OX Engineered Products

Structural Insulated Sheathing

OX-IS Sheathing (formerly SI-Strong) and Strong-R; Structural Insulated Sheathing Systems
for Steel and Wood Framing

DIVISION 5 OR 7, SPEC 074800 - Continuous Insulation Attachments

OX-IS Sheathing for Wood Framed Construction

OX-IS Structural Sheathing is Class B code-compliant for use in sheer walls and as a braced wall panel. Use as continuous structural insulated sheathing to replace OSB and add thermal value to exterior wall assemblies. At one third the weight of 7/16” OSB or plywood and the elimination of building wraps, OX-IS is a great way to save time and money.

  • Structural lateral bracing and transverse wind load resistance
  • Best in class R-value per inch
  • Code approved Water-Resistive Barrier
  • Lower cost structural and thermal upgrade
  • Lighter weight boards are installed faster at a lower cost in only one pass around the building.

Strong-R Provides Greater Benefits and Speed of Application

  • Our Class-A commercial version Strong-R Structural Sheathing is ASTM E84 Class A and NFPA 285 compliant and comes in thicknesses up to 4 inches.

Minimize Heat Gain and Improve Indoor Quality

  • The addition of any R-value on the exterior wall is a significant upgrade in any climatic zone.


OX-IS Structural Insulated Sheathing

SI-Strong Structural Polyiso Insulation

Strong-R Structural Insulated Sheathing

Strong-R Commercial Insulated Structural Sheathing
SI-Strong Structural Polyiso Insulation
SI-Strong Structural Polyiso Insulation
SI-Strong Structural Polyiso Insulation
Strong-R structural sheathing
Contact Bob Cujé for Specs, Budget Numbers, Samples – 303-779-0321