base for hen house

i am thinking of moving my small shed to another corner of my run where 1=  i can build a  better secure fence around it as a quanutine pen , 2= the shed will have more shade but the shed doesnt have a base to it so i was wandering if i could use a sheet of strong pvc tpye sheet  i dont know if it came out of a shower cubicle or not but its similar to that would that be a good base or not .

at the mo its based on pallets and under the pallets is the bait box its all blocked in now as my babies are in this smaller shed an run until i feel they are big enough to go with the big girls , i'm just worried my babies are not getting enough shade although they seemed to have coped so far.

thanks nn , its not completely smooth sheet its got a rough pattern on it and also it will have deep bedding on .
i've totally run out of wood and i didnt want to be using pallets again unless i really have to .

it would only be temparory as i am looking at moving the shed anyway i just got to find the man power an thats not easy .

all the feed an drink are in the shade and i am surprise that although they only have little patches of shade the babies are coping very well ,in the run with them is 2 cut down sycamore trees an they are about 1 1/2 high or so an all 4 of the light sussex were up there the other day using it like it was a diving board my god can they fly at 6 weks old or what  i so wish i could get it on video .

one of the babies was panting pretty badly on her first day out side but sarah put my mind at rest  thankfully .

p.s while i am here can i ask what age could they go in with the big girls at mo they are 6 weeks an to me they seem to tiny to go in with them , figured i could add this then to make yet another post .

One year I found a bunch of old pallets to stack our hay on. Usually the bottom bales in a stack are only good for mulch as they absorb moisture from the ground. The pallets were going to solve this.

 They did, not a single bale had rot on it. Instead mice and rats used the space under the stack to stay warm and brood many offspring plus they had tunnels all through the bottom bales. making them worthless till they were composted.

They can squeeze through the smallest gap can't they