Y HOMES Councilor LOG HOMES Leaders b Excellence PRODUCT SPECIFICATIONS For 2 x 6 Tongue and Groove Description: Kiln-dried spruce or air-dried western red cedar, # 2 grade or better, milled to finished size. Size: 1% thick, 5 47 tall. Details: 4" tongue, 147 groove. V-groove one side, reversible. Coverage: 4 7/8” coverage. Conversion Factor: 2.5 lineal feet = 1 square foot.