Southern pine decking is produced by S.I. Storey Lumber Co., in 2", 3" and 4" thicknesses in accordance with the recommendations of the American Institute of Timber Construction. It is graded in accordance with the latest edition of the Southern Pine Inspection Bureau grading rules. This decking can also be pressure treated with Osmose NatureWood® ACQ preservative to provide longer life when exposed to conditions which can accelerate decay and permit insect attack.Roof decking is southern pine as manufactured by S.I. Storey Lumber Co., Inc. It is nominal 2 x 6, 3 x 6, or 4 x 6 in #1 or #2 grade and kiln dried. Maximum moisture content is 19% for 2 x 6, 3 x 6 and 4 x 6. Decking is machined to a single or double tongue and groove EVIS pattern.Decking pieces may be of specified length or random length. All layup arrangements except controlled random layup require that the specifier indicate the required lengths. If pieces are for controlled random layup, odd or even lengths 4' to 16' are permitted and they will be end matched.