AERT. Suitable for installation on patios, verandas, rooftops, or almost any level concrete or gravel surface, EcoShield Deck Tiles are made of a wood-plastic composite that resists rot, decay, moisture, and insects. The tiles contain a minimum of 30% postconsumer and 60% preconsumer recycled content. The tiles snap together for easy, secure installation, and installers can combine colors and patterns for unique designs. The tiles also can easily unsnap for repositioning or replacement. Two sizes and three colors are available. 866.729.2378.