Exterior walls begin with 1/2 inch plywood being applied directly to the posts, beams, and wall studs. This is covered with a moisture protective membrane (white sheet). Rows of 5/8 inch by 4 inch strapping are nailed on. This adds additional lateral stability (earthquake protection) as additional insulation capacity.
The finishing layer for the first floor will be Western Red Cedar clapboards.
The second floor will receive a fireproof mixture resembling hand applied stucco. This will also be done on the north and south walls due to their proximity to the property lines.
NOTE: Fire protection rules in Japan are very strict.
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