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Oriented Strand Board (OSB) Class Action: About Oriented Strand Board (OSB)

Oriented strand board, or OSB, is an engineered wood product formed by layering strands (flakes) of wood in specific orientations. In appearance it is has a rough and variegated surface with the individual strips (around 2.5 by 15 cm each) lying unevenly across each other in the direction of their grain.

It is manufactured in wide mats from cross-oriented layers of thin, rectangular wooden strips compressed and bonded together with wax and resin adhesives (95% wood, 5% wax and resin). The layers are created by shredding the wood into the strips, these are sifted and then oriented on a belt. The mat is made in a forming bed, the layers are built up with the external layers aligned in the panel direction and internal layers randomly positioned. The number of layers placed is set by the required thickness of the finished panel, typically around a 15 cm layer will produce a 15 mm panel thickness. The mat is then placed in a thermal press. Individual panels are then cut from the mats in standard sizes.

Different qualities in terms of thickness, panel size, strength, and rigidity, can be given to the OSB by changes in the manufacturing process. OSB panels have no internal gaps or voids, and are water-resistant (though they do require additional membranes to achieve impermeability to water). The finished product has similar properties to plywood, but is uniform and cheaper. It has begun to replace natural plywood in many environments. The most common uses are as sheathing in walls, floors, and roofs.

While OSB does not have grain like a natural wood, it does have a specific axis of strength. This can be seen by looking at the alignment of the surface wood chips. The most accurate method, though, for determining the axis of strength is to examine the ink stamps on the wood placed there by the manufacturer.

There is some debate over the environmental impact of OSB. On the one hand, it allows producers to use tree species that are otherwise unfit for standard veneer plywood or lumber -- species like aspen or poplar. The production method uses almost all the wood of the harvested trees and both small, young trees and lower quality fast growing species can be used. However, the manufacturing process requires the use of a variety of deadly volatile compounds including formaldehyde.

Because natural plywood is made of layers with alternating grain directions, it can be difficult to cut. OSB, while lighter and easier to cut than the natural equivalent, leaves a gummy residue on saw blades from the waxes and adhesives used during manufacturing. In 2001, 19.4 million m³ of OSB panel was produced in the USA.

OSB is commonly known as Sterling board in the United Kingdom.

(From Wikipedia, used under terms of GNU Free Documentation License)

If you purchased OSB in the United States DIRECTLY from Louisiana-Pacific Corp.; Weyerhaeuser Co.; Georgia-Pacific Corp.; Norbord Inc.; J.M. Huber Corp.; Ainsworth Lumber Co.; or Potlatch Corp. at any time from June 1, 2002 to the present., you are urged to contact us immediately to protect your legal rights. Please call the law offices of Alexander Hawes, LLP at 800.921.1776 to speak to an attorney. The call is free, and there is no obligation. You may also email us below. Act now, as delays can harm your case.

On the other hand, if you fail to protect your legal rights now, you may lose the right to be compensated for your harm. (Persons seeking to preserve any potential legal claims should contact an attorney promptly, since all states have mandatory time periods in which lawsuits must be filed with the courts; otherwise, they may be forever barred).

Our firm has a great deal of experience in representing plaintiffs in “class action” and "anti-trust" cases.

In addition, we have the resources to handle our own cases. This means that when you call our firm, you talk to your own lawyer who has been assigned to your own case.

Please contact us now. The secure form below only takes a couple of minutes to fill out, but if you are uncomfortable sending your information over the internet, please call our toll-free number at 800.921.1776 to immediately speak to an attorney. The call is free, and there is no obligation. Act now, as delays can harm your case.

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