Tongue and Groove boards are ideal for vertical and horizontal applications, indoor or outdoor. (Not recommended for outdoor floors exposed to rain/snow as drainage is impeded.) :
BBQ/outdoor kitchen skirting & trim
Typicially 5/4x4 or 5/4x6 boards are milled into 0.75" thick T&G boards of approximate face widths of 3" and 5". Square, Microbevel or Full Bevel edge surfaces are available. Various tongue shape/size as well as other milling profiles are available.
Setup fee is $299. This includes packaging and shipping to mill, mill setup, and return packaging and shipping from mill. Oiling all 4 sides with Messmer's UV+ for Hardwoods adds $1.49 per foot.