OSB for Structural Insulated Panel (SIP) Facing Material
SF-133
Oriented strand board (OSB) for use as facing material of structural insulated panels (SIPs) shall meet the minimum requirements in the International Residential Code (IRC) section R613.3.2 (Facing). Facing material shall be wood structural panels conforming to US Department of Commerce Voluntary Product Standard PS 2, having a minimum nominal thickness of 7/16 inch (11 mm), identified by the mark of an approved agency and shall meet the additional requirements of the IRC Table R613.3.2 (included in Table 1 of this document for reference).
Table 1. Minimum Properties1 for OSB Facing Material Used in SIP Walls
| Flatwise Stiffness2 (lbf-in²/ft) |
Flatwise Strength3 (lbf-in/ft) |
Tension3 (lbf/ft) |
Density4 (pcf) |
IRC5 |
| Along |
Across |
Along |
Across |
Along |
Across |
|
|
| 54,700 |
27,100 |
950 |
870 |
6,800 |
6,500 |
35.0 |
2009 |
| 55,600 |
16,500 |
1,040 |
460 |
7,450 |
5,800 |
34.0 |
2012 |
1) Values not intended for design use
2) Mean test value
3) Characteristic test value (5th percentile with 75% confidence)
4) Mean test value and based on oven-dry weight and volume
5) 2009 IRC revision RB128-09/10 approved and is published in the 2012 Edition.
The OSB panels from the manufacturers listed in Table 2 met the requirements in section R613.3.2 of the International Residential Code. The manufacturer shall designate whether the product meets the 2009, 2012 or both years of the IRC.
Table 2. OSB Manufacturers
| Manufacturer |
Location (mill number) |
Minimum Thickness (in.) |
TECO Report |
| Huber Engineered Woods, LLC |
Crystal Hill, VA (229) |
7/16 |
10-P-0007a
11-P-0057b |
a) Met 2009 IRC requirements.
b) Met 2012 IRC requirements.
TECO maintains accreditations with the International Accreditation Service (IAS). Copies of our Test Laboratory (TL-207 & TL-306) and Inspection Agency (AA-654) accreditation certificates can be downloaded from the IAS website at www.iasonline.org, or by contacting TECO.
