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On the West Coast nearly all residential buildings have a wood frame with plywood on the outside and drywall (gypsum sandwiched between two layers of paper) on the inside.

The decorative/weatherproof finish outside of the plywood is increasingly made with concrete products, which can be made to look like stucco, brick, or even wooden planks or shingles.

The advantages of this sort of construction are that it's inexpensive (wood, after all, grows on trees, which we have plenty of around here), fast (particularly when using nail guns), and doesn't require a great deal of experience or training at the laborer level. It also has good seismic performance and is easy to remodel.

The downsides are that the structure is vulnerable to fire, water, insects, and stray cannonballs.

But in most cases the short lifespan is a good fit for the rapidly changing geography and demographics we have in North America.




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