| Mistake | Consequence | |---------|--------------| | Drilling through inner pane | Complete glass breakage; safety hazard | | Using wrong sealant (e.g., acrylic) | Accelerated seal failure (months) | | Ignoring frame rot | Structural failure; water intrusion into wall | | Not matching gas fill | Reduced energy efficiency; potential mismatch with other windows | | Blocking weep holes | Water pooling in frame → mold, rot |
For most residential scenarios, Option B (IGU Replacement) offers the best balance of cost and performance. The process is as follows:
Double pane windows, also known as Insulated Glass Units (IGUs), consist of two lites of glass separated by a spacer and sealed to create an insulating air space. This space is often filled with inert gas (argon or krypton) to reduce heat transfer.
Recommended for long-term solution.
Glazing knife, putty scraper, suction cups, replacement IGU (custom ordered), glazing tape or silicone, shims.
If your window is a common brand, you might be able to order a new "sash" (the moveable part of the window that holds the glass) and simply swap it into the existing frame.