ʻO nā ʻano kumu nui o nā mea kumu no nā papa kala i uhi ʻia:
1. ʻO ka pāpaʻi i hoʻopaʻa ʻia i ke kala i uhi ʻia i ke kila
ʻO ka pā kala i hana ʻia e ka pā anu i ʻōwili ʻia he ʻano maʻemaʻe a nani hoʻi, a loaʻa iā ia ka hana hana ʻana o ka pā anuanu;akā, ʻo nā wahi ʻuʻuku liʻiliʻi ma ka ʻili o ka ʻili e hōʻike i ka papa kumu i ʻōwili ʻia i ka lewa, i hiki koke ai i ka hao i hōʻike ʻia ke hoʻohua ʻulaʻula.No laila, hiki ke hoʻohana wale ʻia kēia ʻano huahana no nā ana kaʻawale kaʻawale a me nā mea o loko me nā koi haʻahaʻa.
2. Hot-luu galvanized waihoʻoluʻu uhi kila pā
ʻO ka huahana i loaʻa ma ka hoʻopili ʻana i ka mea hoʻoheheʻe organik ma luna o kahi ʻāpana kila wela-wela ʻo ia kahi ʻāpana kala i uhi ʻia.Ma waho aʻe o ka hopena pale o ka zinc, ʻoi aku ka hana o ka pale ʻana i ka insulating a me ka pale ʻana i ka ʻōpala, a ʻoi aku ka lōʻihi o ke ola lawelawe ma mua o ka pepa wela wela.He 180g/mr ka maʻiʻo zinc o ka substrate galvanized hot-dip (ʻelua ʻaoʻao), a ʻo 275g/m ka mea kiʻekiʻe loa o ka galvanized substrate no ke kūkulu ʻana i waho.