What Causes a Door to Stick?

A sticking door can be frustrating — especially when it suddenly becomes hard to open or close. While it may seem like a big problem, most sticky doors have a simple explanation.

Common causes include:

🌡️ **Humidity and moisture** – Wood swells during humid weather
🛠️ **Loose or misaligned hinges** – The door may sag slightly out of place
🏠 **Shifting house frame** – Common in older homes or after renovations
🪵 **Paint buildup** – Thick paint layers along the edges can cause friction

Quick Fixes You Can Try

🔧 **Tighten hinge screws** – Start by checking if the door is sagging. Tightening loose screws can help re-align it.
🪚 **Sand the edge** – Mark the area where the door rubs and gently sand it down.
🖌️ **Check paint buildup** – If the edges are sticky from paint, use a utility knife to carefully score and remove excess paint.
💨 **Use a dehumidifier** – In summer, reducing indoor humidity can help prevent seasonal swelling.

When to Replace the Door

If the issue keeps coming back, or if the door has warped permanently, it may be time for a replacement — especially with older wooden doors that no longer seal properly.

Request a free door inspection from our team

Serving Niagara Falls, St. Catharines, Welland, Thorold, Fort Erie, Port Colborne, Grimsby, Beamsville, Hamilton, Ancaster, Burlington, and surrounding areas.