I am getting a good deal on some Iroko that I am going to use to replace my deck boards. My deck is about 110 feet long and 6' deep, and the iroko boards are 6' long.

My question is would it be better to have the iroko milled to a tongue and groove pattern for the decking, or just an eased edge S4S pattern? Personally I would prefer the Tongue and Groove look.

Thanks-

Marty