Spray-Lock ® FRP Spray Adhesive bonds approved wall material for commercial and residential applications. Material must be structurally sound for use in commercial or residential applications. Spray-Lock ® FRP uses 60% less adhesive than traditional trowel-on adhesives. Spray-Lock ® FRP increases productivity with a faster application rate, saving you time and money. SprayLock® FRP comes in easy to use aerosol cans.