Many properties across Havering carry original or early uPVC frames that are structurally sound but have glazing units that have failed over time. Condensation or misting between the panes means the hermetic seal inside the double-glazed unit has broken down, allowing moisture in. That is a glass fault, not a frame fault, and it is resolved by replacing the sealed unit rather than the whole window.
The installer measures the existing opening precisely, confirms the correct glass type, double-glazed sealed unit, toughened safety glass, or frosted, and removes the old pane by releasing the glazing beads. The new unit is set into the frame, the beads are refitted, and the perimeter is sealed. For rental properties across the borough, a fast glass fix keeps the property habitable without the cost of full window replacement.
Cracked or broken single panes in timber frames follow the same process: measure, match the glass specification, remove the old pane with putty or beads, and bed the new glass in correctly. The written quote covers the glass unit, glazing beads if replacement is needed, and labour, listed separately so you can see the cost of each element before the installer starts.