Why is My Bathroom Window Always Wet?

Many people complain that their bathroom windows remain wet and increase the overall moisture content. In addition, it can also make the interior unsanitary when bacteria and molds grow on their cold and damp surfaces.

Why is My Bathroom Window Always Wet? Your bathroom windows can always remain wet because of aluminum frames, temperature changes, warm showers, and wet towels and mats. You can keep the windows dry by using adhesive contact paper, ventilation, adding double-glazed windows, and applying the wax coating.

Bacteria and mold growth on these surfaces can also put your life at risk because these can come on your skin when you touch them for opening and closing.

Why are my bathroom windows always wet?

It is common to see that our bathroom windows are wet. The dried water patches on the glass material give a sense of uncleanliness.

Aluminum frames

Windows in your bathroom contain frames made of different materials, including aluminum and wood. These frames provide sealing properties and prevent the water from going outside.

In addition, it holds the glass material and allows forward and backward sliding for opening and closing. The aluminum frames remain cooler during cold weather because of their metal material.

The hot air from the inside, when it comes in contact with the cold aluminum surface, condenses the water vapors and converts them into droplets. The droplets also come on glass material and make them wet and unclean.

Installation location

Water presence on glass windows depends on their installation locations. Ideally, these should be installed away from the water-containing fixtures.

These remain wet when you install them near showers and bathtubs. Maintaining the distance between them is better so water does not go on the glass surface during bathing.

People add them near the shower and bathtubs to quickly remove moisture and steam. It can make the situation messy rather than providing benefits.

Maintain the markable distance between both fixtures to protect their surfaces from water droplets. Moreover, I prefer to add them away from the highly humid area to protect the glass and aluminum or wooden frames.

Temperature changes

Windows in your bathroom remain wet because of temperature differences in the surrounding environment. Some materials remain relatively cool during summer because of their non-heat-retaining material.

Glass surfaces are less vulnerable to heating during temperature changes. Hot air from outside, when it comes in contact with cold glass surfaces, triggers the condensation reaction and leaves water droplets there.

The issue also occurs in the winter when cold air comes in contact with slightly warm glass surfaces. You can also face an issue when you take warm showers and steam buildup on windows during winter.


Leakages in the underground plumbing system make the glass surface of windows wet. Many people prefer underground plumbing to maintain the appearance of their bathroom.

The interior does not look good and attractive because of the exposed water pipes. The underground plumbing system is more vulnerable to leakages, and it is also challenging to inspect them.

The issue comes from loose water line connections allowing water to seep between the walls. It can also weaken your home’s foundation by damaging wood studs.

The leakage issue also comes because old pipes are more prone to cracking.

Wet towels and mats

Many people do not dry the towels and keep hanging them on the racks. The damp towels increase the humidity content and make the windows wet.

It is better to take your towel outside for air drying so it does not increase the interior humidity. In addition, the issue comes because of the damp mats and rugs.

Keep the vanity and entrance door rugs clean and dry. Use vinyl or polyurethane curtains for showers and bathtubs because these do not absorb moisture from their surroundings.

How do you keep the bathroom windows dry?

It is necessary to keep your bathroom windows dry to get rid of unnecessary unsanitary environments and keep bacteria and mold-free for your children.

Adhesive contact paper

You can use adhesive contact paper on glass windows to protect them from moisture. These are sticky papers; you can adhere them to the glass surface after slight damping.

These contact papers are also easy to clean and dry instead of glass materials. Use the scrapper to remove the air bubbles from them during their installation.

In addition, it also provides insulation properties and protects them from getting warm and cold in the summer and winter seasons, respectively.

You can use transparent contact paper, which resembles glass and becomes invisible. You cannot detect their presence until when you touch them.

Ventilate bathroom

You can also keep the bathroom windows dry by ventilating the interior properly. Turn the extractor or exhaust fan during bathing to draw out the steam and hot air outside.

In addition, it is also better to open the windows after taking a bath so excessive moisture cannot accumulate on their glass surface.

Open the doors to maintain the internal temperature and remove steam. Run the cold water from the showers when you see excessive condensation and fog.

You can also run the bathroom dehumidifier to keep the interior dry. Place the raw rice in the jars so they can absorb the extra moisture. Turn on the electric heat and air conditioners to maintain the temperature.

Add double-glazed windows

Double-glass and double-pane windows are the most suitable choice for bathrooms. These provide more insulation than the single-pane glass layer.

It contains two glass layers or panes having space between them to create the insulation. Hot and cold temperatures cannot affect these double-paned glass materials.

You cannot see any water droplets on them during warm and cold showers. In addition, these also provide more privacy to your bathrooms instead of single-pane ones.

The thick and high-strength material makes them less vulnerable to scratching and breaking.

Apply wax layer

You can apply the wax to maintain the shine of the non-porous glass material. In addition, wax also protects the glass windows from water droplets.

Apply wax using a lint-free cloth and buff the surface for equal distribution. Moreover, I always use commercial-based water-repellent sprays instead of wax.

These are easy to apply and have fewer fogginess chances because of their manufacturing ingredients. The water-repellent sprays also contain wax as the main ingredient to keep the water droplets away from the applied surfaces.

Is condensation on bathroom windows dangerous?

Condensation on bathroom windows is dangerous because it can affect their frame material. It can ruin the aluminum and wooden frame and make them difficult to open and close.

Corrosion comes on aluminum frames because of water exposure. In addition, it can also damage the paint of the wooden and metal frame and give them an old and bad appearance.

It causes warping of wooden frames because these are not completely resistant to moisture. The wooden frames can also contract and expand because of continuous dry and damp conditions.

Molds can also grow on the damp and cold surfaces of glass material. It can make your hands unhygienic when you touch them for opening and closing.

How do you remove moisture from bathroom windows?

It is necessary to remove moisture from them so they cannot damage the paint and framing material. Add the squeegee near them to wipe off the glass material after showering.

You can also use a dry cloth to remove the moisture after bathing. Turn on the ceiling fans in your bathrooms to soak the extra water from the interior.

Moreover, I prefer to keep the dry and soft sponge in my cabinets to quickly wipe off the condensation droplets from mirrors and glass windows.

You can also use glass cleaning solutions if ring-like stains of mineral residues remain on their surfaces.

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