Ke hoʻohālikelike nei i ka Open-Cell a me ka Closed-Cell Spray Foam: Nā ʻokoʻa koʻikoʻi a me nā noi

ʻO ka huʻa polyurethane i pīpī ʻia (SPF) kahi mea hoʻokaʻawale like ʻole e pili ana i ka hoʻohuihui kemika, a no ka mea ʻaʻole e hoʻololi ka mea i pīpī ʻia me ka huʻa i ka hala ʻana o ka manawa, hoʻohana pinepine ʻia ia i ka ʻōnaehana hoʻokaʻawale o nā hale. Loaʻa iā ia ʻelua mau ʻāpana nui: isocyanates a me ka hui ʻana o nā mea hoʻohui, me nā polyols a menā mea hoʻoulu, i kāwili ʻia ma kahi e hana i kahi papa insulating ikaika. ʻElua ʻano nui o ka huʻa pīpī: ka huʻa open-cell a me ka huʻa closed-cell, kēlā me kēia me nā ʻano like ʻole a me nā hoʻohana.

Huʻa Pīpī Hāmama-Cell

ʻOi aku ka haʻahaʻa o ke kumukūʻai o ka huʻa pīpī puka hāmama a ʻoi aku ka nui o ka hoʻonui ʻia, a hiki ke koho ʻia i ka wā e hoʻopiha ai i nā wahi nui. Ma muli o kona nuika maʻalahi, hiki ke wehe maʻalahi ʻia a hiki ke hoʻopiha ʻia me ka insulation no nā kihi paʻakikī ke hiki. Loaʻa i ka huʻa open-cell kahi ʻano cell e like me nā pehu liʻiliʻi me nā puka e hiki ai i ka ea ke kaapuni. ʻOiai e hāʻawi ana i ka paʻa o ka ea, ʻaʻole ia e hāʻawi i kahi pale makū no ka mea ʻo kona permeability e hiki ai i ka wai ke hele. Loaʻa iā ia kahi waiwai R (kahi ana o kona hiki ke insulate) ma kahi o 3.5 a 3.8 i kēlā me kēia ʻīniha, e kūpono ana no nā noi kahi e pono ai ke kahe ʻana o ka ea akā ʻaʻole pono ke kū'ē i ka makū. Hoʻohana pinepine ʻia ia i nā paia o loko, nā attics, a me nā wahi e pono ai ka insulation leo, ʻoiai ʻo kāna kūkulu puka hāmama e hāʻawi pū i ka hoʻemi ʻana i ka walaʻau maikaʻi loa.

Huʻa Pīpī Kelepona Paʻa

ʻO nā lua i hui pū ʻia e hana i kahi ʻano paʻa aʻe ua kapa ʻia he mau hua huna-kelepona pani. ʻOi aku ka paʻa a me ka paʻakikī o ka huʻa ʻūlū-kelepona pani, e hana ana i kahi pale ikaika e kūʻē i ka ea a me ka makū. ʻO kona mau lua i hoʻopaʻa paʻa ʻia e pale aku i ka ea a me ka makū mai ke komo ʻana, e lilo ia i pale makū kūpono. Hoʻonui ia ma kahi haʻahaʻa ma mua o ka huʻa huna-kelepona wehe, akā hoʻokaʻawale maikaʻi, me ka waiwai R ma kahi o 6.0 no ka ʻīniha. ʻO ke kiʻekiʻe o ka waiwai R, ʻoi aku ka maikaʻi o ka huʻa huna-kelepona pani e kūʻē i ke kahe wela, e lilo ia i mea kūpono no nā noi waho e pono ai nā waiwai hoʻokaʻawale kiʻekiʻe a me ka pale makū, e like me nā kaupaku, nā kumu, a me nā paia. ʻOiai ke kumukūʻai kiʻekiʻe, makemake pinepine ʻia ka huʻa huna-kelepona pani ma nā wahi i kaupalena ʻia ai ka wahi akā pono ka hoʻokaʻawale nui loa.

I ka hōʻuluʻulu manaʻo, he mau mea hoʻokaʻawale maikaʻi nā hua ʻūlū open-cell a me closed-cell akā ʻokoʻa ko lākou mau waiwai a me nā noi. ʻOi aku ke kumukūʻai kūpono o ka hua ʻūlū open-cell, hoʻonui nui aʻe, a ʻae i ka holo ʻana o ka ea, ʻoiai ʻoi aku ka mānoanoa o ka hua ʻūlū closed-cell, hana ma ke ʻano he pale makū, a hāʻawi i kahi waiwai R kiʻekiʻe. ʻO ke koho ma waena o nā mea ʻelua e pili ana i nā pono papahana kikoʻī, me ka pale ʻana i ka makū, ka pono o ka insulation, a me ka waihona kālā.