If your windows are old, the frames are rotting, or you have multiple failed seals, it may be more cost-effective to replace the entire window (frame and all). This provides the best energy efficiency and adds value to your home.
If the seal is damaged or deteriorated, apply a new seal using a tube of silicone sealant. Make sure to follow the manufacturer's instructions for application and drying times. how to fix a double pane window seal
If a double pane window seal has failed, it may exhibit one or more of the following signs: If your windows are old, the frames are
| Step | Action | Tool/Material | |-------|--------|----------------| | 1 | Remove sash (if operable) | Screwdriver, pry bar | | 2 | Take out glass stops (carefully – they break easily) | Stiff putty knife, rubber mallet | | 3 | Measure IGU thickness, width, height – order replacement | Tape measure, glass shop order form | | 4 | Clean frame channel of old sealant | Utility knife, denatured alcohol | | 5 | Apply new sealant (butyl tape or silicone) | Caulk gun or tape roll | | 6 | Place setting blocks in bottom channel | Rubber or plastic shims | | 7 | Set new IGU into frame | Suction cups (helpful for large units) | | 8 | Reinstall stops/beads | Finish nails (wood), snap-in (vinyl) | | 9 | Reinstall sash | Screwdriver, hinge pins | Make sure to follow the manufacturer's instructions for