Question: what materials do you need to make a greenhouse?
Answer: Structure. The structure of the greenhouse can be made from aluminum, galvanized steel, wood, or plastic. ... 
Flooring. Typical flooring materials for a greenhouse are concrete, porous concrete, gravel, and dirt. ... 
Cover. ... 
Glass. ... 
Polycarbonate. ... 
Polyethylene. ... 
Fiberglass. ... 
PVC Fabric.