Leveled out some concrete blocks and put 4×4 treated beams down. I used 2×3 fence runners spaced one foot apart to support the decking because I used 1/2 inch OSB for the floor
I used OSB instead of treated wood because I have it built up well off the ground and plan to install some metal skirting in the near future.
This Rubbermade shed is 6 years old and it’s the 3rd time I have moved it. The shed is holding up very well with the only signs of age being a little warping from the extreme North Texas heat.