Frequently
Asked Questions About
Pond Liners
Q. Are Just Liners Pond and Water Garden liners aquatic safe?
A. All of our pond liners are aquatic safe. Roofing liners are not recommended for fish ponds.
Q. What is EPDM?
EPDM (Etylene Propylene Diene Monomer) is a synthetic rubber. It is flexible, puncture resistant and offers excellent UV stability. It is easily seamed and patched.
Q. What is Polyethylene?
Polyethylene is a plastic type material that offers good UV resistance. It is stiffer than EPDM. It is more affordable and lighter than EPDM. It can be manufactured in many different sizes.
Q. Which liner material offers the most flexibility?
A. The flexibility order of our liners is as follows:
|
Material
|
Flexibility
|
Pond
Size
|
|
PVC
|
very
flexible
|
any
size pond
|
|
EPDM
|
very
flexible
|
any
size pond
|
|
PPL12
|
flexible
|
Small ponds
|
|
PPL20 & 24
|
flexible
|
any size pond
|
|
PPL30 & up
|
least
flexible
|
any size pond
|
Q. Can I order a liner in any dimension I want?
A. The PVC liners can be ordered in any dimension
as one solid sheet. However,
to reduce waste and keep our prices low, we ask that one side
of your PVC liner is divisible by 6, length or width.The
EPDM liners must be ordered as shown on the EPDM page
of this site. The Polyethylene liners can be ordered in any
dimension as one solid sheet.
Q. Can I order a liner cut in a particular shape?
A. No. All of our liners are fabricated in square,
flat sheets.
Q. How much material overlap do I need?
A. We believe that a 2' overlap is needed for pond edging
and margin of error for first time pond builders.
Q. Do I need the Geo-pad Underlay?
A. Yes. It is a wise decision to purchase the underlay to match
your liner dimensions. It gives your liner longevity, protecting
it from tree roots, rocks, rodents and soil chemicals.
Q. Which liner material is best for me?
A. Consider the following factors before making your
liner material decision.
1. What is the coldest temperature in your area?
|
Material
|
Cold
Crack
|
|
PVC
|
-22°
Fahrenheit
|
|
EPDM
|
-40°
Fahrenheit
|
|
PPL20
|
-70°
Fahrenheit
|
|
PPL24
|
-65°
Fahrenheit
|
PL20
& PPL36
|
-100°
Fahrenheit
|
3. Are you going to penetrate the liner with pipe fittings
or a bottom drain?
|
Material
|
Sealing
Capabilities
|
|
PVC
|
good
|
|
EPDM
|
very
good
|
|
PPL12
|
good
|
|
PPL24
|
good
|
|
PPL20
& PPL36
|
good
|
4. Is your pond excavation in a sunlit or shady area?
|
Material
|
UV
Resistance
|
|
PVC
|
fair
|
|
EPDM
|
very
good
|
|
PPL12
|
fair
|
|
PPL24
|
good
|
|
PPL20
& PPL36
|
good
|
5. Are the soil conditions in your pond excavation rocky, clay
or sandy? Are trees located near your pond?
|
Material
|
Tear
Resistance
|
|
PVC
|
good
|
|
EPDM
|
very
good
|
|
PPL12
|
fair
|
|
PPL24
|
very good
|
|
PPL20
& PPL36
|
ver good
|
Q. If I want to seam two liners together, which material
should I use?
A. EPDM liners can be seamed with minimal effort. EPDM can be seamed by
using the seam prep, tapes and lap sealant. The
Polyethylene liners (i.e. PPL lines) can be seamed using H50 tape in small areas or a heat device for larger areas. PVC can be seamed in small areas using PVC glue and heat welded for larger areas.
Q. If I develop a leak in my liner, which material
is the easiest to patch?
A. EPDM liners can be patched with minimal effort. EPDM is easily patched using our EPDM
patch with adhesive backing and tape activator. The area should be preped with tape activator. The patch adheres to the liner, and
forms a bond stronger than the original material.
PVC can be patched with excess PVC material and HH66 vinyl cement. The PVC material
should be cut in a circular patch and bonded to the liner
using HH66 adhesive . PPL liner can be patched using H50 tape.
Q. What color are your liners?
A. All of our pond liners are black.
