Xa u-Aspresi ozenzekelayo ozenzekelayo usebenzisa i-valtor elungisiweyo yokutshisa ityhubhu ye-Asphalt, i-chimney kwitanki ye-asphalt kufuneka ivulwe kuphela emva kokuba ityhubhu ye-asphalt. Xa idangatye le-herchch likhulu kakhulu okanye lisasazeka, i-ratio speatch kufuneka itshintshwe kuqala, kwaye ipetroli egqithisileyo kufuneka itshiswe ngaphambi kokusetyenziswa.

Ngaphambi kokusebenzisa i-sperchch yombhali ozenzekelayo ozenzekelayo, umbhobho we-oyile kunye nezibuko elikufuphi nezona zikufutshane zivaliwe kuqala. Emva kokuba i-valtorch ephathekayo ikhutshiwe, akufuneki ukuba isondele kwizixhobo ezinokutsha. Ummiselo ozenzekelayo ozenzekelayo kufuneka abe kwisantya esiphakathi xa ulayishe ngokupheleleyo i-asphalt. Ukuba kukho ijika okanye ihlatyiwe, kufuneka icothiswe kwangaphambili, kwaye ukuqhula okungxamisekileyo kuya kuthintelwa kangangoko kunokwenzeka. Inkqubo yokufudumeza ayivumelekanga ngexesha lokuqhuba.