How to Patch a Winter Pool Cover

On this page (11 sections)

1. Can you patch a winter pool cover yourself?
2. How do you find the leak before you patch?
3. What should you have ready before you patch?
4. How do you clean and prepare the patch area?
5. How do you apply a patch to a winter pool cover?
6. How do you keep water off a freshly patched cover?
7. When is patching not enough?
8. How do you keep a repaired cover secure through winter?
9. Which cover type is easiest to patch?
10. How do you know the patch is holding?
11. What's the right way to patch a winter pool cover before the freeze?

To patch a winter pool cover, find the leak, clean and dry the area around it, and apply a patch kit made for the cover material. Then press the patch flat, keep the cover weighted and drained, and check the repair again before the hard freezes arrive.

A patch that goes on over grit or a wrinkle will lift at the first freeze. A small kit, a dry day and a flat patch save you from buying a whole new cover mid-season.

Can you patch a winter pool cover yourself?

Yes, most small holes and short tears are a do-it-yourself repair with a patch kit made for the cover's material. A solid vinyl cover takes a vinyl patch; a mesh cover takes a mesh patch.

The job takes about 20 minutes once the area is dry. You don't need to drain the pool or take the cover off for a small repair.

Pull the damaged section flat where you can reach it, and work on a mild, dry day.

Skip the DIY patch when the fabric feels brittle or the tear runs longer than a few feet. A failing cover should be replaced, and our guide to inground pool covers for winter covers what to look for in a new one.

How do you find the leak before you patch?

Look for the low spot where water pools, a steady drip under the cover edge, or a wet band in the fabric. Mark the spot with tape before you start cleaning.

On a solid cover, water usually collects over the hole because the fabric sags there. Check the seams and the corners first, since those take the most strain.

On a mesh cover, look for a bright spot or a run in the weave where light shows through.

You can also watch the pool's water level over a few dry days. A cover that keeps losing water despite a pump running is telling you where the problem is.

What should you have ready before you patch?

Gather a patch kit for your cover material, a clean cloth, mild soap, and a way to keep the cover dry. A cover pump helps clear standing water so the repair area stays flat.

Clear the water off the patch zone first. Standing water under the patch is the main reason a repair fails.

A small pump set on the cover pulls water down to a shallow level, which lets the fabric lie flat.

Work in the morning on a dry, mild day. Patch adhesive needs some warmth to bond, and the cover surface needs to be free of frost.

How do you clean and prepare the patch area?

Wipe the area with mild soap and water, then rinse and dry it fully. Remove algae, grit and any old patch residue so the new patch can bond to clean fabric.

Scrub gently with a soft cloth so you don't spread the hole. Rinse with clean water and blot dry, then let the area air dry in the sun.

A hair dryer on a cool setting can help on a still, overcast day.

Don't use harsh solvents unless the patch kit says so. Some cleaners leave a film that stops the adhesive from sticking.

How do you apply a patch to a winter pool cover?

Cut the patch larger than the damage, round the corners, and press it down from the center out. Rounding the corners stops the patch from peeling at a sharp point.

1. Cut a patch at least 2 in wider than the hole on every side.
2. Round the corners with scissors so no sharp point can catch water.
3. Peel the backing or apply the kit's adhesive as directed.
4. Press from the middle outward to push out air bubbles.
5. Smooth the edges down firmly and check for lifted corners.

If the kit uses a separate adhesive, follow its cure time before letting water back onto the cover. Many kits want 24 hours.

Keep the pump running elsewhere on the cover so water doesn't pool on the fresh patch.

Which patch kit suits a solid vinyl cover?

Choose a vinyl patch kit for a solid cover because the patch needs to match the fabric's stretch and surface. Kits come in clear and opaque versions, and clear ones blend into the cover color.

Match the patch to the cover's thickness where you can. A patch that's much thinner than the cover will wear through first.

Skip a kit that lists a minimum temperature above the day's forecast. Wait for a milder day rather than forcing it.

Which patch suits a mesh cover?

Use a mesh patch on a mesh cover so water can still drain through the repaired spot. A solid patch on mesh blocks drainage and creates a puddle over the repair.

Mesh patches come as small squares you trim to size. Line up the weave as closely as you can so the patch blends in.

