• Archives

  • Categories

  • Pages

I have a leak in my liner. How do I repair it? | Decorative Ponds & Water Gardens Q & A

Q: I have a leak in my liner. How do I repair it?

Q: I have a leak in my liner. How do I repair it?

Catherine – Ballwin, MO

A: Dropping water levels and wet patches appearing around your pond indicate one thing: a leaky liner. Don’t worry. It doesn’t mean you need to rebuild your water garden from the ground up. You just have to patch the leak.

Your repair process starts with determining the size of the leak. Smaller holes can simply be patched; larger punctures or multiple tears need a bit more attention. Here’s what we recommend based on the leak size.

For Smaller Holes …

If you have a small hole in your liner that’s 5 inches or less, you can use the EPDM Pond Liner Patch Kit. It contains everything you’ll need to fix minor tears or holes, including a EPDM rubber patch, solvent wipe, a scrub sponge, seam roller and pair of disposable gloves.

To begin, make sure the surface is both clean and dry. If necessary, relocate your fish in a holding tank while prepping the liner and performing your repair. After the patch is in place, you can top off your pond’s water level, and acclimate and return your fish to their home.

For Tears or Punctures …

To repair smaller tears or punctures without draining your pond, you can use Underwater Pond Sealer. Remember, however, that it has to be beaded on, not smeared on, because it’s a sealer, not an adhesive. When used as directed, it’ll start to be tacky in two to three hours, and fully cured in 48 hours. The sealer performs best in water that’s 60° Fahrenheit.

For best results, clean the surface and make sure it’s free of grease and algae. If necessary, relocate your fish in a holding tank while allowing the repaired area to fully cure.

Then place sealer directly onto the surface you wish to bond/seal. Put two 5mm diameter beads of sealer 100mm apart on the overlap. Gently run your fingers over the line to make sure the sealer has connected both pieces of liner. Do not press it flat, and don’t be tempted to pull it apart to see if it has stuck! Allow the sealer to fully cure before returning your fish to the pond.

For Multiple Tears or Large Punctures …

Larger punctures of multiple tears will require some work. You’ll need to put your fish in a holding tank, drain the pond and adhere a new piece of liner to the existing one. Here’s what you’ll need and how the process should go:

First, you’ll need to purchase a liner seaming kit, a new piece of liner and have some protective gloves on hand. After you’ve repaired the tears and ensured that the adhesive had done its job, refill your pond, and acclimate and return your fish to their home.

Good luck repairing your leaky liner!

Pond Talk: Have you ever had to repair your leaky liner? Tell us about your experience!

Repair Leaky Liners Without Draining Pond - Gold Label Pond & Aquarium Sealer

I realized today that my pond seems to have a leak. How could I find out? – Decorative Ponds & Water Gardens Q & A

Put It On The Patch

I realized today that my pond seems to have a leak. How could I find out? Cindy – Kirtland, NM

This Blog Has A Lot of Holes

Having a leak in your Pond Liner can be frustrating at best, but not being able to locate the source of the water loss can be maddening. While repairing a leak in your pond is never your ideal way to spend time at your water garden, knowing how to locate and stop your leaks can change an extremely bothersome job into a relatively smooth process.

Now You See It … Now You Don’t

It is normal to experience some water loss in your pond throughout the season. This is due to evaporation. In areas with warmer climates it is not uncommon to lose a couple of inches of water each week. While evaporation is a natural process it can still be annoying at times as it will require you to add water to your pond to maintain your normal water level. Installing an Auto Fill Valve in your skimmer will keep ensure your pond is always at your desired water level without you having to go out and physically fill it. For those of you who experience small water loss like this during your warmer seasons, feel free to let out a sigh of relief, there will be no leak hunting for you today.

Learn To Locate Your Leaks

Alliteration aside, if you are losing more than a few inches a water from your pond in a short time span it is time to sniff out these leaks and seal them up. The best way to find the source of your water loss is to start with the obvious as it may save you the time and trouble of moving the rocks in your pond, or worse, pulling up your plumbing.

Look For Low Edges or Overspill: Inspect the edges of your pond, waterfall, and stream bed. Make sure there is no water spilling over the edges of these areas and if you have tight turns in your stream make sure the water able to follow the curve without splashing out. Check for damp areas or pooling water outside of the pond for indications of such leaks. If the water level exceeds the level of your pond liner you will want to adjust the level of the overflow drain in your skimmer to maintain a shallower water body. If you are losing water from the falls or stream bed re-arrange the rocks to remove obstructions and create gentler curves.

Shut Down Your Pump: If your search for the obvious turns out uneventful it is time to check the pond area itself. Shut down your pumps and turn off your auto fill valve if you have one. If you experience significant water loss from the pond then you have now successfully narrowed the search for the leak. If you have fish in your pond you will want to run an alternate form of Aeration while your system is shut down as the process can take a day or two. If the leak is in the side of the pond liner the water level will drop to the height of the cut in your liner and stop. If the leak is in the bottom of the pond the pond will eventually empty out so make sure you are periodically checking in on your project.

Inspect Your Skimmer and Plumbing: If the water is successfully being held in the pond with the pump off the leak my be in the Skimmer Box or the plumbing itself. Inspect the skimmer box and try to locate a crack or hole. Inspect and tighten the fittings going from the skimmer box or pump to the Waterfall Box. Follow the tubing path and look for any water dampness in the ground. If there is, there’s a good chance coupler fittings are loose or you have a leak in the tubing.

Got Milk?

For the areas that make sense, you can use milk or Pond Shade and an eye dropper to visually track the flow of the water leaving the pond. Go along the edges of the pond and apply drops to pinpoint the area of the pond where your pond water is making its great escape. Move any rocks or plants in that area and get ready to show this leak whose boss.

Does Your Pond Need To Quit Leaking? Put It On The Patch.

Once you have located the cut in your pond liner clean off any dirt or debris from the general area. If the hole is a small cut or puncture you can use Underwater Pond Sealer to cover the area and stop the leak. You do not have to drain the pond to use this type of sealant as it will cure underwater, just make sure that you apply the product in a bead and do not press it flat. You can use the Underwater Pond Sealer to patch holes in your waterfall box and skimmer as well. For holes up to 5” you can also purchase a Patch Kit. These kits will come with an adhesive patch that attaches directly to your liner after you have cleaned it and made sure it is dry. If you have opened the flood gates and put a puncture larger than 5” in the pond you can purchase additional Pond Liner and some Seam Tape to repair the damage. The use of seam tape will also require you to clean and dry the areas of liner surrounding the hole. After applying Seam Tape, we recommend using Cover Tape to ensure the leak is secure. Regardless of which type of repair you use you will want to overlap the cut, tear, or hole by at least 1” to ensure an adequate seal.

Pond Talk: Have you ever had a leak in your water garden? How did you go about fixing it?

Underwater Pond Sealer - Works wet or dry!

Follow

Get every new post delivered to your Inbox.

Join 143 other followers