Within 500 m of Okinawa's coastline, airborne salt is roughly 10–20 times that of Tokyo. Typhoons make direct hits several times a year, sometimes with peak gusts above 60 m/s.
Having watched imported timber-framed trailer homes rot away in five years, Park Homes Okinawa arrived at a steel specification designed for Okinawa.
Okinawa's sea breeze is steel's greatest enemy. Ordinary anti-rust paint covers only the surface, so oxidation creeps in through scratches and bolt holes and rust appears within a few years. What Park Homes Okinawa uses,Hot-dip galvanizing, immerses the steel entirely in a molten bath held above zinc's melting point (about 420°C), atabout 450°C, forming an even zinc coating not just on the surface but inside and right through the holes.
Painting, welding or drilling afterwards would damage that coating. So at Park Homes Okinawa wecomplete all frame assembly, machining and drilling first, then take it apart again, transport it to a dedicated plant and hot-dip galvanize it. It means doing the work twice, but not skipping this step is the foundation of 20-year durability.
Window sashes have two performance standards: wind-pressure resistance (S grade) and watertightness (W grade). The Japan Sash Manufacturers Association recommends S-4 or higher in typhoon-prone regions. Typhoon No. 15, which caused severe damage in Chiba Prefecture in 2019, had peak gusts of 57.5 m/s — beyond the upper limit of the S-3 equivalent. In Okinawa this can happen almost every year.
Park Homes Okinawa fits every unit withwind pressure S-4 or higher and watertightness W-5 as standard. At no extra cost. What other makers add on as an “Okinawa option” is built in from the start.
After moving to Okinawa, President Sakata watched the imported timber-framed trailer homes he had previously sold deteriorate rapidly under salt damage and typhoons. “Timber does not last five years in Okinawa.” That experience led to the decision to manufacture in-house, in steel.
Today Park Homes Okinawa builds every unit withsteel framing, designed for a 20-year real service life. Only when hot-dip galvanizing, S-4-or-higher sashes and the Okinawa-spec design philosophy come together does that 20-year figure become real.
“Timber does not last five years in Okinawa. Then we have to build them ourselves.”
— with that resolve, he set up a factory in Tomigusuku City.
Craftsmen who know Okinawa's climate inside out build each unit at our Tomigusuku City factory. The biggest benefit of local manufacturing comes after delivery: if something goes wrong, we can respond quickly. Factory viewings are available any time (by prior appointment).
864-14 Onaga, Tomigusuku City, Okinawa 901-0223
People often tell us that seeing one in person changes their whole image of a trailer home.
Viewings are free and by prior appointment. Just get in touch.