I-PVC iyimpahla yepulasitiki, igama layo eliphelele i-polyvinyl chloride. Izinzuzo zayo izindleko eziphansi, impilo ende, ukubumba okuhle nokusebenza okuhle kakhulu. Iyakwazi ukumelana nokugqwala okuhlukahlukene ezindaweni ezahlukahlukene. Lokhu kuvumela ukuthi isetshenziswe kabanzi ekwakhiweni, kwezokwelapha, kwezimoto, ngocingo kanye nekhebula kanye neminye imikhakha. Njengoba impahla eluhlaza eyinhloko ivela ku-petroleum, izoba nomthelela omubi emvelweni. Izindleko zokucubungula nokugaywa kabusha kwezinto ze-PVC ziphezulu futhi kunzima ukuzigaya kabusha.
I-PU impahla isifinyezo se-polyurethane impahla, into yokwenziwa. Uma kuqhathaniswa nempahla ye-PVC, impahla ye-PU inezinzuzo ezibalulekile. Okokuqala, impahla ye-PU ithambile futhi inethezekile. Ibuye ibe nokunwebeka okwengeziwe, okungakhuphula induduzo nokuphila kwenkonzo. Okwesibili, impahla ye-PU inokushelela okuphezulu, ukungangeni kwamanzi, ukuvikela uwoyela nokuqina. Futhi akulula ukuklwebha, ukuqhekeka noma ukukhubazeka. Ngaphezu kwalokho, iyimpahla ehambisana nemvelo futhi ingasetshenziswa kabusha. Lokhu kunomphumela omkhulu wokuvikela endaweni ezungezile kanye nemvelo. Izinto ze-PU zinezinzuzo eziningi kunempahla ye-PVC mayelana nokunethezeka, ukungangeni kwamanzi, ukuqina kanye nobungane bezempilo yemvelo.