Panguva yekugadzirwa kwemavara emumugwagwa, zvinodikanwa kupeperetsa marara senge ivhu nejecha pamugwagwa nemhepo inotsikirira mhepo yekuchenesa kuti ive nechokwadi chekuti mugwagwa hauna zvidimbu zvakasununguka, guruva, asphalt, mafuta uye mamwe marara. izvo zvinokanganisa kunaka kwekumaka, uye kumirira kuti nzvimbo yemugwagwa iome.
Zvadaro, maererano nezvinodiwa zvekugadzirwa kweinjiniya, iyo otomatiki yekubatsira mutsara muchina unoshandiswa mune yakarongwa chikamu chekuvaka uye inowedzerwa nekushanda kwemanyorero kuisa mutsara webetsero.
Mushure meizvozvo, maererano nezvinodiwa zvakatemwa, iyo yakanyanya kudzvanywa isina mweya undercoat spraying muchina unoshandiswa kupfapfaidza mhando imwechete uye huwandu hwe undercoat (primer) sekubvumidzwa neinjiniya anotarisira. Mushure mekunge undercoat yanyatsoomeswa, kucherekedza kunoitwa neanozvifambisa-inopisa-yakanyungudika yekumaka muchina kana kufamba-kuseri kwehot-melt yekumaka muchina.
