Roll a small amount of glazing compound into a thin "rope." Press it into the L-shaped groove of the window frame. This creates a weather-tight seal for the new glass to sit against. 4. Set the New Pane

For a lasting solution, you will need to replace the pane. Note: This method is for . Double-pane windows usually require professional replacement as they are sealed units.

💡 When measuring for your new glass, always measure the opening and subtract 1/8 of an inch from both the width and height. This "expansion gap" prevents the glass from cracking when the window frame expands in the summer heat.

Put on your gloves and goggles. Carefully remove the loose shards of glass. If the glass is stubborn, cover the crack with tape and gently tap it with a hammer to loosen the pieces from the frame. Place all glass immediately into a thick cardboard box or paper bag.