ʻO ka Ppgi Corrugated Metal Roofing e pili ana i ka pā kila i uhi ʻia i ka kala.ʻO ka lau o ka uhi ʻana he pā kila me ka uhi kūlohelohe.Nui nā poʻe e hopohopo nei e mae maʻalahi ke kala ma hope o ka makani a me ka lā.ʻO kaʻoiaʻiʻo, ua kūpaʻa ka pena ma waho o ka tile kila kala.Loaʻa iā ia ka ikaika kiʻekiʻe a me ke kūpaʻa corrosion maikaʻi, nā kala ʻālohilohi a me nā hiʻohiʻona nani.Mai ka makahiki 1999, ua holomua ka mākeke hana kila, a ʻo ka hana ʻana a me ka ʻai ʻana i ka ppgi corrugated sheet ua komo i kahi manawa o ka ulu wikiwiki ʻana, e lilo ana i mea e kū mai ana i kēia lā.