Avoid placing the patch on a fold, where it will rub and lift.

How do you keep water off a freshly patched cover?

Keep the cover pumped down and the patch flat while it cures, then keep up with water through the winter. Standing water is the main enemy of both the patch and the cover.

An automatic cover pump is the simplest way to stay ahead of rain and snowmelt. A pump set on the cover pulls water off before it can pool on the repair.

Our guide to cover water pumps compares the main options if you don't have one.

Clear debris off the patch area too. Leaves and twigs hold water against the repair and speed up wear.

When is patching not enough?

Replace the cover when the fabric is brittle, the tear is long, or several holes sit close together. A patch on failing fabric just moves the leak a few inches down the cover.

Signs that a cover is past patching include cracks when you fold it, a chalky surface, and seams that pull apart. A cover that keeps dropping into the pool despite weights is also telling you something.

If you're not sure whether a repair or a replacement is the right call, our comparison of safety cover vs winter cover explains how each type wears and when to switch.

How do you keep a repaired cover secure through winter?

Keep the cover weighted and drained, and check the patch after storms. A cover that flops in the wind pulls at the patch and works it loose.

Water bags or cover weights hold the edges down so wind can't lift the cover. Keep the water level on top shallow, and run a pump when rain is forecast.

A cover that sags in the middle puts strain on every seam and patch.

Look at the patch each time you clear debris. If an edge lifts, dry it and press it back down, or add a second patch over the corner.

Which cover type is easiest to patch?

Solid vinyl covers are the easiest to patch, because a flat vinyl patch bonds to a smooth surface. Mesh covers take a mesh patch and need the weave lined up, which is a little more fiddly.

The table below sums up the cover types and how each one patches. For the full picture on each type, see our guide to types of pool covers.

Safety covers and solar covers each have their own repair needs. A safety cover often comes with the maker's patch guidance, so follow that before using a general kit.

Solar covers patch like thin vinyl but need the bubbles pressed flat first.

How do you know the patch is holding?

Check the patch after the first rain or snow melt. A dry patch edge and no water under the cover at that spot mean the repair took.

Press the edges with a dry finger. If an edge lifts or water beads under it, dry the area and add a larger patch over the top.

Don't pull the old patch off, since that can enlarge the hole.

If the cover keeps losing water after a few patches, the leak may be in the pool liner rather than the cover. Stop patching and check the pool itself before buying more kits.

What's the right way to patch a winter pool cover before the freeze?

The answer comes down to a dry, clean surface and a patch that matches the cover material. Patch small holes early, while the weather is mild and the cover is still easy to handle.

Pick a vinyl kit for a solid cover and a mesh kit for a mesh cover. Keep water off the repair with a cover pump, and weight the edges so wind doesn't pull at the patch.

Then check the spot after each storm and again at spring opening.

If the cover is worn past patching, plan a replacement now rather than fighting the same leak all winter. Our walkthrough on how to install a winter pool cover covers setting a new cover, adding water bags and keeping it tight through winter.

Frequently asked questions

Can you patch a winter pool cover that's already on the pool?

Yes, you can patch most small holes while the cover stays in place. Pull the damaged area flat and dry, clean off any algae or grit, then apply the patch kit and press it down firmly.

Keep water off the repair for a day so the adhesive can set.

How long does a pool cover patch last?

A well-applied patch on a clean, dry surface can hold for the rest of the winter season and sometimes longer. The repair fails when water gets under the edge or the patch sits over a wrinkle.

Recheck it after storms and add another patch if the edge lifts.

Should you patch or replace a torn winter pool cover?

Patch small holes and short tears if the rest of the cover is sound. Replace the cover when the fabric is brittle, the tear runs past a few feet, or there are several holes close together.

A failing cover lets debris and sunlight into the pool and can drop into the water.

Does a pool cover patch work in cold weather?

Many patch kits need temperatures above freezing to bond well, so apply the patch on a mild, dry day. Warm the patch and the cover surface slightly first.

If the cover is frozen or wet, wait for a thaw instead of forcing the repair.

How do you find a leak in a winter pool cover?

Look for a low spot holding water, a steady drip under the cover edge, or a wet band in the fabric. For solid covers, watch where the water level drops or where debris collects.

Mark the spot with tape before you clean and patch it.