Heavy-Duty Pond Underlayment, 15' x 20' The Aquascape Heavy-Duty Pond Underlayment 15' x 20' (4.6 m x 6 m) suits large residential pond builds and commercial water feature installations where the pond floor footprint exceeds what narrower pieces can cover without multiple seams. The 300 sq ft (27.9 sq m) coverage handles most large-scale installations with minimal seaming. Spec Value Dimensions 15' x 20' (4.6 m x 6 m) Coverage 300 sq ft (27.9 sq m) Material Non-woven geotextile How to Use Clear the excavation of sharp material. Lay the underlayment over the prepared substrate and conform to the excavation contours. Overlap adjoining sections by 6" (15 cm). Install EPDM liner and fill to seat both layers. Trim excess after the liner conforms to the excavation profile. Ideal for large residential koi ponds over 3,000 gal (11,350 L), commercial water garden installations, and large recreational pond builds where a 300 sq ft section covers the primary pond floor without multiple seam joints.
Checkout happens on the official store. This page mirrors catalog facts in plain HTML for direct reading and crawlability.
