Ka rite ki tetahi o nga whakairi whakataetae o te kamupene, kua whakamanahia o maatau miihini whakaheke marama. Ana kua nui te rongonui o te ao, tautautefito ki Amerika ki te Raki, Amerika ki te Tonga, Waenganui rawhiti me Ahia. Ano hoki, ka taea te whakarite kia rite ki o whakaritenga, hei tauira, ka taea te hoahoanga me te rapa, te whakauru, te whakangungu rakau ranei. He rereke nga maimoatanga o te whenua i kowhirihia e koe: I mua i te piauau, Zinc whakakikoruatia, epoxy me Green oti piauau ki te whakatutuki i nga hiahia anticorrosion o to reanga taumata.