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Why Do Doors Stick In The Summer?

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As the temperature rises during the summer months, you may notice that your doors start to stick. This can be frustrating and inconvenient, especially when you’re trying to enjoy the beautiful weather. But why does this happen? In this article, we will explore the reasons behind door sticking in the summer and provide some tips on how to prevent it.

Understanding the Science

When it’s hot outside, the materials that make up your doors, such as wood or metal, expand due to the increased temperature. This expansion can cause the door to become misaligned or even warp slightly, resulting in it sticking when you try to open or close it.

Humidity and Moisture

Another factor that contributes to door sticking in the summer is increased humidity. When the air is humid, moisture can be absorbed by the door material, causing it to swell. This swelling can lead to a tight fit between the door and the door frame, making it difficult to open or close.

Prevention and Maintenance

1. Keep Doors Clean and Dry

Regularly clean your doors to remove any dirt or debris that could interfere with their proper functioning. Additionally, make sure to wipe down any moisture or water that may accumulate on the surface of the door, especially in humid conditions.

2. Use Lubrication

Apply a lubricant, such as silicone spray or WD-40, to the hinges, doorknobs, and locks to ensure smooth movement. This will help reduce friction and prevent sticking.

3. Adjust the Door

If you notice that your door is sticking, you may need to make some adjustments. This can include tightening loose screws or hinges, or sanding down any areas that are rubbing against the door frame. However, if you’re not comfortable making these adjustments yourself, it’s best to consult a professional.

4. Use a Dehumidifier

If you live in an area with high humidity, consider using a dehumidifier in your home. This will help reduce the moisture levels in the air and minimize the chances of your doors sticking.


Door sticking in the summer can be a frustrating issue, but understanding the reasons behind it can help you prevent and address the problem. By following the tips mentioned in this article, you can ensure that your doors continue to function smoothly even in the hottest months of the year.