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Have questions? Give us a call: 323-433-1540
Have questions? Give us a call: 323-433-1540

Pond Underlayment

45 reviews

Ships out within 2 business daysThere may be some delays in delivery due to COVID-19, rest assured, your order is on it's way!

Pond liners are heavy, but we guarantee the best shipping rates available.

Product Weighs: 3.0 lb

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Add extra protection and peace of mind to your pond, your investment.

  • 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: 7oz


*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
5.0 Based on 45 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.

Jeremiah C.
United States United States
Just like they said

Of course it's heavy, so hard to move n such, but it was folded nice as was the underlayment, the whole process went smooth with 1 adult and 2 kids helping spread it out !

John D.
United States United States
30 mil RPE

The 30 mil RPE is great to work with and it folds on itself very easily. It cuts easily with a razor blade knife. The material came on time and was just what I ordered. Thanks!

Jim D.
United States United States
Excellent Customer Service

Christopher provided excellent customer service through the whole process. We had a small issue with the shipping company and he resolved the issue an a timely manor. The over all experience was excellent. Thanks guys we will use you again in the future.

Kristen M.
United States United States
Super fast

The delivery was super fast. The had the best price including shipping, and the liners are high quality and easy to install for a diyer