Ithayile ye-asphalt ikwabizwa ngokuba yithayile yefayibha yeglasi, ithayile ye-linoleum kunye nethayile ye-asphalt yefayibha yeglasi. Ithayile ye-asphalt ayisiyonto intsha yokwakha engangeni manzi yobuchwepheshe obuphezulu, kodwa ikwayimpahla entsha yophahla yokwakha ingangeni manzi yophahla. Ukukhethwa kunye nokusetyenziswa kwe-carcass kunxulumene kakhulu namandla, ukumelana namanzi, ukuqina, ukumelana nokuqhekeka, ukumelana nokuvuza kunye nezinto ze-carcass. Ke ngoko, umgangatho wezinto ze-matrix uchaphazela ngokuthe ngqo umgangatho wezitena ze-asphalt. Umgangatho kunye nokwakheka kwezithako, ukumelana nobushushu obuphezulu kunye nokumelana nokuguga kwe-ultraviolet kwethayile ye-asphalt kubaluleke kakhulu. I-United States inokumelana nobushushu obuphezulu be-120 degrees Celsius, ngelixa umgangatho waseTshayina ungama-85 degrees Celsius. Umsebenzi ophambili wethayile ye-asphalt, ngakumbi izinto zokugubungela ithayile ye-asphalt enemibala, kukugquma okukhuselekileyo. Ukuze ingakhanyiswa ngqo yimitha ye-ultraviolet, kwaye imibala eqaqambileyo netshintshayo iveliswa kumphezulu weethayile ze-ceramic. Okokuqala, sebenzisa i-28 kuphahla× Ukulinganisa udaka lwesamente olunobukhulu obuyi-35mm.

Iithayile ze-asphalt zophahla oludibanisayo mazibekwe kumjelo ngaxeshanye, okanye icala ngalinye lizakhiwe ngokwahlukeneyo, kwaye mazibekwe kwi-75mm ukusuka kumgca osembindini we-gutter. Emva koko lungisa ithayile ye-asphalt ye-gutter phezulu kwelinye lamacango ophahla uze wandise phezu komjelo, ukuze ithayile yokugqibela ye-asphalt ye-gutter yomaleko idlulele kuphahla olusecaleni ubuncinane i-300 mm, uze ulungise ithayile ye-asphalt ye-gutter ecaleni kwamacango ophahla asecaleni kwaye wandise kwi-gutter kunye nethayile ye-asphalt yomngxuma wokuhambisa amanzi ebekwe ngaphambili, eya kulukwa kunye. Ithayile ye-asphalt ye-trench mayiqiniswe ngokuqinileyo kumjelo, kwaye ithayile ye-asphalt ye-trench iya kulungiswa ngokuyilungisa nokuyivala umjelo. Xa ubeka iithayile ze-asphalt ye-ridge, qala ulungise kancinci iithayile zokugqibela ezininzi ze-asphalt ezibekwe phezulu kwiindawo ezimbini eziphezulu zomngxuma othe tyaba kunye nomngxuma, ukuze iithayile ze-asphalt ze-ridge zigubungele ngokupheleleyo iithayile ze-asphalt eziphezulu, kwaye ububanzi obudibeneyo bee-ridges kumacala omabini omngxuma bufane.