Ideas for a Market Worth Millions
Street art may hang in galleries and fetch fantastic prices at auctions: but the market for graffiti art is worth only a fraction of the expense of removing this spray-on art.
The cost of removing graffiti and posters is believed to amount to more than 500 million euros each year in Germany alone. In the United States, the Department of Justice puts the annual cost at some twelve billion dollars. Walls can be protected with anti-graffiti coatings intended to make the paint and adhesives easier to remove. But until now it has not been possible to combine permanent protection with vapor permeability. SILRES® BS 710 has changed all that.
Anti-graffiti coatings are subdivided into three categories:
Temporary The graffiti protection consists of a "sacrificial coating," which is washed off with the paint. It subsequently has to be applied again.
Semi-permanent The coating consists of a primer plus sacrificial coating. When the graffiti is removed, only the primer remains. The sacrificial coating has to be applied again to replenish the protection.
Permanent The coating remains in place even after the graffiti has been washed off. The protection has to withstand at least 20 cycles of graffiti removal.
Time for a Change of Coat.
Temporary protective coatings generally consist of waxes and saccharides. It is ideally used where the risk of graffiti vandalism is relatively low, or the surface must not be optically altered and should remain vapor permeable. That is the case, for example, on historical buildings and monuments. Permanent coatings are preferably used where sprayers are frequently active. The standard products used here are film-forming. They seal the surface and form a barrier that stops the paint from penetrating. Special detergents are used for cleaning.
A New Class of Protection SILRES® BS 710
With SILRES® BS 710, you can apply permanent anti-graffiti coatings that are open-pored but allow graffiti and posters to be easily removed with water. The coating may be transparent or pigmented, and can be painted over subsequently.
Easy to Apply, Effective Protection
The pictures show how easy and effective it is to use SILRES® BS 710.
Cleaning the Surface
First remove old graffiti, dirt and stickers with a high-pressure cleaner and cold water. Then allow the surface to dry.
Apply SILRES® BS 710
SILRES® BS 710 can be applied with a brush, a roller or a spray gun. Once the surface is no longer tacky, it is completely protected. This takes roughly 4 hours, depending on the climate.
Spraying on Graffiti
Graffiti is sprayed onto a prepared wall. Felt-tip pens can also be used.
Removal of Graffiti
Graffiti paints do not adhere well to surfaces treated with SILRES® BS 710. The paints can therefore be easily removed with a damp cloth or sponge.
Large-area graffiti is most easily removed with a high-pressure cleaner.
Posters and Stickers
Posters and stickers can be easily peeled off. Protection is permanent and does not need to be repeated after each cleaning.
Environmentally Compatible and Permanent
SILRES® BS 710 is a one-component, room-temperature-curing, liquid silicone rubber. The solution can be easily brushed or sprayed on at between 5 and 30°C. On contact with air humidity, the silicone rubber cures from the outside in: After about 4 hours, the silicone film has developed a strong, permanent bond. SILRES® BS 710 uses a silane curing agent and silane adhesion promoter for this purpose. As a result there is no need for tin catalysts or oxime crosslinkers, and the solvent content can be kept low.
Strong through Silicones
SILRES® BS 710 combines two outstanding graffiti protection properties: the silicone rubber shows excellent adhesion to various mineral substrates. It is particularly effective on concrete, brick, plaster, sandstone, lime sandstone and natural stone. But can also be used on wood and coated metal. And it develops a strongly anti-adhesive film, with hardly any affinity for spray paints or poster glues. That is because silicones have much lower surface tension than spray paints or poster adhesives. If treated with primers, even non-mineral surfaces, such as plastics, glass or metal, can be protected.
Other properties typical of silicones also pay off:
- water-vapor permeability The crosslinked silicone film is vapor permeable, and allows moisture diffusion within the facade.
- Temperature Resistance SILRES® BS 710 withstand heat and frost.
- UV and Weathering Resistance The protective effect is not damaged by direct sunlight or heavy rain either.