I'm not sure why it didn't dawn on me to share this, but I've been out a few times collecting pallets and I've found Flooring stores have pallets with sheets of plywood nailed on them. Usually around 38-39" wide to 38-50" long and usually 3/8-1/2" thick... But I just by chance wandered over and looked in their dumpster and I'm finding the same size sheets anywhere from Luan to 3/4" thick and the skids they use that have a channel routed down center for banding across top... The plywood/Luan is around $30/sheet brand spanking so that's gold in my eyes.
Those are great finds. Congrats. Last summer I lucked into getting a number of pallets with solid plywood tops. Everything from that 1/2" to 3/4" plywood. Spent some extra time to take them apart and saved the whole plywood top. They will be great for some future projects.
Those look like some heavy duty skids you saved. Are they 4X4's? They sure look thick in your pictures.
Do your own homework for local laws regarding this [dumpster diving].
Yeah, best to know the local ordinances before you dumpster dive outside of a business.
Last summer I was picking up a bunch of pallets sitting next to a dumpster at our local mall. I thought they were free for the taking as they were on public property alongside the dumpster. But then the store manager comes running out and tells me that I cannot take those pallets because they belong to the store. He said that they needed to return them for credit.
OK, I said, then why do you have them on public property sitting next to the dumpster? Well, he replied, we don't have anywhere else to store them. So, I asked him if he thought it was OK to use public property, by the dumpster, to stage their pallets that they claimed were not trash. Other businesses have designated storage areas on their property to store pallets for return, and I would never take those pallets. Clearly, their pallets were not treated the same as other businesses and they did not even have a sign out there informing people not to take them.
Well, I don't want to cause a problem even when I'm in the right. The manager let me keep the pallets I had already loaded into my trailer. I don't take any pallets from that spot anymore. It's not worth my time to get into a petty argument with the manager. Even when I think they are in the wrong and using public property for storing their pallets next to a dumpster. To me, that's just wrong.
Anyway, lesson learned. After that, whenever I found a new place that had pallets outside by the dumpsters, I would go into the store and ask the manager if I could take the pallets. Every other business that I went to had no problem with me taking pallets staged next to the dumpster. Some places, in fact, were happy to see people take those pallets because the store would get charged to have them hauled out to the landfill, and then they also have to pay a fee for pallet disposal at the landfill on top of that. So, those of us salvaging pallets are actually saving some of those businesses money when we take those pallets.
By the way, at our local mall, the security is so bad that they don't have lights out in the parking lot and they don't even have any security cameras watching the property. How do I know? Because I made a complaint to a store manager about some drifters accosting an older lady for money outside of their store. As I was walking towards the store, the grifter backed off and the lady got in her car and drove away. But I told the store manager that I would in no way let my wife shop at their store if she could not be safe out in their parking lot. That's when I found out that the mall would not turn on the parking lot lights and there are no security camera at all watching the property. The store manager was aware of the problem, he had made a number of complaints, and asked me to file a customer complaint.
I did. Never got any response.
Getting to the point, if you really wanted to take those pallets next to the dumpster, at that business, you would only have to go there when the store was closed, and nobody would ever do anything. If they cannot protect their customers in broad daylight, I doubt much if they will bother protecting their trash sitting outside by the dumpster. Plus, our local ordinance treats anything staged alongside the dumpsters as trash. It's just not worth the hassle for me as I have found other places to pick up pallets for free from businesses that are happy to see me take them.
But the electric cables for heat in the floor burned out in about 7 years. There was a class action lawsuit over the whole fiasco - the wires were supposed to last a lifetime - but I was in the Navy at the time overseas, and when I got to the USA, it was too late to get any compensation for my loss. 
I agree with the others. I have never seen a barn looking that good!
