Double glazed windows can at times mist up internally, this is caused by a breakdown of the seal between the two panes of glass, it’s not uncommon but thankfully a relatively easy and inexpensive fix. The installer will usually need to visit your home to measure up for a new sealed unit. Once this has arrived it’s simply a case of taking the beads out and installing the new pane of glass.
User submitted prices
Below are prices submitted by other WhatPrice users that have had windows repaired to give you a better idea of costs involved.
2 bay window and 3 normal windows filled and repaired.
replace two misted units in PVC windows approx glazed area 1.5sqM
Replaced 5 double glazed units in 3 windows that had misted up (seals failed). Included 1 in safety glass
Supply and install two blown sealed units
16 panes replaced (Putty) in wooden sash windows around whole house. All the seals had blown. Various sizes. Took all blown ones out, down to wood and replaced, no painting. 2 full days work.