If a double glazing seal has become damaged or is damp for a while, then this allows moisture to enter the unit, either from the cold morning dew, or from humid air inside the house entering into your unit, causing it to become fogged up.

We booked the customer in for a double window replacement, and on a saturday morning we went to get the job done for him. On the day of the replacement it was forecast clear and sunny skies - perfect weather for changing windows.

As this was an upstairs window there were slightly more logistics to getting it down without it dropping a whole floor down into his back garden! While all our glass gets recycled, and we leave every job spotless, we don’t usually cater for extra time picking up broken shards - and to this day we’ve never had to!

While one of our team members climbed the ladder to support the exterior of the home, the other carefully removed the seal from both sides of the first window (outside first) and prepared the glass for removal.

After removing the second window and wiping down the inside of the window frame, we then installed the new and upgraded glass, ensuring a perfect seal to keep it secure and airtight.

From our judgement we expect that they were around a rating of C-B, which was probably quite efficient back in the day. However, times have changed and we were able to replace them with A++ rated double glazing.