oy vei.... i'm tired.... and feeling pretty lazy right now. i am not going to make a statement bold enough to say that there isn't a material out there that contains particles that may rust, there may be and i'm not going ot go and look through all of the data i have from every vinyl manufacturer. The regular issue is that occurs is that many of the films have a laminate that traps fluid underneath (unlike regular cast and calendared) which will eventually allow the fluid to work itself out.
The problem that you see (the black'nasti'ness) is not rust it is mold. I have been working with a chemist for years and we developed an application fluid that will allow you to install reflective, metallics, etc. without the 'mold' issue. however, the politics became much bigger than I ever could have imagined...and many manufacturer's would rather installers install dry just to avoid the potential of failure from hack installers who are not capable of installing properly wet or dry. As a result though a couple companies did incorporate specific properties that were in the application fluid that we developed and included those elements into their adhesives so that IF you were to disregard their application instructions mold would be unable to grow, unfortunately contractually I can not reveal which adhesive manufacturing / vinyl companies purchased these rights. It is my hope that someday they will also make the application fluid available that will allow you to install metallics, reflectives, etc., with out issue because it is available.
During development many members of this forum tested the various fluids as they evolved and I know of no one that had any complaints and found it to be FAR superior to what is currently on the market.
In an ideal world it could be sold SIGNIFICANTLY cheaper as a concentrate (so as not to ship "profital" / the chemical industry word for h20) however, this would require that everyone used distilled water because the ph varies more than I imagined throughout the country.
If someone is intrerested in pursuing this project, taking it to market, self distributing, whatever...let me know...it's another one of those projects I would love to see something happen with because there is great potential and it is better than ANYTHING else I have ever used...but unless a national distributor or a REALLY motivated individual has an interest I dont have the energy to peddle wetapp by the gallon.
It is completely professionally formulated (by a REAL Chemist lol), tested by REAL professionals in the sign industry, and everytime any of my local sign friends need application fluid they come take another bottle (and no I don't mix it up here...the real chemist does
...and it doesn't have that funky chemical vanilla smell either...
anyone with big dreams, loads of energy, who needs a new project ... let me know...