How to Restore Painted Shut Windows in 7 Steps

Restoring painted shut windows can be a frustrating task, but with the right tools and techniques, you can get your windows open and functioning again. In this comprehensive guide, we’ll walk you through the steps to restore your painted shut windows, from identifying the issue to getting them back in working order.

Verify the Window Is Painted Shut, Not Nailed Shut

Before you begin, it’s important to determine whether your window is painted shut or nailed shut. Nailed shut windows will require a different approach, as you’ll need to remove the nails before proceeding.

To check if your window is painted shut, try gently pushing on the sash. If it doesn’t budge, chances are it’s been painted shut. You may also notice a buildup of paint around the edges of the sash and frame.

Prepare the Work Area

Once you’ve confirmed that your window is painted shut, it’s time to prepare the work area. If the window is on the second floor or out of reach, set up a ladder to access it from the outside. Working on a window from the inside is more difficult and will require cleanup and removal of the interior window frame.

If your home was built before 1978, there’s a good chance the paint contains lead. Test for lead using a commonly available swab, and if present, take basic precautions like wearing a dust mask, vacuuming with a HEPA filter, and thoroughly washing your clothing after the job is complete to prevent exposure to others, especially children.

Separate the Paint From the Window

To separate the paint from the window, you’ll need a putty knife or a window opener tool. A window opener is a thin, serrated, wedge-shaped saw that can be purchased from most hardware stores.

Slide the putty knife or window opener between the stop bead (the piece of wood covering the top and sides of the window) and the window sash (the frame containing the glass). Cut through the paint seal by gently tapping the tool with a mallet or hammer. Be careful not to damage any paint on the sash or around the edges of the stop bead.

Check Between the Top and Bottom Sash

If the window is still stuck after separating the paint, check the joint between the top and bottom sash. Use the putty knife to slide along the meeting rail where the top and bottom sash meet, cutting through any paint that may be holding them together.

Crack the Seal

Once you’ve cut through the paint seal, try lifting the sash. If it’s still stuck, use a small pry bar to carefully lift the bottom sash. Apply a small amount of pressure and avoid using excessive force, as this could damage the window.

If the window is still stuck, it’s possible that it’s painted shut from the outside. Head outside and repeat the process, using the putty knife or window opener to cut along the edge of the sash. Carefully use a pry bar to lift open the bottom sash.

Remove the Sash

If the window is still stuck after trying to lift the sash, you may need to remove it completely. Use a putty knife or utility knife to cut the paint seal around the edges of the sash. Once the seal is broken, lift the sash out of the frame.

If the sash is stuck in the frame, use a pry bar to gently lift it out. Be careful not to damage the frame or the sash.

Clean and Lubricate the Window

With the sash removed, it’s time to clean and lubricate the window. Use a scraper or sandpaper to remove any remaining paint from the sash and frame. Be sure to clean the channels in which the sash travels, as any buildup of paint or debris can cause the window to stick.

Once the window is clean, apply a thin layer of lubricant to the channels. You can use a bar of soap or a silicone-based lubricant designed for windows. This will help the sash move smoothly and prevent it from sticking again.

Reinstall the Sash and Test the Window

With the sash cleaned and lubricated, it’s time to reinstall it in the frame. Make sure the sash is properly aligned and that the channels are free of any obstructions.

Once the sash is in place, test the window by opening and closing it several times. If it’s still sticking, repeat the cleaning and lubrication process. If the window is operating smoothly, you’re all set!