Here’s a helpful, step-by-step feature on . How to Fix a Double-Pane Window Double-pane windows (also called insulated glass units or IGUs) are great for energy efficiency—until they fail. Common problems include condensation between the glass, fogging, a broken seal, or a cracked pane.
Here’s a helpful, step-by-step feature on . How to Fix a Double-Pane Window Double-pane windows (also called insulated glass units or IGUs) are great for energy efficiency—until they fail. Common problems include condensation between the glass, fogging, a broken seal, or a cracked pane.