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Terms of trade: What is T111?



T111 (also called T1 11, T1 and T1-11) is a sidetrack of laminated plywood or beach board. Its durability makes it a popular choice compared to other forms of wood grooves. T stands for textured, a reference to the grooves cut into the surface.

Created in the 1960s, T111 is made of plywood a little superior to moisture damage than the type manufactured by OSB (oriented beach board, also known as waferboard), because it contains fewer natural grains. Thus, the plywood T111 is a bit spotty, but it also has a more elegant look, as it is often designed with long threads that imitate the appearance of natural wood.

Usually constructed from southern pine, T1

11 is valued for its combination of resilience and flexibility. It's easy to cut, making it convenient to use around tricky roof edges. Despite the lamination, the T111 must normally be treated, either with stain or paint, and requires [flashing] to reliably protect the walls as it covers.


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