Standard Pond Underlayment, 7.5' x 300' Roll The Aquascape Standard Pond Underlayment 7.5' x 300' Roll provides mid-width coverage for stream beds, medium cascade sections, and pond installations where the 7.5-foot width covers the application cleanly without the excess material that wider rolls produce in narrower channels. Spec Value Dimensions 7.5' x 300' (2.3 m x 91.4 m) Coverage 2,250 sq ft (209 sq m) Material Non-woven geotextile (standard weight) How to Use Unroll and cut sections to the required width and length. Lay over prepared substrate. Overlap adjacent sections by 6" (15 cm). Install EPDM liner and fill. Trim excess after the liner seats against the substrate profile. A 300-foot roll at 7.5-foot width covers most stream runs from a single source without mid-run splices. For substrates that have been properly cleared of sharp material, standard weight is sufficient; switch to heavy-duty underlayment if the stream runs over hard or rocky ground where puncture risk is elevated. Store rolled and dry to prevent permanent compression. Ideal for medium-width stream beds, wide cascade sections, and small-to-medium pond builds where the 7.5-foot width spans the installation cleanly without excess overhang or multiple narrow seams.
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