Sarah’s first instinct was to run to the hardware store. Smartly, she stopped. She measured the entire window frame and took a photo of the manufacturer’s sticker on the spacer bar between the panes. She learned that for sealed double pane units, you don’t buy “glass.” You buy a sealed Insulated Glass Unit (IGU) —two panes fused together with a spacer. Her local glass shop cut custom IGUs for $85.
Home again, she set the new IGU into the frame without sealant first. It slid in perfectly. She then inserted the plastic shims (bought for $3) at the bottom corners to lift the glass evenly. This prevents pressure points that cause future cracks. how to replace a double pane window glass
Sarah considered calling a pro—$400 minimum. Instead, she decided to try fixing it herself. Here’s what she learned through trial, error, and a few choice words. Sarah’s first instinct was to run to the hardware store