LemTec™ Tank Cover utilizes a patented floating LemTec™ Modular Insulated Cover consisting of individual casings of closed-cell extruded polystyrene insulation encapsulated by two sheets of durable, 10 year UV-resistant, high density polyethylene (HDPE) geomembrane.  Individual casings are laced together during installation to form a complete cover over the liquid in the basin. The cover offers insulation R-factors ranging from 10 to 30 and a geomembrane capable of withstanding even the most severe environmental conditions. Each cover is custom built, therefore fabricated to conform to any tank size or shape. LemTec™ Tank Cover offers a cost-effective alternative to aluminum and fiberglass domes that typically require venting, recirculation systems and explosion-proof motors. Typical applications include equalization, aeration, contact stabilization and sludge digestion tanks.