What is Insulation R-Value & Why Does It Matter?

You will typically hear the term “R-value” when discussing insulation and energy efficiency. What is it, and why does it matter?

The job of insulation is to keep the heat outside your home on hot days and inside during cold weather by not letting it move easily from place to place. The result is a cooler home in the summer, a warmer home in the winter, lower energy bills, and better acoustic performance.

InSoFast, LLC manufactures closed-cell, injection-molded EPS foam insulation panels that can be universally applied to any interior or exterior wall assembly in both new and retrofit construction projects. Our helpful team of experts can quickly explain the importance of R-value when choosing insulation materials.

What Does “R-Value” Mean?

The “R” in R-value refers to thermal resistance. It measures how effectively a type of insulation will resist the transfer of heat. In a nutshell, a higher R-value means the material is better equipped for thermal resistance than material with a low R-value.

High R-value alone, however, is not sufficient if small gaps and fissures in your building materials allow heat to escape.

With traditional fiberglass and wood framing, for example, each wood stud represents a thermal short circuit where moisture-filled, heat-transferring air can pass through the barrier. The stud area accounts for 15% to 25% of the wall surface and significantly reduces the R-value of the fiberglass.

Why Choose InSoFast Insulation Panels?

InSoFast panels feature integrated, non-conductive polypropylene studs that are encapsulated by the insulating material. Their interlocking grooves create a tight seal at the intersection of each panel. The tongue-and-groove connections within the panels allow them to be installed without any gaps.

The InSoFast UX 2.0 panel is 2-inches thick and has a flat surface that exposes the face of the embedded studs. The continuous R-value of 8.5 outperforms traditionally framed R-13 batt walls. The UX 2.0 panel is sufficient for most interior applications.

For a higher R-value, the EXi 2.5 Panel, at 2 ½-inches thick, has a continuous R-value of 10 and provides 20% more insulation than our UX panels.  

The InSoFast EXe 2.5 panel is also 2 ½-inches thick and designed for exterior applications. Both sides feature ORSC, Section R703.1.1-approved rain screen and drainage technology on both sides. Their continuous R-value of 10 outperforms traditionally framed R-15 batt walls.

InSoFast insulation panels are the easiest option for DIY insulation. Most installations can be completed with a utility knife and caulk gun.

Insulation R-values matter because heat loss can have an enormous effect on your comfort and energy usage. Check out the many benefits of InSoFast insulation panels today!