Plywood, particle board, or other sheet material fixed over wooden members.
Wood-based sheets on rafters or purlins, California (A. Charleson)
Plywood sheets over wood rafters or purlins - a roof under construction in Vancouver, Canada (S. Brzev)
Plywood, particle board, or other sheet material fixed over wooden members.
Wood-based sheets on rafters or purlins, California (A. Charleson)
Plywood sheets over wood rafters or purlins - a roof under construction in Vancouver, Canada (S. Brzev)