Blair Shaw Jr wrote:
I no longer use the sprays. On large prints , it often requires the use of an extra pair of hands and accidents occur. I currently use double-sided mounting tapes that come in several widths and serves to add a little air space between the print and the rear papers or board. The Matt board that follows on top completes the sandwich nicely. I can work alone without the fear of the messy sprays and the clean-up that would almost certainly follow.
The Coda cold mount system is what many labs use.