Rboard® Exterior Wall Insulation
Rboard® is a non-ozone depleting, versatile substrate that can be used behind a variety of exterior cladding.
Rboard® sheathing is a rigid polyiso foam insulation panel with a specially coated and patented facer on both surfaces. It is one of the most cost effective, energy efficient sheathing materials available in the marketplace.
Builders who prefer the strongest available non-reflective faced polyiso insulation choose Rboard® for superior insulation qualities and easy installation. When properly installed, Rboard® wall insulation will provide added insulation and yield immediate energy savings in both Commercial and Residential applications. R-values range from 3.0 to 21.7, depending on thickness.
Rboard® Applications
For specific information about all Atlas Sheathing applications, please download the Atlas Insulating Sheathing Installation Details. Rboard® is typically specified for:
- Exterior Wall Applications
- Fire Resistant Wall Assembly (1 Hour)
- Insulated Crawl Space
- Interior Insulation Slab on Grade
- Interior Insulation Under Slab
- Cavity Wall/Masonry Insulation
- Metal Stud Wall Applications
- Re-Siding Applications
- Stucco Applications (Hardcoat)
ASHRAE Standard 90.1 and Continuous Insulation
ASHRAE Standard 90.1 is the energy code reference in the International Building Code (IBC) and the International Energy Conservation Code (IECC). As such, this standard defines code minimums for the classes of constructions covered. In 2008, for the first time in over 19 years, ASHRAE increased the minimum required prescriptive R-value (resistance to heat flow) for roof and wall insulation levels in Standard 90.1
The next IRC and IBC code cycles will require the installation of a layer of continuous insulation over the entire exterior of walls of residential and commercial construction. This requirement will provide for a "thermal break" and added R-value to the structure - making the building much more airtight and energy efficient, as compared to current and past required construction. Foam insulation with an R-value of 5 will be the minimum acceptable continuous insulation. Atlas Rboard® polyiso foam insulation at 1.0" thick provides an R-value of 6.0. Atlas recommends thicker insulation and promotes Beyond the Code initiatives that work to create more energy efficient buildings today for a greener tomorrow.
Water Resistive Barrier System
Rboard® is a component of a wall system recognized as a Water Resistive Barrier by the International Residential Code Report #ESR-1375. See the WRB Tapes and System page for more information.
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GreenZone is a great resource for finding information about ASHRAE 90.1 standards, PIMA, LEED™ credits, Atlas product innovation, Environmental articles, energy efficiency ideas and more.
Atlas Roofing Corporation has recorded another first. Thanks to Atlas’ innovative facer technology, Atlas has developed the first high performance polyiso roof insulation product capable of never-before-seen wind uplift ratings for selected roof membranes adhered directly to polyiso.
GEMINI™ Tapered Edge Strips are the only polyiso insulation component with a Zero Edge Solution. Gemini TES provides a smooth transition from tapered edge to roof surface in a dimensionally stable insulation panel that is stronger and more durable than perlite and fiberboad.
