My bathroom mirror stays cloudy all day even after wiping it down. What causes this?

Temperature fluctuations can cause condensation to form on a mirror’s surface, particularly when the mirror is cooler than the surrounding air. This is a common issue in bathrooms, where hot showers can cause rapid changes in temperature.

To minimize condensation, try to equalize the temperature of the mirror and the surrounding air. This can be achieved by using a heated mirror or by ensuring the bathroom is well-heated before showering. Keeping the door open can also help regulate temperature changes.

Off-gassing from new paint, sealants, and other renovation materials can create a film on mirror surfaces. These fumes can condense on cool surfaces like mirrors, leaving a sticky residue that contributes to cloudiness.

If you’ve recently renovated your bathroom, ensure that the space is well-ventilated to allow these fumes to dissipate. Cleaning the mirror with a gentle, non-toxic cleaner can help remove any residue left by off-gassing materials.

Mold and mildew thrive in damp environments, and a bathroom mirror constantly exposed to moisture is at risk. Mold can grow around the edges of the mirror or even behind it, leading to a cloudy appearance.

To prevent mold growth, ensure that the bathroom is well-ventilated and that the mirror is regularly cleaned and dried. If mold is already present, it may be necessary to replace the mirror, especially if the backing is damaged by moisture.

If you’ve tried multiple cleaning methods and the mirror remains cloudy, it may be time to consider replacement. Persistent cloudiness due to damaged silvering, extensive scratching, or moisture damage often cannot be remedied by cleaning alone.

Replacing the mirror with a new, high-quality one can restore clarity and improve the overall appearance of your bathroom. When selecting a replacement, consider options with protective coatings that resist fogging and are easier to maintain.