PREPARATION & INSTALLATION
Concrete, Masonry and Tile
The surface should be entirely dust free: high pressure TSP/water wash is the easiest method. The surface must be sealed with a complete coat of paint or concrete sealer and allowed to dry. If the surface is not sealed there must be no loose paint, grit or chalk present.
Sealing porous surfaces creates three benefits:
- Moisture cannot wick to the adhesive surface from within the matrix of the wall.
- Dust due to ablation cannot develop under the vinyl.
- Removal steps are much easier as the adhesive will remove more cleanly and if any adhesive remains, the surface will be cleaned of residue more easily.
The surface temperature must be above 50°F (10°C). To assure the highest adhesion the graphics will benefit from a final installation pass using a soft roller and heat source in combination. The film should be heated to a point of softening. Wait until the vinyl becomes “tack-free” and then roll the film tightly into the texture of the wall.
These surfaces benefit from slightly roughening with sand paper before installation or surface oxidation with flame. For many polyolefinic surfaces, once the oily skin of the plastic is modified bond will improve dramatically.
Addition of heat during removal will make the process much cleaner and faster. Where possible allow the surface to reach 80°F/27°C or more before removing the film. Where ambient temperature is not that high use either a very “soft” flame type torch or heat gun to bring the temperature up. Arlon recommends getting the film and under laying adhesive above 100°F/38°C.