Since plastic doesn’t biodegrade, why aren’t more houses built with plastic instead of wood parts?

Question

Since plastic doesn’t biodegrade, why aren’t more houses built with plastic instead of wood parts?

In: Engineering

Answer 1

Long pieces of plastic which are strong enough to support a house are pretty expensive and heavy; it’s easier and cheaper to build a wood frame and then wrap the whole structure in thin layers of waterproof plastic + other waterproof materials to keep everything dry.