Today most experts feel very strongly that engineered films designed specifically for use as vapor retarders should be used as vapor retarders.
Use plastic sheet on raft.
Then a waterproof plastic sheet is laid over the earth and a thin layer of plain cement concrete pcc is poured just to create a perfectly flat and level base for the foundation.
This is a good choice as the cost is minimal and the holes can be easily made or enlarged to accommodate your plants.
Stretch out two sheets of netting.
Polyethylene sheeting under concrete slab under slab vapor retarders play a very important role in retarding moisture from coming up through the concrete and into the structure.
This is something that you could use on a yearly basis it could be anchored somewhere to swim from or it can be used to float down the river or acoss a lake.
Food water edit edit source empty cup 4 empty bottle 6 simple purifier 4 advanced purifier 6 cooking pot 6 sprinkler 12 scarecrow 3.
Polystyrene sheets these are cheap to buy and surprisingly effective in your floating raft system.
Uses edit edit source plastic is used to make.
Form two sausage shaped floaters.
You can purchase huge sheets of these and cut them to fit the size of your tank or tanks.
Secure the garbage bags with duct tape.
Using 4 plastic barrels building a fram around them would make a raft that will maybe out last you.
Plastic can be found floating in the ocean in barrels on vacated rafts and in loot boxes.
And then laying of reinforcement is done on spacers over the foundation bed.
Plastic is used for 18 different items including the raft foundation.