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Pool Vacuum Cleaner Head - Like a Floor DrainView Instructable »
HiThank youYou can find same films on your country:https://www.google.hu/search?biw=1918&bih=939&tbm=isch&sa=1&q=hand+stretch+film&oq=hand+Stretch+Film&gs_l=psy-ab.3.0.0i19k1l2j0i7i30i19k1.9212.9898.0.12305.5.5.0.0.0.0.96.4188.8.131.52....0...1.1.64.psy-ab..0.5.424...0i13k1j0i7i30k1j0i8i7i30k1j0i8i7i30i19k1.0.aEyLBEe8vm4
Yes, just the two foil stick together. No need glue, screw, nail, rope etc. Just adhesive tape.
Stretch Film Greenhouse (Or Any Other House)View Instructable »
Yes this is an industrial material. You can find same strong foils in an workshop where made Truck tilt or tents.Or you should find any strong material in your territory.You can use strong but not waterproof material too, then you cotton inside with waterproof normal foil. The can go inside the soil.
Here is the system. All parts from Aliexpress. the water pump about 12 USD. At beginning must perfect set up the dropping, then goes automatic with an timer switch. https://youtu.be/Xu0DqCwKKi4
I dont said aluminium :)
I dont know what material do you mean. If it is strong enought, then can you use.
Modular Vertical Garden.View Instructable »