if it on a vehicle i film laminate. i don't like the spray laminate i believe its crap (my opinion). i dont like liquid lamite also. i have a rule if the print is not going to be exposed to the direct sun i would not laminate unless requested by customers. sun i laminate.i charge premium for lamination. most customers want to change perf after 3 years so no lamination. i am printing with mild solvent not eco. eco only last 1.5 years outdoor before significant fading. mine i get 2.5 years, also i print my perf 8 pass more inks. for more life span. i do do temporary perfs no lamination 1 to 2 pass. also for vehicle i use premium cast 3m over laminate its more easy to install.