Why Do Internal Doors Expand and Swell?

Why Do Internal Doors Expand and Swell?

Doors | 0 comments

Polar Bear

February 17, 2022

Doors can be pretty temperamental. Depending on the time of year, they can expand and swell up causing them to stick. And because the average American home has seven or more internal doors, this problem can get really annoying fast. If you want to address this issue, you first need to understand what causes them to stick in the first place. So, in today’s blog post, your trusted door and window contractor explains why this happens and what you can do to fix it.


Excess Humidity

As mentioned above, it’s quite common for your internal doors to swell up and start sticking, usually during the summer when the humidity levels increase outside. Because wooden doors are a porous material, the excess moisture in the air can cause your doors to stick at some points in their frame or to scrape along the floor. 

Aside from the weather, other factors can also lead to sticky internal doors. Moisture that is produced from inside of your house can also cause problems. If your house has poor insulation or is not well ventilated, that could also lead to door swelling.

How To Fix It

Since we now know that swelling is caused by excess moisture in the air, then the first step to address the problem is to control the humidity levels. You can do this by airing out your rooms or by adding extra ventilation. Your door and siding contractor might also suggest that you switch to non-wood doors.

One other thing you need to remember is that too much humidity will not only cause your doors to stick, but it also can also lead to mold and mildew growth, peeling and cracking paint, as well condensation on your windows, among other things.

Polar Bear Exterior Solutions is proud to offer high-quality Polar Bear Windows as well as door, siding, and roofing services to residents in Seattle as well as its surrounding areas. Give us a call at (425) 290-5579 to schedule an appointment or fill out our contact form to request a free estimate today.

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