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Equal Design Values

Rosboro RMT is manufactured to meet or exceed the published design values of solid sawn timber of the same size and grade. For example, an RMT timber stamped with “WCLIB Select Structural” will meet or exceed all the published design values for solid timber of the same size. The WCLIB certification is in compliance with the American Lumber Standards.

Rosboro RMT® technical information.

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Rosboro RMT®

Rosboro Manufactured Timber

Rosboro RMTRosboro has created a viable substitute to the grades and lengths of solid-sawn Douglas fir that are increasingly less available. Our manufacturing team has worked with the WCLIB and WWPA to create RMT, a size-for-size, grade-for-grade alternative to Douglas fir timber.

The Attributes of Solid Sawn

How does RMT size up to solid sawn? It's certified under the same lumber grading rules as solid sawn, and is structurally engineered to meet the same stress ratings. RMT is also manufactured to uniform dimensions, so it's completely interchangeable with solid-sawn timber of the same size and grade. Since RMT is a manufactured timber preferred lengths are no problem. RMT is available in a range of lengths up to 60 feet. Because it's kiln dried to a moisture content of less than 15 percent before assembly, it resists twisting, splitting, cupping, and warping, which are common problems with solid-sawn green timber.

Rosboro RMTAdded Job Site Protection

Wrapping the product improves its safekeeping and dimensional stability, which prevents the distortions that often accompany solid-sawn timber that sits unprotected in the yard.

Environmental Attributes

Unlike solid-sawn timber, RMT is made from smaller, faster-growing trees cut from second- and third-generation forests, which provides our customers yet another sustainably minded product option.

RMT Sizes

Net Dry



Net Dry
4 x 8
3-1/2 x 7-1/4
6 x 6
5-1/2 x 5-1/2
4 x 10
3-1/2 x 9-1/4
6 x 8
5-1/2 x 7 1/2
4 x 12
3-1/2 x 11-1/4
6 x 10
5-1/2 x 9-1/2
4 x 14
3-1/2 x 13-1/4
6 x 12
5-1/2 x 11-1/2
4 x 16
3-1/2 x 15-1/4
6 x 14
5-1/2 x 13-1/2
4 x 18
3-1/2 x 17-1/4
6 x 16
5-1/2 x 15-1/2