How we fix it
We confirm the moisture is between the panes (not on the room-facing surface), measure the pane, and identify the spacer type. Then we quote a matched-spec replacement unit — no need to touch the frame. New argon-filled A+ rated sealed unit with warm-edge spacer, fitted into the existing frame with fresh glazing tape and re-beaded from the inside. Two-hour job per pane.
- Glass swap only — the frame and beading are reused
- Warm-edge argon-filled A+ rated units as standard
- 10-year guarantee on the new sealed unit
- Likely causes on Leicester homes: Perimeter edge seal failure allowing humid air into the cavity; Age — most sealed units start failing between 15–20 years old.
