DOW STYROFOAM SIS™ Brand Structural Insulated Sheathing

Without adding a single step to your construction process, you can now achieve new levels of efficiency in every home you build: efficiency of design, efficiency of effort and perhaps most important, efficient use of energy required for heating and cooling.

Styrofoam SIS™ will help you achieve structural strength, insulated comfort & performance, and a water-resistive barrier -all of this in just one trip around the house that eliminates the need for wood structural panels or house-wrap.

Braced for Performance
One of the biggest advantages of the Styrofoam SIS™ Brand Structured Insulated Sheathing is the structural integrity achieved by the high-pressure laminated structural member that gives strength to the panel and reinforces the insulating foam. The lightweight 1/2" boards are easy to work with, and are just about one-third the weight of ordinary OSB sheathing.

• Styrofoam SIS™ meets or exceeds structural codes for wall sheathing
• Can be adapted to both 2x4 or 2x6 construction
• No need for metal T-bracing or wood let-in bracing

Energy Efficiency is at the Core of Styrofoam SIS™
STYROFOAM SIS™ Brand Structural Insulated Sheathing is the industry's first structural insulated sheathing to achieve significant R-values (R-3.0 at 0.5"; R-5.5 at 1"), while meeting ICC-ES AC269: Acceptance Criteria for Racking Shear Evaluation of Proprietary Sheathing Materials Used as Braced Wall Panels.

• Long-term, stable thermal performance
• Reduced air infiltration and moisture intrusion
• Reduced energy consumption, which in turn reduces greenhouse gas emissions
• Up to 80% post-consumer recycled content

Closed-cell Construction = Moisture Control
The closed-cell polyisocyanurate foam core provides moisture resistance and a high R-value, helping reduce potential for moisture within the wall cavity. The BLUE™ non-reflective resilient exterior surface offers water resistance & high durability. STYROFOAM SIS™ Brand Structural Insulated Sheathing is a code approved water-resistive barrier (WRB) that offers efficient installation because the primary water-resistive layer is already factory installed.

The Core Components
To sum it up, the STYROFOAM SIS™ Brand Structural Insulated Sheathing consists of three layers:

• Thin structural member (high-pressure laminated)
• Closed-cell, moisture-resistant rigid polyisocyanurate foam core for excellent compressive strength and long-term, stable R-value
• BLUE™, non-reflective, resilient exterior surface provides water resistance, high durability and excellent curb appeal

For a limited time, you may qualify for a tax break when you use STYROFOAM SIS™ Brand Structural Insulated Sheathing. Tax credit incentives initiated by the U.S. Energy Policy Act of 2005 have been extended for builders who use energy efficient building materials and products. To learn more, visit www.dowsis.com or call 1-866-583-BLUE (2583).

Find out more about DOW Styrofoam SIS™ on our Featured Product page as well as in our eShowroom.

Watch the Videos on YouTube
To learn more about Styrofoam SIS™ click here.

See the MVP Award video for "Most Valuable Product 2009" from Building Products Magazine here.