ʻOiai ʻaʻole i hoʻopilikia pinepine ʻia ka ʻili mālama pulu a i ʻole ka 'ʻūhū keʻokeʻo' i ka hiki ke pale o kahi uhi galvanized, he mea ʻino ia e maʻalahi ke pale aku.

ʻO ka waiho ʻana o ka ʻili pulu ke hōʻike ʻia nā mea galvanized hou i ka makū e like me ka ua, ka hau a i ʻole ka condensation (ka makū kiʻekiʻe), a noho i kahi me ka palena o ke kahe ʻana o ka ea ma luna o ka ʻili. Hiki i kēia mau kūlana ke hoʻopilikia i ke ʻano o ka hana ʻana o ka patina pale.

ʻO ka maʻamau, hana mua ka zinc me ka oxygen e hana i ka zinc oxide, a laila me ka makū e hana i ka zinc hydroxide. Me ke kahe ʻana o ka ea maikaʻi, hoʻololi ka zinc hydroxide i ka zinc carbonate e hāʻawi i ka pale pale i ka zinc, a laila e hoʻolohi ana i kona wikiwiki o ka pala. Eia nō naʻe, inā ʻaʻohe ea kahe manuahi o ka zinc a noho mau i ka makū, hoʻomau ka zinc hydroxide i ka ulu ʻana a hana i kahi waihoʻoluʻu pulu.

Hiki i ka ʻōpala keʻokeʻo ke ulu aʻe i nā pule a i ʻole i ka pō inā kūpono nā kūlana. I nā wahi kahakai koʻikoʻi, hiki ke loaʻa ka ʻōpala mālama pulu mai nā waihona paʻakai ea i hōʻiliʻili ʻia e omo ana i ka makū i ka pō.

Hiki i kekahi kila galvanized ke hoʻomohala i kahi ʻano ʻili mālama pulu i ʻike ʻia ʻo 'black spotting', kahi e ʻike ʻia ai he mau kiko ʻeleʻele me ka pauka keʻokeʻo a puni paha. ʻOi aku ka maʻamau o kēia ʻano ʻili mālama pulu ma nā kila māmā e like me nā pepa, nā purlins a me nā ʻāpana hakahaka lahilahi. He ʻoi aku ka paʻakikī o ka hoʻomaʻemaʻe ʻana ma mua o nā ʻano maʻamau o ka ʻili keʻokeʻo, a i kekahi manawa e ʻike ʻia paha ke kiko ma hope o ka hoʻomaʻemaʻe ʻana.