Pond Liner/Underlayment

Shop Pond Liner/Underlayment at Protopond.com when you need protective underlayment for cushioning pond liner against stones, roots, rough soil, and uneven excavation surfaces. Overlap underlayment sections where needed and remove sharp debris before placement. It is a cushioning layer, not a replacement for liner, and both materials should cover the pond floor, shelves, walls, and transitions without stretched corners. Size them from finished dimensions plus twice the maximum depth in each direction, then add an edge allowance for anchoring. On rocky sites, padding may be wise beneath heavy boulders or equipment. Browse today.

Sort by:

EasyPro: 45 mil DuraLiner Large Pond Liner
Sale price From $800.00

SATISFACTION GUARANTEED

We partner with the most reliable, quality manufacturers in the pond industry to ensure satisfaction for our customers every time.

EXPERT SUPPORT

At ProtoPond we employ industry experts to guide our customers with candid, consultative advice. Reach out today to speak with one of our team members!

FREE SHIPPING

We offer free ground shipping on orders over $99 to the Lower 48 United States. For orders under $99, overnight shipping, or international shipments, please reach out for a custom quote.