Marka loo eego xisaabinta waaxaha khuseeya, guud ahaan, tuubooyinka birta dahaaran ee polyurethane waxay yareyn karaan kharashka mashruuca qiyaastii 25% (iyadoo la adeegsanayo FRP sida lakabka ilaalinta) iyo 10% (adoo isticmaalaya polyetylen cufnaanta sare sida lakabka ilaalinta).