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Top Quality Residential Insulation in Arlington

High quality insulation is key to energy efficiency, indoor air quality, and keeping your building comfortable the whole year-round. As Arlington's trusted specialists in residential insulation and commercial insulation installation, Southland Insulators provides the superior insulation products and services you need to ensure your home or commercial building is protected.

From new home insulation installation and existing insulation upgrades to commercial building insulation repair and replacement, our expert insulation team provides unmatched quality and service on any project. The largest independent insulation contractor in Northern Virginia for more than 30 years, we deliver quality insulation products and services on time and within budget.

With a staff of more than 60 skilled insulation installers and a vast inventory of insulation products, we have the expertise and resources needed to meet your unique insulation project. We outpace and outperform our competitors and provide the service and value our customers deserve.

Insulation Expertise You Can Count On


Whether you're building a new home or need an insulation upgrade in an existing commercial structure, our expert insulation team can help. We understand how important it is to get the job done on time and on budget. Our experienced insulation team goes to work quickly to ensure your project is completed to your satisfaction.

Residential Insulation
From installing insulation in your new Arlington home to upgrading an existing home's insulation, we have the products and expertise to tackle your residential project. We offer a variety of top quality residential insulation options including fiberglass, cellulose, rigid foam board, spray foam insulation, mineral wool and more. We have the skill and expertise to complete your next home insulation installation, repair or replacement project.

Commercial Insulation
Our commercial insulation specialists offer a wide range of products and techniques to meet the needs of any commercial project. From rigid board insulation, spray foam insulation, and the Thermal Barrier Blanket (TBB) system to flash and batt, RetroShield and more, we're equipped to handle and complete your insulation installation on time and on budget. We have extensive commercial insulation experience and will work with you to determine the products and services that suit your unique project.

Arlington's Premier Insulation Contractor


Saving money is essential for any residential or commercial project, regardless of its size or scope. By providing high quality insulation products and services to customers for more than 30 years, we have helped countless homeowners and commercial property owners cut costs, maximize energy efficiency and minimize their environmental footprint.

Since 1986, Southland Insulators has been the area's leader in residential insulation and commercial insulation. Our commitment to quality installation and superior customer service is unparalleled.

To request an estimate today, call us at (703) 368-1965!



Friday, October 25, 2019
What is batt insulation?

What is batt insulation?

When asked about insulation, batt insulation frequently comes to mind. Batt insulation consists of flexible fibers of fiberglass or mineral wool (rock wool).  It was originally produced in rolls, but today it is precut into standard industry widths and is available in many R-values. The R-value best for your project is determined by building codes, climate and the location of the insulation application.

Batt insulation can be installed with or without facing depending on the level of moisture barrier needed. Climate is the factor that determines how much vapor barrier is required and whether to install batt insulation with or without facing. In some climates the facing (known as kraft-faced batts) acts as the vapor barrier while other climates may require a separate vapor barrier which calls for unfaced batt insulation.

Batt insulation can be applied in almost any area of your home or business including walls, ceilings, attics and floors. Sometimes though, other insulation choices may provide better options, i.e., spray foam insulation or foam insulation.

For maximum efficiency, batt insulation must be installed correctly. Batt insulation should never be packed tightly into an area or compressed as this will compromise the R-value.

Hire an experienced, professional contractor to install your insulation to achieve the best results. Discuss your insulation project with our office today.



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How to install attic insulation

How to install attic insulation

Insulating your attic is crucial for keeping your living space comfortable and decreasing your energy bills. There are many things you need to know about installing insulation in your attic.

Proper installation is necessary for your attic insulation to be effective. Your comfort and utility bills will be negatively impacted if the attic insulation is not installed correctly.

Ensure that your attic is properly ventilated before installing insulation to maintain the right levels of moisture and reduce the risk for mold growth. An attic ventilation system can help prevent moisture and potential mold because it creates a continuous upward air flow.

Loose-fill insulation (also known as blown-in insulation) is typically used in open attics. Loose-fill insulation creates a complete thermal blanket to decrease the transfer of heat. Blown-in insulation also fills corners in the attic and makes your existing home more comfortable and energy efficient.

Air leaks should be sealed before adding insulation for additional energy efficiency. Sealing air leaks will plug penetration points to prevent air transfer which helps with energy savings.

Installing spray foam insulation in your attic seals air leaks and adds R-value. Spray foam is applied along the roofline to seal the very top of your home and help prevent temperature fluctuation.

Contact a qualified insulation contractor to install spray foam insulation in your attic. A professional contractor will assist to make sure you have proper ventilation in your attic and the right R-value.

Contact our office to inquire about attic insulation for your home or business.


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How thick should spray foam insulation be?

How thick should spray foam insulation be?

