UPVC Blown Windows Glazing
Replacement Windows
Glazed units needing Replaced
What is a blown window?
Can failed double glazing be repaired?
Technically yes, blown double glazing can be repaired, but we really don’t recommend it! Essentially, the seal can be fixed with a repair by simply renewing the seal on the entire window, but this won’t help the misting or condensation already within the panes.
You can get a DIY misting repair kit from Amazon – in our experience using one of these can cause more harm than good. It involves drilling a small hole into the window, leaving the window to clear as much as it can, cleaning the inside of the panes with a magnetic tool, inserting drying pellets that eventually disappear and plugging the hole with the provided clear cement.
You will also have to re-seal the unit, and these repairs will need doing regularly. The best way to repair blown or failed double glazing is a complete replacement of the windowpanes.
Argon Gas Filling
Many modern double-glazed units now use argon gas instead of air between the panes. This inert gas has a higher density than air, offering superior thermal performance and reducing heat transfer.
Do I need to replace the window frames as well?
In most cases, you won’t need to replace your frames to fix your failed double glazing! Replacement double glazed units are a much cheaper alternative to installing new windows. A misted-up window is due to the seal on the glass, which has nothing to do with the frame itself. As long as the frame is in good condition, you simply need to replace the glass unit inside. When performing double glazing repairs, it is a great opportunity to upgrade the glass to A-Rated Energy Efficient to get better insulation and lower your heating bills