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Have questions? Please give us a call at (323)-433-1540. We are open M-F 8:30am-4:30pm PST
Have questions? Please give us a call at (323)-433-1540. We are open M-F 8:30am-4:30pm PST

Pond Underlayment

71 reviews

Product Weighs: 3.0 lb

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Add extra protection and peace of mind to your pond, your investment. If you would like to order a piece longer than 5ft, please click the drop down arrow to your right. 

  • Increases pond liner life and is quick and easy to install.
  • Protects from sharp objects and prevents ground under liner from over-stretching. 
  • Made from 100% polypropylene non-woven material, will not mildew and is resistant to damage from insects and rodents. 
  • Material weight: 4.5oz


*Width is always 15ft wide. Pieces can be overlapped and come cut to help with placing. 

How to Determine the Size Underlayment You Should Buy:

1.) Determine the total sq ft of your pond liner: Example 20'x30' = 600 sq ft

2.) Divide the total sq ft of your liner by 15 (this is the width of the rolls they come on): Example 600 sq ft / 15 = 40 

Example: You would need to purchase a 15'x40' underlayment 

Customer Reviews
4.9 Based on 71 Reviews
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Matthew H.
United States United States

The underlayment is impressive

So I bought the pond liner because they recommended it- didn't know if it would be worth it or not but wasn't a terrible amount of money. Boy it was an impressive product. It felt almost as thick as craft store felt, but made from some type of polypropylene or similar. I first tried to cut it with a brand new utility knife and couldn't get the blade in (yay, though it led to a brief panic), oddly cut perfectly fine with scissors.

Bilal G.
United States

Underlayment was good, liner was torn and seemed

The underlayment was a good purchase, however the liner i bought from this store was not the advertised size - had a seem in the middle that had a hole and a rip in it. Unlikely I'd buy from this store again for that reason

Tom S.
United States United States


This purchase went perfectly smoothly. The liner was sent in a timely manner and it is exactly what I expected. Thanks!

Adrian D.
United States United States

Happy customer

Just purchased an underlayment and 10x20 epdm liner. Shipment arrived fast and very happy with order. I would definitely recommend their service.



Hi Adrian, thank you for your review, and thank you for trusting us with your project. It's always great to hear when our customers have a good experience working with our team.

William N.
United States United States

Service after the sale got the lost product to me.

Very Good Service after the sale.



Hi William, Thank you for your review. I hope that your install went smoothly and you're enjoying your new waterfront property!