How To Unjam Your Window

How to Unjam Your House Window

How To Unjam Your Window

Window jams are a frustrating household problem, but with patience and some handy techniques most stuck windows can be unjammed; you won’t even need a professional glass service!


Putty Knife

The Putty Knife is a versatile hand tool that can be used for many different tasks. It can be used to apply filler materials such as wood putty, base application drywall compound (used in taping drywall joints) and spackling paste. Putty knives come in a variety of widths and are typically made of either stainless steel or polypropylene. Stainless steel is typically more suited for spreading while the polypropylene is often more appropriate for scraping applications. When trying to unjam a window, the first step is to check for paint that may have sealed the window shut. If so, fit a putty knife in the space between the frame and window sash and move it back and forth until the seal is broken.


If your house window is stuck shut, a hammer can be one of the easiest tools to use. A hammer is typically used for driving and shaping nails, but can also be used for breaking objects. Hammers come in a variety of sizes and shapes, depending on their purpose. They can range from a simple curved claw hammer to a framing hammer with an extended head, which drives larger nails. Before attempting to unjam your home or apartment window, make sure it is not nailed or screwed shut. 

Pry Bar

The angled, flattened end of a pry bar acts as a lever to apply a certain amount of force between two pieces of material. Pry bars are generally made from steel and come in all shapes and sizes. To unjam a house window, you can insert the flat end of a pry bar between the sash and the jamb. Tap the flat end gently to loosen it enough to allow you to move the sash.

Wood Block

If you have a window that won’t open, it could be stuck in the tracks that move it. If this is the case, try using a wood block to widen the channel where it opens. If the sash still won’t come down, clean off the paint on the track. It may have hardened or swollen and made it more difficult to move. Next, spray lubricant along the window channel. If that doesn’t work, try taping the block sideways into the sash frame. If that doesn’t work, it may be time to use a pry bar.

Spray Lubricant

One of the most common ways to unjam a house window is to use spray lubricant. It works quickly and effectively, and won’t damage your home. Before spraying lubricant on a window, make sure it’s clean and dry. If the lubricant isn’t properly applied, it could create a greasy mess on the frame that’s difficult to remove. Use a lubricant specifically designed for de-jamming windows, such as silicone spray. It will keep your sash sliding smoothly and prevent paint chipping. If the problem persists, contact us for help!