Insulation keeps your home or business comfortable year-round, and two of the most common choices are fiberglass and radiant barrier. Fiberglass is made of glass fibers that slow heat transfer through their poor thermal conductivity. Radiant barrier foil works differently — it reflects radiant heat away, stopping it before it enters the building. Understanding how these two approaches compare will help you pick the right one for your project.
Efficiency
Radiant barrier is a core part of reflective insulation systems and delivers significant energy savings, outperforming fiberglass in radiant heat control by a wide margin. Fiberglass only slows radiant heat as it passes through; a radiant barrier reflects and blocks that heat instead. That difference means reflective insulation does more with less, cutting energy use in settings where radiant heat is the main problem.
Ease of Installation
Radiant barrier foil does not itch or irritate skin on contact, which makes it a more comfortable install than fiberglass. Both go in quickly during new construction or renovation, but they go in differently. To block heat from entering the building, a radiant barrier is placed over the inner surface of the trusses and studs. Fiberglass, by contrast, is pressed between the framing studs.
Project Costs
Fiberglass is cheap and easy to find, but installing it can cost more than laying a radiant barrier. Workers handling fiberglass need protective gear and must avoid contact with the tiny glass particles, which adds labor and care. A radiant barrier rolls out and staples into place, with no special protection required.
Conclusion
Your energy goals, installation needs, and budget will decide which product fits. For radiant barrier foil and other reflective insulation on your next project — new build or renovation — contact the team at Energy Shield USA.
