Installing a pond liner can be a straightforward task that can be done efficiently if a few important steps are followed. First consider the two types of high-quality liners: For a large agricultural or recreational pond a reinforced polyethylene liner will offer flexibility, puncture resistance, tear strength and will last 20-25 years when covered or 10-15 years exposed to the sun. For smaller landscape ponds EPDM Rubber liners are ideal for ornamental water gardens including waterfalls and streams. EPDM liners are UV stabilized for 20-25 years when exposed to the sun and natural looking. Secondly the excavation of the pond and the type of soil where the pond is to be built are critical steps to be planned carefully to guarantee success.