Comparisons · 6 min read

Blown-In Insulation: Fiberglass vs. Cellulose for Your Schertz Home

Trying to pick the right Blown-In Insulation for your attic in Schertz, TX can be a big decision. Peak Insulation is here to help you understand the differences between fiberglass Blown-In Insulation and cellulose Blown-In Insulation. This information will help you know what works best for keeping your Schertz home comfortable. It will also help keep your energy bills down in Schertz, TX.

← Back to Blog Completed blown-in insulation work at a residential property in Schertz, TX

Let's talk about Insulation. When you are looking at increasing your attic's R-value, blown-in Insulation is usually the best way to go. It is efficient, it fills those awkward spaces, and it generally does a good job. But then you have to choose between fiberglass and cellulose. Both are solid options for Insulation, but they have their own specific qualities, especially when you consider our Texas heat and humidity. I have seen plenty of both types of Insulation in homes all over Schertz, from the older places near Randolph AFB to the newer builds in Cibolo Canyons, and I can tell you, the right choice of Insulation makes a real difference for your home.

Cost: How Much Will It Be?

Cost is usually the first thing on most people's minds. Generally speaking, blown-in Fiberglass Insulation tends to be a bit more budget-friendly upfront than Cellulose Insulation. You are looking at roughly $0.90 to $1.50 per square foot for Fiberglass Insulation, while Cellulose Insulation usually runs from $1.00 to $1.80 per square foot. These are just averages, and prices can change based on the R-value you are aiming for and how much material we need. For example, getting your attic up to an R-38, which is a good target for our climate in Schertz, means blowing in a good amount of Insulation material.

Do not just look at the sticker price. Think about the long-term benefits. While Cellulose Insulation might be a little more expensive per square foot, its R-value can be slightly higher per inch. This means you might need a little less of it to hit your target R-value. But Fiberglass Insulation can often achieve higher R-values in the same wall cavity because of its engineering. It is a balance, and we always look at the total project cost, not just the material cost, when we give you an estimate at Peak Insulation. Peak Insulation provides Insulation services for homes in Schertz, TX.

Durability: How Long Will This Insulation Last?

This is where our Texas climate really becomes important. We get serious humidity in Schertz. That is a big factor for Insulation. Fiberglass Insulation is made from spun glass fibers, and it is very resistant to moisture. Fiberglass Insulation does not absorb water, which is a huge advantage in a humid environment like ours. If Fiberglass Insulation does get wet, it can still trap moisture, which can lead to mold, but the Fiberglass Insulation material itself will not degrade like Cellulose Insulation.

Cellulose Insulation, on the other hand, is made primarily from recycled paper products, such as old newspapers. Cellulose Insulation is treated with fire retardants and pest deterrents, which is good. But Cellulose Insulation is hygroscopic, meaning it can absorb moisture from the air. If Cellulose Insulation gets wet and stays wet, it can lose its insulating properties, it can sag, and it can even become a place for mold to grow. While some people say Cellulose Insulation can dry out without losing its power if the source of the water is fixed, in a hot, humid climate like Schertz, that moisture can sit against your wood framing. This can create problems. For long-term durability in a typical Schertz attic, especially one with some humidity, Fiberglass Insulation often has the advantage because it is less sensitive to moisture.

Another thing to consider with Insulation is settling. Blown-in Fiberglass Insulation settles about 3-5% over its lifetime. This is a minimal amount of settling. Cellulose Insulation, being a heavier material, can settle 15-20% in an open attic. This means an R-38 Cellulose Insulation installation could drop to R-30 or less over a few years, reducing its effectiveness. Peak Insulation helps homeowners understand the durability of Insulation in Schertz, TX.

Maintenance: What Is Involved With Insulation Maintenance?

With either blown-in Fiberglass Insulation or Cellulose Insulation, maintenance is not usually a big deal once it is installed correctly. The main thing is keeping the Insulation dry and undisturbed. If you have a roof leak or a plumbing issue in your attic, that is when you might need to address the Insulation. As I mentioned, Cellulose Insulation is more susceptible to moisture damage, so a persistent leak could mean needing to remove and replace sections of the Cellulose Insulation.

Fiberglass Insulation is less prone to moisture issues, but any Insulation that gets soaked will lose its effectiveness. Soaked Insulation can also lead to other problems like mold. The best maintenance for both types of Insulation is really about maintaining your roof and your attic ventilation. This helps to prevent moisture in the first place. Peak Insulation provides Insulation services to homes in Schertz, TX.

Appearance: Does Insulation Appearance Matter?

When it comes to appearance, we are talking about your attic, so it is not like you are decorating a living room. Blown-in Fiberglass Insulation is typically white or pink and has a fluffy, cotton-candy-like look. Cellulose Insulation is usually gray or brownish-gray and has a denser, more shredded paper appearance.

Neither type of Insulation is particularly pretty, but that is not their job. What matters is that the Insulation is evenly distributed and filling all the nooks and crannies. This creates a consistent thermal barrier. When we are done with an Insulation job, whether it is Fiberglass Insulation or Cellulose Insulation, it will be a nice, uniform blanket of Insulation. It will cover your attic floor properly. Peak Insulation installs Insulation properly in Schertz, TX.

My Recommendation for Schertz, TX

Given our climate here in Schertz, which includes the intense summer heat, the high humidity, and the occasional heavy rains, I generally lean towards blown-in Fiberglass Insulation for most attic applications.

Here is why:

  • Moisture Resistance: Fiberglass Insulation handles humidity better. It does not absorb water like Cellulose Insulation. This is important for long-term performance and for preventing mold growth in our damp environment in Schertz.
  • Less Settling: The minimal settling of Fiberglass Insulation means it maintains its R-value more consistently over decades. You get the Insulation you paid for, year after year.
  • Cost-Effectiveness: While both types of Insulation are affordable, Fiberglass Insulation often has a lower upfront cost.

Now, Cellulose Insulation is not bad. It is a good eco-friendly option, made from recycled materials, and it can offer slightly better sound dampening because of its density. Cellulose Insulation is also good for dense-packing into wall cavities where you need to block air movement in a tighter space. But for an open attic in our specific climate, where humidity is a constant battle, Fiberglass Insulation is often the more durable, lower-maintenance choice. Fiberglass Insulation holds its R-value reliably for many decades. Peak Insulation helps homeowners choose the right Insulation for their homes in Schertz, TX.

Ultimately, the best Insulation choice for your home depends on your specific situation, your budget, and what you prioritize. That is why we always recommend a thorough attic inspection. We can come out, take a look, and give you a tailored recommendation. This recommendation will make sense for your home and help you save on those hefty AC bills. Peak Insulation provides Insulation inspections and installations for homeowners in Schertz, TX.

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