Also used to seal insulation products in marine and industrial applications to prevent absorption of flammable oil mists, dirt and grease. Hardens, increases density, dust- and waterproofs concrete floors and walls, above or below grade. Particularly effective for poured shuttered concrete structures. Increases compression and flexural strength of concrete. Dries to a barely visible finish to protect in waiting rooms, public offices and other high traffic areas etc.
Posters simply drop of to the ground for normal street cleaning to collect up.