Underlayment shields pond liners from puncture by rocks or roots
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Pond underlayment protects pond liner against punctures and tears
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Durable, clean, and safe material to install under your pond liner
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Non-woven needle punched fiber underlayment helps extend the life of your pond
Non-woven needle punched 6 oz fabric underlayment provides the first line of defense against liner puncture and tears. Place under pond liner during pond construction as a barrier against rocks or roots to prevent costly and time-consuming repairs. Also cushions the pond wall for fish. Easy to use and installs in minutes. Use instead of cardboard, newspapers, or old carpet padding to help extend the life of your pond liner.
Benefits:
Helps prevent holes and leaks in liner
Provides a stable and lasting foundation
Can be used in any type of pond
Environmentally-safe
Virtually indestructible
Helps extend the life of your pond
How to Calculate Underlayment Size: To determine the necessary dimensions for the underlayment, start with the desired length, width, and depth of your pond. Then add twice the desired maximum depth to both the length and width. Include an additional 1-1/2 to 2 feet to each of these figures to provide enough overlap.
For example: For a finished pond that measures 7' long x 7' wide x 1 1/2 ft deep, you'll need a 12' x 12' piece of underlayment.
7 ft (length) + 3 ft (depth x2) + additional 2 ft = 12 ft Length
7 ft (width) + 3 ft (depth x2) + additional 2 ft = 12 ft Width
Please click on "More Information" for installation tips.
Tips on installing pond underlayment:
It is a good idea to use an underlayment under any lined pond to prevent punctures and leaks from developing. If your liner leaks, you will need to tear down your pond and start over. In the past old carpet, newspaper, felt, or even polyethylene bags have been used underneath the pond liner. However, commercial underlayment are now readily available, easy to use and install, and is the preferred product to use.
Make sure to remove all stones protruding materials because they can cause punctures in the liner. Putting a firmly-packed layer of sand about 2 inches deep beneath the underlayment provides additional protection against punctures or tears in the liner.
Remember to take your time and do it right the first time. Buy the best liner you can afford and don't forget the underlayment to protect the fragile lining.
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