TECO TESTED'

PS 2-92 PBP-143

EXPOSURE 1

FLGDCDR ISPAN' 3/4" 24 lllGHES 0.C.

UNDEIILAY]U|ENT SIZED FOR SPAEING

MAilUFAGTURER'S ilAME MILL ll0.

Standards

Below the name of the certification agency will be the name of the standard, for example PS 2. OSB panels are manufactured to meet performance criteria set by the U.S. Department of Commerce's PS 2 Performance Standard for Wood-Based Structural Use Panels.

In Canada, panels must comply with the Canadian Standards Association's CSA 0325 Construction Sheathing or CSA 0437 OSB and Waferboard. All three standards set maximum values for deflection under load, dimensional stability, and minimum values for strength, stiffness and lateral nail loads.

Structural Grades and Dimensions

One of three grades-sheathing, Structural I Sheathing' and Single Floor-will be stamped. Sheathing is for use in construction applications, such as covering material for

One glance at the certification

stamp will confirm key requirements for dealers, specifiers and builders, roofs, subfloors and walls. Structural I Sheathing is a sheathing panel that meets additional requirements for cross-panel strength and stiffness. Single Floor is for use as a combination subfloor and underlayment.

Next to the grade will be numbers for panel thickness and span rating, indicating allowance for roof and floor spacing respectively.

Bond Durability Classification

One of two exposure categories-Exterior or Exposure l-determines where panels can be used. Exterior panels, fully waterproof, are designed for permanent exposure to the weather. Most OSB panels are classified as Exposure l, suitable for panels that are not pernanently exposed to the weather yet must resist effects of high humidity and moisture during construction delays.

To order OSB panels, the dealer, specifier or builder should designate thickness, trademark grade, span rating' bond durability classification, dimensions, "square edge" or "tongue-and-groove" as desired for thicker panels and number of pieces. One glance at the certification stamp will confirm key requirements.

Louisiana.Pacifie

Portlafld, Or.

18 plants: Hanceville, Al.; Dawson Creek, B.C.; Montrose, Co.; Athens, Ga.; Houtton, Me.: Sagola, Newberry, Mi.;Two Harbors, Mn.; Hayward, Tomahwk, W.; Swan Valley, Manitoba; Roxboro, N.C.; Jasper, Silsbee, Carthage, Tx.; Bois-Franc, St.-Michel Oes Sainls, Chambord, Quebec.

*2000 figures, unlike 2001, do not include spocialty plants.

Weyerhaeuser Co.

Federal Way, Wa.

10 planls: Drayton Valley, Edson, Slave Lake, Alberta; Grayling, Mi.; Elkin, N.C.; Sutton, W.V.; Wawa, Ontario; Miramichi, New Brunswick; Hudson Bay, Saskatchewan, Arcadia, La.

EcTl"';l;l'cificcor*

7 plants: Brookneal, Skippers, Va.; Dudley, N.C.; Grenada, Ms.; Mount Hope, W.V.; Woodland, Me; For{ce, Ar.

Norbord Industries

Toronto, Ontario

9 olants: La Sarre, Val-d'Or, Quebec; Bemidji, Mn.; Guntown, Ms.; Joanna, S.C.; Huguley, Al.; Nacogdoches, Jefferson, Tx.; Cordele, Ga.

Huber Engineered Woods

Charlote. N.C.

4 plants: Commeffi, Ga; Ea$ton, Me.; Crystal Hill, Va.; Spring City, Tn.

Grant Forest Products

Englehart, Ontario

3 plants: Englehart, Timmins, High Level, Ontario.

Potlatch Corp.

Spokane, Wa.

3 plants: Bemidii, Cook, Grand Rapids, Mn.

Ainsworth Lumber Co., Ltd.

100 Mile House, B.C.

3 olants: 100 Miile House; Grand Prairie, High Level (50% partnership w/ Grant Forest Products), Alberta.

Tolko Industriee

High Praide, Aherta

1 plar* High Prairie.

Slocan Group

Bichmond, British Columbia lJhng Barwick, Onbrio.

1 olant: Fort Nelson, B.C.

1 olant: Morrow.