15 x 15 Firestone 45 Mil EPDM Pond Liner

I've got a project underway and haven't opened package yet, but as near as I can tell it is as represented. Came on time. All's good.

I was very impressed with the material. I ordered the 15x15 45 mil and it was heavy. I was afraid it would be a pain to work with but it was super pliable and cut like butter with a new razor blade. I have a feeling it will last for years.

After about 25 years my koi pond desperately needed a makeover as I had used an LDPE type liner for it. That liner was so brittle and was not holding water well. I had used this firestone type in a larger pond about 6 years ago and it’s still as flexible as it was the day I put it in. Moving forward I’ll be using this type of liner.

This was a heavy duty liner which was super important as our pond is near our house foundation so no leaks allowed! It was very heavy so I was incredibly grateful that it was folded from the center out. We placed it in the exact center and carefully unfolded it outward to get it in place and this worked like a charm without pulling the underlayment out of place. It was too heavy for me to have moved it easily once unfolded so im really glad the center placement worked. .

This is the best (albeit the most expensive liner I have ever bought having built 10 ponds over the years) but it may well turn out to be the best. Easy to work with, holds water well. Time will tell if it holds up but at least for now very happy. If I have any negatives, I just wish it was a bit less expensive.

This is my second pond project. I used big box store plastic liner on my first one. It was hard to handle in cooler temps, easily damaged and subject to degradation if in direct sunlight. I also had a few places were insects ate holes in it after a few years. This time I decided to spend a few extra bucks and use EPDM. What a difference! This product is very pliable and stretchable regardless of the temp. It was 45 degrees when I installed it. The pliability makes it easier to shape around irregular objects and tuck into square corners. Its thickness (45 mil vs. 12 mil plastic) means it will better withstand punctures from underlying rocks and debris. The only small drawback is the fact that the product will arrive covered in some sort of protective powder that needs to be rinsed off prior to use.

Very thick rubber-like material like the old inner tubes from huge tractor tires. I would protect it from burrowing moles, sharp objects, but this is probably as tough a material as is available other than the rigid plastic pre-shaped pond forms. I put puncture-resistant landscaping fabric underneath it and lots of my soft clay.It is very heavy, but UPS or USPS was able to deliver it. I think it weighed around 70 lbs, (15x 15 size) so have a hand truck, etc ready to take it out to where you want to place your pond. Took about 5-7 business days to receive it, no problem there.I love it. Have bought 2 more of these. I covered it at the edges so the sun's UV cannot weaken it (as UV does to all material eventually. It should last a very long time.

If building a pond resist the urge to use cheaper pond liners. Use this one. You will not be sorry. Very strong and easy to work with.