons, some more impactful to homes here in Tennessee than others, so we’ll unpack them for you individually.

Photo of insulation over plywood
Spray foam insulation being installed in stud wall
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Spray Foam Insulation

Spray foam insulation comes in two types, open-cell and closed-cell. They are a little different from one another. describes them by saying, “with closed-cell foam, the high-density cells are closed and filled with a gas that helps the foam expand to fill the spaces around it. Open-cell foam cells are not as dense and are filled with air, which gives the insulation a spongy texture…”. 

Since closed-cell foam is more dense and uses a chemical gas to help maintain heat travel resistance, it tends to provide a little better R-value. However, open-cell insulation is more flexible so it is able to reach more places. Open-cell is less dense, meaning less material is needed to fill the same amount of space, so the material cost is lower. 

These days all spray foam materials are considered fire resistant and they are non-HCFC, so they don’t hurt the environment.

Pros and Cons of Spray Foam Insulation

Key benefits of spray foam insulation are numerous, and they include: 

  • Good R-value – the resistance to heat transfer provided by spray foam is comparable to that of the other common forms of insulation
  • Superior Air Sealing – spray foam expands approximately 50 to 70 times its volume upon application, allowing it to reach and fill gaps that other forms of insulation cannot
  • Life expectancy – when properly installed, spray foam insulation can last more than 80 years

While the benefits of foam insulation are quite appealing, it is important to note that there are a few drawbacks.

  • Spray foam insulation cost is higher than conventional blown-in insulation
  • Installing spray foam is not a do-it-yourself job, special equipment and training is necessary in order to achieve a proper application that meets the appropriate R-value
  • Potential health risks if you are exposed to the chemicals before they fully cure

If you are more of a traditionalist or you’re working with a tight budget, then you might pass on spray foam and consider the blown-in insulation option.

Blown-In Insulation

Loose-fill fiberglass insulation is made from melted glass that is whipped into fibers. These days it typically contains about 40% to 60% recycled glass. A special blowing machine is required in order to install it, whether in an attic or existing walls, so professional installation is highly recommended. 

Despite its reputation as the economy option, blown-in insulation can offer many benefits, including:

  • Blown-in insulation cost is typically lower compared to spray foam insulation cost
  • Can be layered for additional protection
  • Considered fire resistant
  • Non-toxic and repels mildew

Of course, as with anything else there are a few drawbacks, too:

  • Messy during installation and when wet
  • Can become heavy for ceilings causing sag
  • Not as air sealing as foam, so more chance of drafts and insect intrusion
  • Years from now, settling may cause need for additional applications and/or eventual replacement

Most blown-in insulation contractors will attest that many homeowners still choose blown-in fiberglass insulation. It’s what we grew up with, and it still does the job today. But, how should you go about choosing insulation for your home?

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Photo of blown fiberglass attic insulation
Batted attic insulation
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Batted or Rolled Insulation

Typically installed during the building of a home, batt insulation can be a convenient choice for home insulation. It offers a reasonable balance between cost and performance. 

Insulation Batts often come in rolls, but these days they also come precut to industry standard sizes. The most material for batt insulation is fiberglass. The benefits of batt or rolled insulation include:

  • Different thicknesses to meet your exact R-value needs
  • Guaranteed insulating capabilities over time
  • Fire resistant
  • Sound absorbing
  • Made mostly from recycled materials

Those all sound great, you say, but what are the drawbacks?

  • Lower R-value per square inch than spray foam
  • Less air sealing capability
  • Cannot be installed in existing walls

If your home is in the construction phase, then batt insulation could be an option to consider. However, if you are looking for insulation replacement then you will want to choose between spray foam and blown-in insulation.

Choosing Insulation for Your Home

Here in Middle Tennessee, we all know that temperature is not the only factor that impacts the comfort of your home. We have heat and humidity, high winds and heavy rains, insects and critters, and neighbors with loud music. 

When deciding what type of insulation to choose, you want to consider the full range of pros and cons to each. We can help you to choose wisely the best type of insulation for your attic and walls, by weighing the following considerations:

  • Thermal performance – will this material provide the R-value needed in the space allowed?
  • Air Sealing – up to 40% of a home’s energy loss is due to air filtration, so will we be airtight?
  • Moisture management – does the area needing insulation need to be moisture sealed?
  • Noise suppression – should we worry about minimizing sound travel through the walls and/or ceiling?

Don’t try to go it yourself in making such an important decision. Let the experts at Legacy Exteriors provide you with a free attic inspection and share with you what we would choose if it was our home.

When to Replace Your Insulation

Deciding to replace your home’s insulation is seldom a spur of the moment decision. So, how long does attic insulation last and when is the right time to consider replacing your insulation?

For homes with blown insulation, attic insulation replacement should ideally be done before you reach year 15. Further, if you are noticing temperature fluctuations indoors or if your heating and air conditioning bills are increasing, you may want to consider bolstering your home’s insulation. 

Attic insulation replacement begins with removal of old insulation, which is  definitely a job for professionals. Typically, special equipment is needed when removing blown-in insulation. And many Tennessee towns and counties require special, environmentally safe, disposal of old insulation. 

If you are far short of the 15 year mark, but your insulation is not effectively doing what it’s supposed to be doing, you might look at simply adding insulation to your attic and walls. Legacy Exteriors will be glad to provide you with a free inspection of your home’s insulation, and if the time is right a free estimate, too.

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Choosing Your Insulation Company

Choosing your insulation contractor comes down to just a few factors. Here is what most folks consider:

  • Price – You might find that other attic insulation contractors are asking for an arm and a leg to replace your home insulation. At Legacy Exteriors, we never price gouge. Fair and upfront pricing is our policy. 
  • Proximity – You want to choose a company that is located in Middle Tennessee. Issues seldom arise after insulation installations. But if they do, you want to have your installer local.  
  • Experience – It’s important to note that your attic and roof require ventilation. If your contractor is also your “handyman”, then likely he or she is not doing insulation projects very frequently and may not know how to maintain ventilation. You can avoid errors and oversights by working with the qualified insulation professionals at Legacy Exteriors.
  • Client Reviews – Don’t just take our word for it. Look at what our customers have to say about us!

Legacy Exteriors is your best choice for a Nashville insulation company. And, of course our inspections and the estimates are always FREE!

Financing For Home Insulation Projects

At Legacy Exteriors, we understand that purchasing new insulation for your home can have a heavy impact on your finances and the upfront costs can be a burden. That’s why we’ve partnered with one of the most respected home improvement financing companies in the industry, Hearth.

We have chosen Hearth as our partner because they make it easy for you to find monthly payment options for your project, with:

    • Loan amounts up to $100,000
    • Affordable monthly payment options
    • Funding within 1-3 days
    • No prepayment penalties
    • No home equity required

With flexible terms and some of the industry’s lowest rates, Hearth can help you to change that big upfront cost into comfortable monthly payments. Exploring your payment options, and even getting pre-qualified will not impact your credit score