OK, gonna try to resuscitate this thread because it has all the background info for this question. Coop/run will be on pavers, for five chickens... has to be 20 ft from neighboring residences etc.
I had been proposed the idea that putting down hardboard first would protect the pavers from chicken poo and the run from moisture coming from below (haha, as if that matters in Oregon where it rains 9 months a year and moisture is everywhere), and I was on board. But then I read about what hardboard was, and was skeptical. Yesterday I went to the ReStore and the volunteer there seemed to think hardboard was a terrible idea because it would come apart in no time. That’s cool because I was thinking that might be a problem.
So she convinced me to try a piece of Formica instead but said I would need some 2 mil or thicker plastic to put under the Formica so it doesn’t get moisture up under it. I went to Home Depot and the three people I talked to there also thought hardboard was a bad idea. So I walked out with some 3.5 mil plastic that I figured I could fold in half and have 7 mil plastic, to attach to the bottom of the Formica.
Before I do this though I was thinking, do I even really need to put anything down? I think I was confused about what people use as litter in the run versus coop. I have been reading more to clarify and there is so much info out there and so many different litter option so that seem to work. So the DLM might not work in the run in rainy Oregon with pine shavings, but maybe the combo suggested by
@mowin with sand and coarse wood chips, or
@aart using something similar to coarse wood chips. We had a ChipDrop in December so some of that (pine chips, etc) could go in there. It might get a little wet, because we are in Oregon, and it rains in all directions, but the whole coop/run will be roofed with overhang, and protected by the deck so it’s as dry as it will get.
Then if the chickens get down to the pavers they can just sharpen their beaks and I am sure I’ll catch the bald spot within a few days and fill it back in.
Wouldn’t that just be better than a bunch of plastic and Formica down there under the run to deal with? Seems more natural and less likely to hold water somewhere it shouldn’t stay.
Or do you think ultimately even with litter in the run that a bunch of poop is going to get in the paver cracks (which I have redone to fill in any missing sand) and stink horribly or that it will totally ruin the pavers? I mean, the coop might be there awhile (if it all works out). However pavers are replaceable...
I can return the plastic to Home Depot easily and am only out $6 on the Formica panel, so the expenditure is not a concern.
Thanks for any last feedback on this pretty “foundational” detail.