The thickness of spray foam insulation is determined by multiple factors. Insulation is rated by its R-value which measures the resistance to heat flow. A higher R-value indicates higher thermal resistance. The R-value is apparent for cellulose, fiberglass or mineral wool insulation. But the R-value of spray foam insulation depends on the type of spray foam that is installed.

The R-value of spray foam insulation is different. Spray foam insulation R-value is contingent on the type of spray foam insulation being applied. Spray foam insulation is available in open cell and closed cell.

The R-value of open cell spray foam is about 3.5 per inch, although the R-value can be different depending on the product. Open cell spray foam has a low density and is many times applied in interior walls and areas that are hard to reach in a home.

The R-value of closed cell spray foam ranges from 5.0 to 7.0 per inch, although the R-value can be different depending on the product. Closed cell spray foam is denser than open cell spray foam and is often used in areas like basement box sills where it helps prevent moisture from entering the home.

So, to answer the question “How thick should spray foam insulation be?” the answer depends on certain factors. The U.S. Department of Energy recommends insulation levels relative to the climate zone and part of the structure being insulated. It is also essential to examine the degree of moisture permeability that is needed. These factors determine whether open cell or closed cell spray foam insulation should be installed.

Consult with a professional insulation contractor to ensure that your home has the correct amount of insulation. At Southland Insulators we have the expertise and training to advise you on the right insulation for your home.

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Why should you insulate?

Why should you insulate?

Saving on energy bills and maintaining a comfortable home or business starts with insulation. Insulation resists heat flow, so when heat flow is decreased your home’s interior temperature stays more comfortable and your utility bills are lower.

Heat flows from warmer to cooler areas until the temperature equalizes. So warm air attempts to leave a home or building in the winter and hot air attempts to come into a home or building during summer months. This causes your HVAC system to work more to sustain the ambient indoor temperature resulting in higher energy bills.

Proper insulation provides an effective thermal barrier to decrease heat flow, lower energy costs and maintain a more comfortable living space. If you are interested in installing insulation in a new home or building or are interested in upgrading existing insulation, contact us for an estimate.



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Monday, November 12, 2018
Looking to save money on energy bills? Check your basement

Looking to save money on energy bills? Check your basement

Basement Box Sills And Rim Joists
When thinking about insulation, the attic is the first area of a home that comes to mind. Many homeowners never think of the energy lost through their basement box sills and rim joists.

Basement box sills and rim joists are a major source of energy loss. These areas are located around the perimeter of the basement ceiling where the walls of the home meet the foundation. They are some of the thinnest points in a home’s exterior and allow outside air to easily leak into the basement.

Not only can unconditioned outside air enter the home through these areas, they are also convenient entrance points for pests. Spiders, bugs and other creatures can find their way into your home through residual penetration points around HVAC, electrical and plumbing access points next to the basement ceiling.

Spray foam is an ideal two-in-one product choice that both insulates and air seals rim joists and box sills. Be sure to hire a qualified, insured and experienced spray foam contractor to ensure your basement box sills and rim joists are properly insulated and air sealed.

Insulating and air sealing your rim joists and box sills will make your basement (and entire home) more comfortable, reduce pest infestation and help lower your energy bills. Contact us to schedule your free estimate!



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Monday, November 5, 2018
The Good, Better and Best of Attic Insulation

The Good, Better and Best of Attic Insulation

Attic Home Insulation
When it comes to home insulation, the first area that comes to mind is the attic. Airflow within a building moves from ground to sky, naturally pulling conditioned indoor air up and out of a structure. Proper attic insulation helps keep conditioned air inside your home and helps keeps your home comfortable. Keeping conditioned air inside your home can also reduce wear and tear on your heating system and help keep energy bills in line.

There are three common methods used to insulate attics – blown-in fiberglass, blown-in fiberglass with air sealing and spray foam insulation. Here’s what you need to know about each.

Blown-in Fiberglass

Insulating attics with blown-in fiberglass insulation is a quick and easy way to add R-value. This is a basic method of attic insulation and a cost effective option to upgrade attics of existing homes or insulate attics in new homes.

Blown-in Fiberglass with Air Sealing

Combining blown-in fiberglass insulation with air sealing dramatically increases a home’s energy efficiency. This method helps keep conditioned air inside the home and adds R-value. In an existing home, attic insulation is removed and penetration points around the attic floor are sealed. After air sealing is complete, a fresh blanket of blown-in fiberglass insulation is installed. In a new home, penetration points around the attic floor are sealed before blown-in insulation is installed.

Spray Foam Insulation

Installing spray foam insulation in the attic of a new or existing home provides optimal energy protection. In an existing home, insulation is removed from the attic and spray foam is installed along the roofline. In a new home, spray foam insulation is installed along the roofline as part of the construction process.


Proper attic insulation combined with air sealing is one of the most cost effective ways to save money on monthly energy bills. Wondering if your home could benefit from additional attic insulation? Ready to discuss insulation for your new home project? Contact our office today!  




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