Stop Heat Loss at the Source with Blown-In Fiberglass Insulation

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Is Your Attic Costing You Money?

Most homeowners think their attic is “fine” because they can’t see it. But if your home was built more than 10 years ago, or if you can see the wooden floor joists in your attic, you are likely losing hundreds of dollars every year in escaped energy.

At Lang Home Exteriors, we specialize exclusively in high-performance Blown-In Fiberglass Insulation. We don’t use “one size fits all” rolls that leave gaps; we install a seamless thermal blanket that protects your home for decades.

This sharp rise in energy costs has steepened the cost-benefit curve of improving your home’s energy efficiency, making adding attic insulation one of the best money-saving home improvement projects of 2026.

Get a Free Estimate

Ready to start saving on your energy bills? Let us know your favorite way to connect and we’ll schedule your free attic insulation estimate.

Is Your Attic Up to 2026 Standards?

Energy standards have evolved. While older homes often have only 6 to 10 inches of insulation, the Department of Energy now recommends up to R-60 for our climate, which is roughly 16 to 20 inches of fiberglass protection.

Are you protected? You can find the recommended R-value for your attic based on your climate zone to see how your current insulation measures up against modern requirements.

Is Your Money Leaking Through Your Roof?

It’s a simple law of science: heat rises. In a poorly insulated home, your attic acts like an open window, allowing up to 25% of your heated air to escape during the winter. This doesn’t just make your upstairs chilly – it forces your furnace to work overtime, driving up your monthly bills.

By installing high-density blown-in fiberglass, you create a permanent thermal cap on your home. This simple upgrade can reduce your total heating and cooling costs by an average of 15-20% year-round.

Up to 25% of your home’s heat is lost through your attic.

Poor InsulationGood Insulation

An Investment That Pays for Itself

Properly insulating your attic isn’t just a home improvement; it’s one of the only upgrades that offers an immediate return on investment through monthly utility savings.

Why We Specialize in Blown-In Fiberglass Insulation

We’ve evaluated every insulation method on the market, and we choose blown-in fiberglass for four critical reasons:

  • Total Thermal Coverage: Traditional insulation “batts” (rolls) leave gaps around wires, pipes, and light fixtures. Our specialized machine blows high-density fiberglass into every tiny crevice, creating a seamless seal that eliminates drafts.
  • It Won’t Settle: Unlike cellulose or other organic materials that compress and lose effectiveness, our fiberglass is engineered to maintain its “loft” and insulating power for the life of your home.
  • Naturally Safe & Durable: We use material that is naturally fire-resistant, moisture-resistant, and non-combustible. It does not rot or provide a food source for mold and pests.
  • Validated Performance: You can read the scientific data on the safety and performance of fiberglass to see why it remains the industry’s most trusted material.

The Lang Home Exteriors Process

We respect your home. Our “White Glove” installation ensures the only thing we leave behind is a more comfortable house.

  1. Professional Assessment: We measure your current R-value and identify “leak points” where air is escaping.

  2. Home Protection: We lay down drop cloths and protect your floors before any equipment enters the home.

  3. Precision Install: Using a high-volume hose system, we distribute a uniform layer of fiberglass to your target depth.

  4. Ventilation Check: We ensure your soffit vents remain clear so your attic can breathe, preventing moisture buildup.

  5. Final Cleanup: We vacuum the workspace and leave your home exactly as we found it.

FAQ

Insulation’s ability to stop energy loss is measured by its “R-value.” The higher the R-value, the better the insulation. According to the U.S. Department of Energy and the International Energy Conservation Code, homes in our climate zone (5) should be insulated to R-49 or R-60. We recommend insulating to R-60 to maximize the long-term savings on future heating and cooling bills.

Cellulose insulation technically offers a higher R-value per square inch at the time of installation, but cellulose settles over time, causing it to lose its insulating properties. Blown-in fiberglass insulation retains its loft and will not settle in your attic over time. For this reason, along with the harsh chemical treatments added to cellulose (bad for the environment!) and its messy installation process in your home, we recommend blown-in fiberglass insulation as the best long-term investment.

Add up your gas (heating) and electric (cooling) bills since the day you moved into your house. Now, imagine you had invested in attic insulation and saved yourself 10%, 20% or more on these gas and electric bills, not to mention padded the value of your home (no pun intended) for future homebuyers. From a different angle, how much more would you have paid for a more energy-efficient home? How much more are you paying to heat and cool your home than you could be?

The average payback period of installing attic insulation varies based on several factors, the most significant of which being the quality and quantity of your existing insulation. If your attic insulation has settled significantly or your attic was very poorly insulated to begin with, then your investment will pay back quickly.

Fiberglass insulation is safe for long-term use in your home once it has been installed. Unlike other common alternatives, fiberglass is naturally non-combustable and acts as a flame retardant barrier in your home. It also does not absorb water. It is generally not recommended to breath in fiberglass, but once the product settles, this is a minimal issue (just wear a mask if you will be moving anything around). Because of our installation process, airborne fiberglass product never enters your living space.

Our 2-man crew takes just 1-2 hours to complete most insulation jobs. One person aims the blower hose to “spray” fluffed up fiberglass insulation into the attic, while the other feeds compressed blocks of fiberglass insulation into the blower unit in an outdoor location. The “fluffed up” fiberglass insulation is blown through a hose and straight into the attic – meaning loose insulation never actually enters your home (aka it’s magic).

During our Chicago winters, roughly 25%-40% of your home’s heat is lost through your attic – more than any other single area of the home. Attics are usually poorly insulated, yet they are the most accessible locations to insulate for your home.

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START SAVING TODAY

Say goodbye to outrageous heating and cooling bills.

START SAVING TODAY

Say goodbye to outrageous heating and cooling bills.