Answering Your Questions About Fiberglass Insulation

Insulation may sound straightforward, but at Spartan Insulation, we believe there’s real craftsmanship in doing it right. Like any home renovation or construction project, doing insulation the right way can mean the difference between 5 years of cold nights and 20 years of comfortable temperatures. But with so many different forms of insulation, choosing the best one for you can seem difficult. Which insulation will be the easiest to install? Which will be the most effective, saving you money in the long and short term?

While there are a variety of options, we believe that fiberglass insulation stands out as a go-to option for homeowners and builders alike. Affordable, adaptable, and incredibly efficient, fiberglass is one of the most widely used insulators today. But what exactly makes it so effective at maintaining indoor comfort? Today, we’re taking a closer look at how fiberglass insulation works—and why it might be the right choice for your home.

How Fiberglass Insulation Works

Surprisingly, it’s not the glass fibers themselves that do the insulating—it’s the air trapped between them. Air, despite its invisibility, is a fantastic barrier against heat transfer. Because gas molecules are spaced so far apart, they don’t easily transfer heat from one to the next. That’s why materials that trap still air, like fiberglass, work so well as insulators.

The tangled web of fine glass threads in fiberglass creates a dense structure full of microscopic air pockets. These pockets slow down the movement of heat, keeping warm air in during the winter and out during the summer. The result? A more stable indoor temperature and greater energy efficiency year-round.

Why Is Fiberglass So… Pink?

If you’ve ever seen fiberglass insulation during a renovation, odds are it was bubblegum pink. But fiberglass doesn’t naturally come in that color—it starts out as a more muted yellow-orange hue. The pink color actually originated as a clever marketing strategy by Owens Corning. Hoping to set their product apart, they tinted it pink—and consumers loved it.

The branding was so successful that Owens Corning eventually trademarked the color itself, and “PINK” insulation became a familiar staple in homes across the country. While fiberglass comes in other colors today, pink is still the most iconic thanks to that decades-old marketing decision.

Get Fiberglass Insulation Installed in Your Home!

If you’re considering fiberglass insulation for your home, we’d love to help. At Spartan Insulation, we see every project as a chance to apply our expertise and passion. Click here to contact our team today for more information!