How To Open Painted Shut Windows in 7 Steps

Before you start chipping away at the paint sealing the window down, you’ll need to ensure it is actually painted shut and not just nailed. If the latter, you can start by removing the screw or nail that is preventing the window from opening with a screw gun or hammer and pry bar, respectively, before attempting to break the window free.

The thin blade of the window opener is specifically designed to easily slice through a paint seal from the window edge to the frame. Work it like a saw with short back-and-forth motions, and don’t force the tool, or it will break. It’s made to get in deep and cut the years of old paint away from the window frame like a razor saw. If you don’t have access to a window opener, you can use a putty knife instead, but for excessively painted cracks, you’ll have a hard time making this work.

Both sides of the window will need to be free of the gluing effects of excessive paint buildup, but you’ll also need to check the tops and bottom edges of the sash to ensure they are free and clear. Homeowners sometimes caulk or otherwise seal up these exposed joints in an effort to prevent water intrusion. Using the same window opener tool, work the blade between the cracks to create a clean break between them.

Now for the big hurrah. Once you feel like you’ve broken the seal and created a clear separation between the window sash and the frame, give the window a quick tug upwards. You might have to wiggle the sash or deliver sharp blows to the upper edge of the window to make the separation complete. If these tricks don’t work, take a pry bar to the bottom edge and gently work the window up until you’ve got movement.

Once you’ve freed the window from its previously painted shut situation, you can ensure smooth movement of the sash in the future by taking rough, 50-to-80-grit sandpaper to the slide rails. This will remove all the old material and create a clean channel for the sash to work the way it was intended.

The process of breaking a window free from decades of excessive painting will generate a host of chips and scratches on the exterior of the frame. You’ll want to sand down obvious sections and, if there is raw wood, prime with a high-quality exterior primer. Keeping the window all the way open while you apply the topcoat is a smart move to prevent the windows from sticking back together again. Paint the entire window, sash, and frame with fresh paint to complete the job.

Beyond touching up the paint, you should assess for any further damage to the functionality of the window. If there are any repairs or replacements necessary—like cracks in the window—you should deal with those promptly.