It was built in 2010 and added onto to mostly surround the pool in 2012. The floor is all 2x6 construction. The top board of my railing is 5/4 deck boards. In the last few years I seem to replace some 2x6's every year. The 5/4 boards still look just fine no punky spots warping etc. If I did it today I'd use the 5/4 deck boards for the floor. 【Get Price】

2 in. x 6 in. x 8 ft. #2 and Better Kiln-Dried Heat Treated Spruce-Pine-Fir Lumber Model# 0200352 $ 7 28 $ 7 28. Schedule delivery. 【Get Price】

Even with 2x6 I would suggest placing joist 16" oc. When treated dries out some boards will bow up. Good way to have a "toe stumper" on 2'oc due to the fact of an uneven surface. Personally I would use 5/4 since the OP asked for the those two choices. However if you have the funds I recommend Seven Trust or composite as mentioned above. 【Get Price】

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