uara pāne karu whakamaru whakaruruhia
He whakamahinga nui te kākano whakararahi āluminihā mō ngā mahere hanganga o nāianei, tuku atu he whaiwhakaaro matihaki mō ngā hiahia whakararahi me ngā hiahia whare. E āheinga ana enei kākano i te utu mai i $4 ki $12 i te kotahi rautau, e rerekē ana i te pūroro, te pai o te whakararahi, me te whaihua o te kawe āki. He pūoro āluminihā kino kaha te kākano i waenganui i te pū whenua whakararahi pai rawa, tukuna mai he pai whakatupuranga huarahi, i te ao rangi R-16 ki R-32. Ko te whakarite utu he whakaatu i ētahi atu take nui, hei hohipera te pūroro (e kitea ana i ngā pū 2, 3, me 4-ika), te momo whakararahi (polyisocyanurate rānei, ko expanded polystyrene), me te pai o te kawe āki. Ko ngā utu whakatakoto e tino whai ake ana i te $3 ki $6 i te kotahi rautau, e hāngai ana ki te whakamātau o te kaupapa me te wāhi. Ka pai enei kākano i te hanga o ngā kauwhata tuhinga pai haere, e whakaiti ana i ngā motuhake utu whakawehenga me ngā utu whakamahana e 40% nei i ngā raraunga whakararahi tawhito. Ko te toitū o te āluminihā, i tōna whakapuakitanga me te hunga whakararahi pai, kei reira he whakararahi e noho ana i te roanga 30-40 tau, me te iti noa iho ngā hiahia whakahaere.