I’m thinking of how to start using waste plastic to replace some furniture in the wood industry, like ply board, purlin and other wood items that are used for construction. Plastic can actually bear weight and stress to hold a roof.
Suggestions are highly welcome.
Project Kamp: Sustainable Construction Methods
Could be a good starting point.
Plastic Grid Beam
There are also several roof tile topics around, just search for them.
We are using plastic bottles stuffed with plastic rubbish