Uma usembonini yokwakha noma uhlela ukuvikela indlu ekushiseni, kungenzeka ukuthi uke wahlangana negama elithi "water vapor permeability" (WVP). Kodwa iyini ngempela i-WVP? Kungani kubalulekile lapho ukhetha izinto zokuvikela ekushiseni?
Ukuvunyelwa komoya wamanzi (i-WVP) kuyindlela yokulinganisa ikhono lezinto ezibonakalayo lokuvumela ukudlula komhwamuko wamanzi. I-WVP iyisici esibalulekile okufanele sicatshangelwe uma kukhulunywa ngokufakwa komoya njengoba ithinta ukusebenza okuphelele kokufakwa komoya ekugcineni indawo yangaphakathi ekhululekile neyonga amandla.
Izinto zokuvala umoya ezine-WVP ephansi zingavimbela kangcono ukwakheka komswakama ngaphakathi kwezindonga nophahla lwesakhiwo. Lokhu kubalulekile ngoba umswakama ophezulu ungaholela ekukhuleni kwesikhunta kanye nomonakalo wesakhiwo ngokuhamba kwesikhathi. Ngakolunye uhlangothi, izinto ezine-WVP ephezulu zivumela umswakama owengeziwe ukuthi udlule, okungaba wusizo ezimweni ezithile lapho kudingeka khona ukuphathwa komswakama.
Ngakho-ke, ungayithola kanjani i-WVP yezinto zokushisa? I-WVP yezinto ngokuvamile ilinganiswa ngamagremu ngemitha yesikwele ngosuku (g/m²/ngosuku) futhi ingahlolwa kusetshenziswa izindlela ezijwayelekile ezifana ne-ASTM E96. Lezi zivivinyo zihilela ukuveza izinto ezimweni zomswakama ezilawulwayo kanye nokulinganisa izinga lapho umhwamuko wamanzi udlula khona esampula esikhathini esithile.
Uma ukhetha izinto zokuvikela ukushisa zephrojekthi, kubalulekile ukucabangela isimo sezulu kanye nezidingo ezithile zesakhiwo. Isibonelo, ezindaweni ezibandayo lapho kudingeka khona ukushisa cishe unyaka wonke, kubalulekile ukukhetha ukuvikela ukushisa nge-WVP ephansi ukuvimbela ukwakheka komswakama kanye nomonakalo ongaba khona esakhiweni sesakhiwo. Ngakolunye uhlangothi, ezindaweni ezishisayo nezinomswakama, izinto ezine-WVP ephezulu zingakhethwa ukuze kufezwe ukuphathwa komswakama okungcono futhi kuvinjelwe ukuminyana ngaphakathi kodonga.
Kunezinhlobo eziningi zezinto zokuvikela ukushisa emakethe, ngayinye inezici zayo ze-WVP. Isibonelo, izinto zokuvikela ukushisa ze-foam ezifana ne-polyurethane ne-polystyrene ngokuvamile zine-WVP ephansi, okwenza zifaneleke ukusetshenziswa ezindaweni ezibandayo nezimanzi. Ngakolunye uhlangothi, i-cellulose ne-fiberglass insulation zine-WVP ephezulu, okwenza zifaneleke kangcono ezindaweni ezishisayo nezinomswakama.
Ngaphezu kokucabangela isimo sezulu, indawo kanye nokusetshenziswa kokufakwa ...
Ekuphetheni, ukuvunyelwa komoya wamanzi (i-WVP) kuyisici esibalulekile okufanele usicabangele lapho ukhetha izinto zokuvikela ukushisa zephrojekthi yokwakha. Ukuqonda izakhiwo ze-WVP zezinto ezahlukene nokuthi zithinta kanjani ukuphathwa komswakama kanye nokusebenza kwesakhiwo sonke kubalulekile ekuqinisekiseni indawo yangaphakathi ekhululekile neyonga amandla. Ngokucabangela isimo sezulu sakho esithile, indawo, kanye nokusetshenziswa kokuvikela ukushisa, ungenza isinqumo esinolwazi mayelana nokuvikela ukushisa okungcono kakhulu kwephrojekthi yakho.
Isikhathi sokuthunyelwe: Feb-19-2024
