Schedule Appointment
Austin Pro Calender Icon
Appointment
phone icon
Call Us
Austin Pro Siding, Windows, Roofing, Patio Covers Logo

What Causes Your Wood Doors to Expand and Contract?

By
austin pro
Written by Austin Pro Management
July 18, 2024

What Causes Your Wood Doors to Expand and Contract?

Have you noticed that your doors become larger on humid days? Usually, your front and bathroom doors have the snuggest fit in your home because they are more exposed to moisture. This is because wood tends to swell and expand.

Door and window replacement contractors share reasons your wood doors expand and contract.

Excessive Moisture

Too much moisture and the lack of water-repellent finish can cause your doors to swell. Moisture can penetrate your wood doors, especially from the bottom edge, when they aren’t sealed or finished properly.

Heat and Humidity

Changes in heat and humidity levels can result in wood expansion and contraction. Wood is naturally porous and without protection or waterproofing, it will absorb all the moisture it can, causing it to swell and expand. Under warm, moist conditions, wood doors can push against the frames, get stuck or become difficult to open and close.

The swelling may reduce as moisture evaporates from the door, depending on the kind of wood. However, sometimes, the wood doesn’t go back to its original state. You may need to sand or plane the door sash when this occurs. You must be careful not to sand too much or else, there will be gaps that could reduce the door’s energy efficiency. If your door is old and the problem persists, it may be best to invest in a new one. At Austin Pros, you can rely on our experienced door and window installers for excellent door replacement services.

Your Climate

Where your door is installed and your climate can contribute to door swelling. Doors in the southern and western areas receive more sun, which can affect their finish. Your wood door will eventually start to swell when it doesn’t have enough protection.

Looking for roofers or door installers? Turn to Austin Pro Siding, Windows & Roofing for superior home exterior services. Call us at (512) 550-0000. You can also complete our contact form to request an appointment.

3 Things to Remember About Painting in Cold Temperatures
February 28, 2026
3 Things to Remember About Painting in Cold Temperatures

Painting in winter presents unique challenges. Here are three essential tips to ensure a flawless finish even when the temperature drops.

What Your Austin HVAC Tech Wishes You Knew About Your Old Entry Doors
March 20, 2026
What Your Austin HVAC Tech Wishes You Knew About Your Old Entry Doors

Your HVAC system may be running perfectly — but if your Austin home has an aging entry door, it could be silently draining your conditioned air and spiking your energy bills. Learn how to spot the problem with a 30-second flashlight test and discover which door materials actually hold up to Texas heat.

Illuminating Your Outdoor Space: Patio Lighting Ideas
February 28, 2026
Illuminating Your Outdoor Space: Patio Lighting Ideas

Set the mood outdoors. Explore creative lighting ideas to illuminate your patio and yard.

Choosing the Perfect Window: A Homeowner's Guide
February 28, 2026
Choosing the Perfect Window: A Homeowner's Guide

Navigate the world of window styles, materials, and features with our comprehensive guide to finding the perfect windows for your needs.

The Advantages of Replacing Your Windows and Siding Together
February 28, 2026
The Advantages of Replacing Your Windows and Siding Together

Save time and money by tackling windows and siding simultaneously for a smarter renovation.

The Real Reason Austin Homeowners Are Trading Wood for Fiberglass Entry Doors
March 20, 2026
The Real Reason Austin Homeowners Are Trading Wood for Fiberglass Entry Doors

Austin’s UV, humidity swings, and sudden storms can warp and wear wood entry doors fast. Learn why modern fiberglass entry doors deliver a wood look with better sealing, lower maintenance, and long-term value in Central Texas.