Window Condensation Removal and Reseal
Repair or replace misted double glazing
When the seals fail on double glazed units there used to be little you could do about it in terms of repairs, the double glazed units will simply have to be replaced. However, there is now a cheaper option where companies can actually reseal the window units without even removing the frames, which is obviously much cheaper offering a saving of around 50% against typical replacement costs! The resealing or replacement of double glazed window units is definitely not a DIY job as the units need to be manufactured to size in the case of replacement and special equipment is required to reseal them if you choose that route.
Typical prices for double glazing repair and replacement
Things to consider with double glazed units
Replacing your double glazing should be considered an investment in your property as it will improve the energy efficiency making your home easier to sell and cheaper to heat. However, double glazing is expensive even if you are just replacing the glazing and using the existing window frames. For this reason, many homeowners will often choose the cheaper option of resealing the existing glazing if the problem is simply condensation inside the unit. But if the glass/sash or frames are damaged the only option is a replacement.
If your double glazed window is fogging up between the actual glass panes this usually means condensation is building up and the seal between the panes is damaged. Not only is this unsightly, but it also greatly reduces the energy efficiency of the double glazing. Keep in mind however that the resealing is not usually possible on toughened glass units or units that feature Georgian bars or other bar inserts. Resealing is also not applicable for Velux windows or timber windows with very narrow air gaps.
Doing it Yourself
To reseal double glazed windows requires specialist and expensive equipment so this is not a feasible project for a DIY enthusiast. If replacing the double glazed units then you would typically get a local joiner in to measure up and then order the windows directly from double glazing manufacturer. However, you can, in theory, measure up yourself and deal directly with the glazing manufacturer. But your measurements have to be precise as any small mistakes will result in you receiving expensive double glazed windows which will not fit in your existing window frames.
If this happens, a refund will not be available as this is your fault so the only option would be to measure again correctly and pay for the windows twice! Fitting new double glazed units is not a difficult job, nor is it time-consuming. So, although you can save some money by going the DIY route, the savings will not be substantial. Therefore, most homeowners will simply hire a local window fitter or specialist company to do this job on their behalf.
Double glazing repair checklist
- Double glazed units can be resealed for half the price of a replacement
- Toughened glass double glazing cannot be resealed
- Misted up double glazed windows can greatly reduce the energy efficiency
- Replacement double glazed units are more expensive but more durable
Hiring a Tradesman Checklist
- Always get at least 2 quotes before hiring.
- Never pay the full amount upfront.
- Get the quote in writing.
- For any payment you make, always get a receipt.
- On more expensive jobs, ask for references.
- Check if the tradesman is a member of any trades associations.
- Make sure the tradesman has public liability insurance.
My double glazed unit has condensation inside the window can this be repaired?
My double glazed back door has misted up inside the pains, can this be resealed?
Which is best, replacement or reseal?
I have condensation in between the glass panes of my double glazed window, does this mean the seal is broken?
Do I have to fix misted up double glazed windows?
I would like to instal a cat flap to go in a glass panel in my kitchen door double glazed.
Submitted by Tamara
I'm wanting the glass changing in most of the windows as they are old and now have condensation. They are double glazed.
Submitted by Natasha
Install cat flap into a double glazed window.
Submitted by Dee
To supply and fit french hardwood double glazed external doors.
Submitted by Pauline
Would like original sash windows in Victorian terrace house replaced with double glazed sash style windows (2 windows upstairs and 3 downstairs).