Izinto ezinamathelayo ezingangeni manzi ezigoqiwe wuhlobo lwezinto ezingangeni manzi ezenziwe ngetiyela yenjoloba ezinamathelayo elungiswe nge-SBS nezinye irabha yokwenziwa, i-tackifier kanye ne-asphalt yezinga eliphezulu ye-petroleum yomgwaqo njengento eyisisekelo, ifilimu ye-polyethylene eqinile futhi eqinile noma i-aluminium foil njengedatha yendawo engaphezulu, kanye ne-silicone ecwebezelayo ehlanganiswe nephepha noma i-silicon ecwebezelayo idatha yokuvimbela i-anti-adhesive.

Iwuhlobo olusha lwempahla engangeni manzi enethemba elikhulu lokuthuthuka. Inezici zokuguquguquka kwezinga lokushisa eliphansi, ukuziphilisa kanye nomsebenzi omuhle wokubopha. Ingakhiwa ekamelweni lokushisa, isivinini sokwakha ngokushesha futhi ihlangabezane nezidingo zokuvikelwa kwemvelo. I-asphalt ye-asphalt enamathelayo engangeni manzi impahla egoqekile enamathelayo iyinto enamathelayo engangeni manzi ene-resin ephezulu yamangqamuzana kanye netiyela lekhwalithi ephezulu njengesisekelo, ifilimu ye-polyethylene kanye ne-aluminium foil njengedatha yokubukeka, kanye nongqimba lwesithiyo sokuhlukanisa.
Umkhiqizo unomsebenzi oqinile wokubopha kanye nokuziphilisa, futhi ulungele ukwakhiwa endaweni yokushisa ephezulu nephansi. Ingahlukaniswa ibe yi-self-adhesive yamasondo kanye ne-self-adhesive engenathayi. Isondo lakhiwe ngezinto ezizinamathelayo ezingaphezulu neziphansi ezizinamathelayo ezihlanganiswe nesisekelo sesondo. Isembozo esingaphezulu yifilimu ye-vinyl futhi isembozo esingezansi yifilimu kawoyela ye-silicone exebukayo. I-self-adhesive yamahhala yethayi yakhiwe nge-self-adhesive, ifilimu ye-vinyl ephezulu kanye nefilimu ephansi ye-silicone yamafutha.
Umkhiqizo unomsebenzi omuhle wokumelana nokushisa okuphansi. Iwulwazi olungcono kakhulu olungangenwa amanzi, oluvikela umswakama kanye nedatha yokuvala yesitimela esihamba ngaphansi komhlaba, umhubhe nendawo yokusebenza eshisayo. Ibuye ilungele ubunjiniyela bepayipi obungangeni manzi kanye ne-anti-corrosion. Asikho isidingo sokunamathela noma ukushisisa ukuze kuncibilike. Vele udabule ungqimba lwesithiyo futhi lungaboshelwa ngokuqinile kungqimba olungezansi. Ukwakhiwa kulula futhi isivinini sokwakha sishesha kakhulu.