Compare ! Quazite ® Precast Polymer Concrete Plastic Pads Materials Sandwich construction using polymer concrete and manmade, closed cell core that is not subject to water absorption, decay or infestation. The mounting surface is over 1/2" thick reinforced polymer concrete for stability, security and long life. Sandwich construction with plastic skin over wood and foam OR foamed plastic throughout. Commonly the mounting surface is 1/16" or less of injection molded or thermoformed plastic. Water Absorption Closed cell material tested to ASTM D-570. Any crack or void in the thin shell can lead to extensive moisture absorption. Freeze/thaw problems may occur when water is trapped in foamed plastic or wood cores. Rotting of wood core reduces pad strength. U.V. Resistance Polymer concrete is naturally UV resistant throughout - no special additives or treatment are required. Tested to ASTM G-53. Exposed plastic surfaces require special additives or coatings for UV protection - brittleness and fading are common effects of sunlight on plastic. Product Performance Testing in excess of Western Underground Committee 2.15 provisions ensures a solid and stable equipment base. Equipment remains secure even with substantial erosion under the pad, unaffected by string trimmers and lawn equipment impacts. Plastic or wood construction may expose wires and cables. Thin skinned surface is susceptible to impact damage. Flexible pads require full soil support to remain secure. Easily damaged by lawn maintenance equipment. Retrofitting Two-piece SPLITT-PAD® separated at the throat is available to keep services on-line. One piece pads require service outages during installation. Production Cast in precision molds to ensure product consistency. Thermoformed to seal core or injection molded. Colors Standard colors available to match landscaping, etc. Polymer concrete retains color for the life of the product. Commonly fades due to weathering and sunlight. Anchorage Polymer concrete design eliminates the need for anchoring in most applications. Handhole or corner anchor plates are often required by manufacturers which increases cost and installation time. Cost Lower maintenance and increased stability reduce life cycle costs. Low initial cost may be offset by the high cost of anchorage systems and frequent replacement costs due to damage or distortion.