Ground cover/footprint materials

[Pucks_poppy]

Hi, I'm wondering about inexpensive materials for ground cover below my platform (which will be hay bale for now). I'm in the wet part of the PNW. Is there any reason not to do billboard tarp? What else should I lay down below the platform in addition?
Thanks.

[Jafo]

I would not lay anything under the platform except maybe some crushed stone if you have any. A tarp will be an ideal places for critters to live such as mice.

[Pucks_poppy]

Hi, thanks for your response. So you are saying that below the hay bales wrapped in tarp, I should only put gravel, and not another tarp, right? How about between the hay bales and the sub-flooring?

[Jafo]

I am not an expert when it comes to using bales. AFAIK people put their flooring right on top of the bales, but I have no experience with that.

[Bob Rowlands]

There used to be a guy that posted here that set his yurt on hay bale. hierony or heirony You might pm him. I have no advice or comments about your question because I haven't done it. Good luck.