let me explain our method of applying proof coating so it looks like factory-we don`t use the sprayable proofcoat-we use the brushable one which is really thick like body filler almost. then we get out our sika gun that loads up sausages of sika and connects to an air line which compressors the tube through the nozzle and sends it out with no air-just pressurized proofcoat. yes it takes ages to refill a used empty sika tube with brushable proofcoat. there is no overspray because there is no air. the fade out is about 1/2 inch with adjustments to the gun. and thick!!
all the best
frank.