Instructions / Assembly

26
ATTACHMENT AND SUPPORT
Span Tables for High Compressive Products
Span table guidance for three typical exterior insulated wall assemblies using:
• Owens Corning
®

®
RainBarrier
®
ci High Compressive (80)
• Owens Corning
®

®
RainBarrier
®
ci High Compressive Plus (110)
• Owens Corning
®

®
RainBarrier
®
ci High Compressive Max
The intent of these span tables is to provide guidance when using and specifying Owens Corning
®

®
RainBarrier
®
ci High
Compressive insulation products where the cladding supports are fastened outboard of the insulation with the cladding support
fasteners penetrating the continuous insulation and secured back to the structure.
The span tables provide minimum fastener spacing guidance based on international code requirements for a variety of horizontal and

Span table guidance is provided from the following: a detailed review of structural code requirements (International Building Code 2018),
physical product and load testing, research from published reports, such as the 2014 United States Department of Energy (DOE) report

assemblies.
Note: Numerous other project factors should be considered by the architect or engineer of record, including various static, dynamic, and
cyclical structural loads, such as system dead loads, wind loads, seismic loads, and all combined loads.
The variables included in the span tables are presented below:
HIGH COMPRESSIVE
INSULATION BACKUP WALL FRAMING
INSULATION
THICKNESS FURRING/GIRT TYPE FASTENER TYPE
FURRING/GIRT
SPACING
Owens Corning
®

®
RainBarrier
®
ci High
Compressive (80)
2" x 4" Wood Studs 1.5", 2", and 4" 
Wood Furring
#8 Self-Tapping Wood
Screw
16"
Owens Corning
®

®
RainBarrier
®
ci High
Compressive Plus (110)
16 Gauge Steel Studs 1.25", 2", and 4" 
20 Gauge Hat
Channel
#8 Self-Tapping Steel
Screw
24"
Owens Corning
®

®
RainBarrier
®
ci High
Compressive Max
16 Gauge Steel Studs 1", 2", and 4" 
min. 20 Gauge Hat
Channel
#8 Self-Tapping Steel
Screw
24"
Material Properties and Reference Values
COMPONENT PROPERTY VALUE
Wood Furring
Wood Type Alaskan Cedar No. 2
Size 
Steel Girts
Steel Grade ASTM 792 Grade 33
Yield Strength 33 ksi
Ultimate Strength 45 ksi
Backup Wall Steel Studs
Steel Grade ASTM 792 Grade 33
Gauge 16
Backup Wall Wood Studs
Wood Type Spruce Pine Fur No. 2
Size 
#8 Self-Tapping Screws
Design Pull-Out (Tension) 67.5 lbf.
Design Bearing (Shear) 30.4 lbf.
Stud Wall Fastener
Design Pull-Out (Tension) 130.7 lbf.