Where is Polyiso Wall Insulation Used?

Polyiso wall insulation is used on the vertical surfaces of the building envelope—on the walls that separate the inside of your building from the outside.

What is the R-Value of Polyiso Wall Insulation?

The R-value of polyiso wall insulation varies by manufacturer, but is typically around R5-R6 per inch. Rmax polyiso wall insulation products, including Durasheath® and Thermasheath®, carry an R-value of R6 per inch.

Is Polyiso Wall Insulation Waterproof?

The foam core of polyiso wall insulation is naturally water-resistant because of its chemical makeup (thermoset plastic) and closed-cell structure. It’s actually the facer of polyiso that determines whether the boards are fully waterproof. Learn more.

How Do I Attach Polyiso Wall Insulation?

You have three choices of installation methods for polyiso wall insulation, depending on your installation. Most often, polyiso wall insulation is mechanically attached to studs, plywood, or furring with screws that have large, specialized washers to secure the insulation.

What Are Other Types of Wall Insulation?

Other common wall insulation materials include fiberglass batts or rolls, spray-foam insulation, loose-fill cellulose insulation, and other types of polystyrene foam boards like extruded (EPS) and expanded (XPS).

POLYISO CONTINUOUS INSULATION
Wall, Ceiling & Foundation product line

For over 35 years, Rmax has delivered innovative, polyiso-based insulation solutions for commercial, residential, and industrial applications. Our products offer superior R-values, reduced environmental impact, and optimal efficiency in installation, cost, and design.

Engineered for exceptional insulating protection, Rmax meets the latest building codes while enhancing construction ease, energy efficiency, and cost savings. Choose Rmax for a better building envelope and improved bottom line.