ʻOihana kilahe hale i haku ʻia me nā mea kila, ʻo ia kekahi o nā ʻano nui o nā hale kūkulu. Hoʻokumu nui ʻia ka hale i nā kaola, nā kolamu kila, nā ʻili kila a me nā mea ʻē aʻe i hana ʻia me ke kila profiled a me nā pā kila. Hoʻohana ʻo ia i ka silanization, ka manganese phosphating maʻemaʻe, ka holoi ʻana a me ka hoʻomaloʻo ʻana, ka galvanizing a me nā kaʻina hana pale ʻē aʻe. Hoʻohui pinepine ʻia nā ʻāpana a i ʻole nā ʻāpana e ka wiliwili, bolts a i ʻole rivets. Ma muli o kona kaumaha māmā a me ka maʻalahi o ka hana ʻana, hoʻohana nui ʻia ia i nā hale hale hana nui, nā kahua pāʻani, a me nā wahi kiʻekiʻe kiʻekiʻe. Pilikia nā hale kila i ka ʻino. ʻO ka maʻamau, pono e hoʻopau ʻia nā hale kila, galvanized a pena ʻia, a mālama mau ʻia.