Why is there water on the inside track of my sliding window?

Author: Justina Boyer  |  Last update: Sunday, June 14, 2026

Once homeowners see any little bit of water near their windows, they start freaking out. Are you one of them? Well, we are here to tell you that it's perfectly normal! Your windows have a built-in drainage system called “weep holes.” They are strategically placed to drain any water out of your window.

Is it normal for water to be in a window track?

It is normal, especially in the case of heavy rain. Since the outer side of the track is exposed to the elements, water from a storm is naturally going to make its way in there.

Is it normal to have water in a sliding door track?

It is normal, especially in the case of heavy rain. Since the outer side of the track is exposed to the elements, water from a storm is naturally going to make its way in there.

How do you keep water out of a sliding door track?

To help prevent the blockage of the drainage holes (and therefore help to reduce the risk of water ingress) the tracks should be maintained and cleaned on a weekly basis, to ensure the optimum performance of the sliding doors and to ensure that debris is not building up and slowing the systems designed drainage.

Why is there water on the inside of my window sill?

Common Causes of Window Leaks

This is a frequent issue in homes with poor insulation or high humidity levels. The condensation drips down and collects on the sill, giving the appearance of a leak. While it might not indicate a structural issue, it can lead to mold growth or damage if not addressed.

Cleaning Your Window Drainage Holes

Do window tracks have drain holes?

You can find weep holes on the: Exterior bottom corners of your windows. Inside the bottom of the screen track. Inside below the window track sliding windows.

Why is water seeping through my sliding glass door?

Leaks often stem from the door track but can come from several locations. A dirty or broken track can break the seal between the frame and the door. Check your rollers, flashing, and weep holes for repairs. Your glass can become unsealed over time.

How do you get moisture out of a sliding glass door?

You can couple a ventilating fan with a dehumidifier for maximum effects in reducing humidity and thus the moisture trapped on the door's glass surface. Install exhaust fans in your kitchen, laundry, and bathrooms to help deter this warmer air from mixing with the colder glass surface.

Do sliding door tracks need lubrication?

If your doors have vinyl tracks, be sure to use a lubricant that's silicone-based and non-stick. A silicone, non-stick lubricant is essential for vinyl tracks so the door slides easily and the lubricant doesn't attract dirt that can cause a clog in the track.

Why is water coming in my door when it rains?

Inspect around the door frame for any open cracks, damage, or rotting. If you have a vinyl door, take a step back and look at the frame of the door. Does it look off? Warping of your door frame will create cracks and open seals around the frame, allowing water to get into those cracks, leak, and rot.

Why am I getting water inside my windows?

Excessive humidity is the cause of most window condensation. As the outside temperature drops, the window glass temperature also drops. When moist air comes in contact with the cold glass pane, the moisture condenses and forms water droplets.

How do you clean a weep hole?

Check weep holes at least once a year, before the rainiest season. If they're clogged, open them up with a brush, a screwdriver or a toothpick. Clear away leaves, twigs and dirt that accumulate on the windowsill.

How to keep water out of a sliding glass door track?

Importance of Clear Drainage Holes

Sliding doors have weep or drainage holes at the track bottom to let water out. These holes can get blocked by dirt, leaves, or other things, stopping water from draining. Check and clean these holes often to keep the water out as it should.

How to clean a sliding window track?

Place baking soda over the entire window track and don't forget to add it to the nooks and crannies since this is where a lot of the dirt collects. Mix together dish soap, vinegar, and water in a spray bottle. Add the solution over the current baking soda to mix it. The window tracks should be completely covered.

Is there a way to clean inside a double pane sliding glass door?

Begin by gently wiping the external and internal glass surfaces with a soft cloth soaked in the soapy water mixture. Carefully clean the corners and edges where dirt tends to accumulate. After cleaning, use the squeegee to remove excess water, ensuring minimal streaking.

Why is my door wet on the inside?

Condensation on windows and doors happens because water vapour in the air accumulates on surfaces at lower temperatures. When damp air comes into contact with a cold, impervious surface, such as the glass of your windows and doors, it releases moisture onto the glass as water droplets.

Why do sliding windows leak?

Over time, the weatherstripping or seals on sliding windows deteriorate, leading to air leaks and drafts. These leaks can compromise indoor comfort and energy efficiency. Be sure to inspect the weatherstripping and seals around the window frame for signs of wear or damage.

What are the weep holes in sliding door track?

These are known as Weep Holes and are designed to help drain water from the track and stop it from building up. Naturally, in time, these Weep Holes will become clogged by dust, dirt, and other debris that can get in from outside.

Why is there water in the track of my window?

The sliding portions of the windows have a bug screen and when the wind is driving the rain through the bug screen the water comes right in, it will start sitting inside the frame until there is a lot of it, and then it will begin draining itself out the weep holes.

Why is water coming in my sliding glass door?

There are several reasons why water seeps indoors through sliding glass doors: Plugged weep holes. Small slots in the exterior section of track provide drainage when water comes in contact with the glass door. The openings often become clogged with dirt and debris.

Do all sliding windows have weep holes?

Do all windows have weep holes? No, many windows don't have weep holes. They're not usually found in wooden window structures. But you can expect to find weep holes in many vinyl windows and aluminum models and any window type that slides or rests in an outer frame that has a bottom track.

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