The term "Perfection" refers to all red cedar shingles that are 18", (457mm) in length, in all grades. Perfection shingles are 0.45" (11.4mm) thick, (nominal - all grades). The recommended exposure for an 18" shingle roof is 5-1/2" (140mm) for a 3-ply, water tight construction. 

Western Red Cedar 18" Perfections are the most common shingle and are used in many markets around the world. The biggest market for Perfections are the Northeast states of the US where they have been used on the roofs and walls for over 100 years. They are also used in other markets throughout North America, the Caribbean, the South Pacific, Japan, Korea and Europe.

These 18" roofing shingles are also the raw material used to manufacture the "Re-butted and Re-jointed", (R&R) sidewall shingles and machine grooved shakes. One of the most dominant architectural styles known in North America for many decades, (and enjoying a recent resurgence) is the use of red cedar sidewall shingles along the eastern seaboard in areas such as Cape Cod, Nantucket, Long Island and the like. See our separate catalog section for R&R Sidewall Shingles in The Wood Roof Store.