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