Why is there water on the inside of my window after it rains?

Author: Oswald Schneider  |  Last update: Tuesday, September 23, 2025

Damaged or missing flashing or sealant are common causes of window leaks. Make sure your window overhangs and sills are angled to lead water away from your home.

How do I stop condensation on the inside of my window?

How to Stop Condensation Inside Windows
  1. Improve Ventilation: ...
  2. Use a Dehumidifier: ...
  3. Dry Clothes Outdoors: ...
  4. Install Double or Triple Glazing: ...
  5. Leave Windows Open Overnight: One way to stop condensation on windows overnight is by leaving a small gap in your windows to allow moist air to escape while you sleep.

Why is my window leaking water inside?

The most common causes of windows leaking water are worn weatherstripping, cracks in the window frame, or a combination of both. Here are some tips to help you keep your windows from leaking water: Check the weatherstripping around your windows regularly. If you notice any wear or tear, replace it immediately.

Is it bad to have condensation on the inside of windows?

Occasional condensation on windows is normal and nothing to worry about, but when you observe interior condensation without any direct cause, that's a bad sign. It could mean that your home's humidity is too high, which could potentially lead to: Mould and mildew growth. Damage to wood and paint.

How to avoid rain water coming inside a window?

Here are five crucial ways to keep water at bay.
  1. Ensure Proper Installation. The cornerstone of water-tight windows begins with proper installation. ...
  2. Regular Maintenance and Inspections. ...
  3. Update and Maintain Weather Stripping. ...
  4. Use High-Quality Caulking. ...
  5. Install Window Flashing.

What Causes Window Condensation and How to Stop It

Why do I keep getting water on the inside of my windows?

The main cause of condensation is a lack of ventilation. The remedy is to improve ventilation to help equalise humidity inside and outside a property. Once upon a time, houses had badly-fitted windows, doors, chimneys and air vents that allowed for the circulation of air.

How do you waterproof a window from the inside?

How to waterproof windows post-installation
  1. Insert wood shims between the window and wall on the window's interior. ...
  2. On the window's exterior, apply flashing tape over the window flanges. ...
  3. Remove the shims and insert a backer rod to seal the interior. ...
  4. Load a caulking gun and apply sealant along the joints.

Should you wipe condensation off windows?

Should You Wipe Condensation Off Windows? Yes, wipe off any condensation on your windows with a soft microfibre cloth.

Why are my bedroom windows wet in the morning?

Condensation on windows occurs because water vapour in the air deposits itself on surfaces that are at lower temperatures. When moist air comes into contact with the cold impermeable glass surface of your windows, it releases some of this moisture onto the glass as water droplets. This is condensation.

Does condensation mean I need new windows?

Condensation on windows is a common issue faced by many homeowners. It can indicate poor insulation or excessive humidity in the home, but it doesn't necessarily mean you need to replace your windows.

How to tell if it's a leak or condensation?

One key way to tell whether you have condensation or a leak is to pay attention to when the moisture appears. If the moisture appears during or after a rain storm, it's probably due to a leak. On the other hand, condensation tends to show up during the winter months or a cold spell.

How do you fix water in a window?

How to remove the condensation between the window panes?
  1. Wipe away any moisture that has accumulated on the windows. ...
  2. Use a dehumidifier or air conditioner in the room. ...
  3. Use a hair dryer or heat gun on the window panes from the outside. ...
  4. Place a vinegar soaked towel between two window panes and leave it overnight.

How to find where a window is leaking?

On a cold day, hold your hands an inch away from the window frame and feel for any drafts. If you can't see or feel air leaks, then conduct a flame test with a candle. Light the candle and trace the outline of your window. If the flame and smoke pull in one direction, then you have found an air leak.

How do you get moisture out of the inside of a window?

Buy a dehumidifier: Dehumidifiers remove moisture from the air and keep it off of your windows. Place your dehumidifier near the windows where you tend to see the most condensation. Move your houseplants: Did you know that the more houseplants you have, the more moisture you'll find in the air?

Can you spray anything on windows to stop condensation?

Anti-condensation sprays or a mixture of vinegar and water can help reduce moisture buildup on windows.

How to remove moisture from a room in rainy season?

Beat monsoon dampness at home with these 10 effective tips
  1. Dehumidifier. Ensure proper ventilation by opening windows and using exhaust fans, especially in areas prone to moisture like bathrooms and kitchens.
  2. Ventilation. ...
  3. Air Conditioning. ...
  4. Charcoal Blocks. ...
  5. Silica Gel Packs. ...
  6. Baking Soda. ...
  7. Moisture Absorbers. ...
  8. Waterproofing.

Is it normal for windows to be wet on the inside?

Condensation on the interior of windows and doors occurs when warm, humid air comes into contact with cool glass. This is especially common in the winter when outside air is cold and dry, and the indoor air is warm and humid.

Does a bowl of salt help condensation?

By placing a bowl of salt near your windows, it will draw in and soak up any moisture from the environment, reports the Express. With less moisture present, the likelihood of condensation forming when indoor air meets the cold window glass decreases.

How to tell if you have too much moisture in your house?

What to look for when identifying a moisture problem
  1. Damp spots and water stains. Damp spots could appear in many places—on the floor, walls, or ceilings. ...
  2. Mold. ...
  3. Foggy windows. ...
  4. Musty smell. ...
  5. Sudden pest infestation. ...
  6. Warping or squeaking. ...
  7. An abnormally high moisture meter reading.

How do I stop condensation on the inside of my windows?

How to Stop Condensation on Windows
  1. Open windows in bedrooms at night. ...
  2. Keep curtains open in bedrooms at night. ...
  3. Open windows in bathrooms when showering or bathing. ...
  4. Open windows in kitchens when cooking. ...
  5. Dry clothes outside. ...
  6. Keep heating on constantly at a low temperature. ...
  7. Replace windows with condensation between the panes.

Does vinegar stop condensation on windows?

Unfortunately, the answer is no. While vinegar does have disinfecting and deodorising properties that can clean and remove built-up condensation from windows, it does not provide a long-term solution to stopping condensation.

What is the fastest way to remove condensation from your windows?

To remove the condensation quickly and cheaply wipe down the surface of the window with the squeegee. When all of the moisture is in one area, wipe it over with an old towel to remove it." While you can't eliminate moisture in your home completely, this hack is an easy way to remove condensation manually each morning.

How do I stop rain water from coming into my window?

A silicon-based sealant works best for sealing window leaks. For larger leaks, replace the weather stripping. It is important to use high-quality materials for the repair to ensure long-lasting protection. You can also consider installing storm windows if leaks are a persistent issue due to severe weather in your area.

What is best to put on windows to keep cold out?

Insulate with Window Film

Window film looks like the plastic wrap you use to cover food and does a great job at insulating your windows during the colder months.

How do you seal a leaking window from the inside?

One of the easiest fixes is to recaulk the window. Starting on the outside of the window, use a utility knife or caulk removal tool to cut away the damaged caulk. Then reseal the window using exterior grade caulk. Repeat the process on the inside using regular silicon caulk.

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