Is It Worth Replacing 20-Year-Old Double Glazing?
Double glazing that is around 20 years old has come along way, but so has improvements in modern window systems. If your current windows are feeling draughty, difficult to use or misted, it might be time to consider whether a replacement is needed.
It doesn't mean that every single old window needs replacement right away. Some 20 year old double glazing may still be performing very well, whilst other windows in the house may be showing clear signs that frames, glass units or seals are starting to fail.
In this artcile, we will explain how you can check the condition of your double glazing, when repairs might be enough or when replacement is a better long term choice.
Quick Verdict
If your current 20 year old double glazing is showing signs of failing, replacement is usually the best choice. If it is still performing well, carrying out a repair might be enough.
20-Year-Old Double Glazing Health Check
Have you noticed any of the following issues:
- Condensation & Mist between the glass panes.
- Draughts coming in around windows
- Hard to operate, stiff handles
- Rooms that feel really cold or take along time to get warm
- Warping, damage or cracks to frames
- Increased levels of noise from outside
Repair or Replace?
Use these tips to help you decide what might be the better option for your home.
Repair May Be Enough
Repair might be enough if the windows are still in good condition and only a small part has failed.
- Condensation on the inside of the window
- Draughts from seals
- Handles that need replacing or adjustment
- Worn lockes and hinges.
- Frames are in good condition
- Glass units are clear and intact
Replacement May Be Better
Replacement might be required if the windows are failing and are no longer keeping the house comfortable.
- Condensation between the panes
- Increase in draughts and cold spots.
- Increasing energy bills
- Damaged window frames or discolouring
- Outside noise has become louder
- You want a better design and security
Repair vs Replace: What’s The Difference?
| Factor | Repair | Replace | What It Means For You |
|---|---|---|---|
| Cost | Lower upfront cost | Higher upfront cost | Repairs cost less now, replacement may save more later |
| Energy Efficiency | Small improvement | Significant improvement | New windows may help reduce heat loss |
| Lifespan | Short-term fix | Long-term solution | Replacement gives longer-lasting reliability |
| Comfort | Minor improvement | Warmer home, fewer draughts and less noise | More consistent comfort throughout the year |
| Property Value | Minimal impact | Adds kerb appeal | New windows can make the home more attractive to buyers |
Common Signs Your Double Glazing Is Failing
You Might Not Need New Windows Yet
If your windows are draught-free, clear of moisture and your home is comfortable, you might not need a replacement right now.
A professional can carry out checks to confirm if the window needs repair or replacement.
Honest advice today can help to save you money.
Benefits Of Replacing Old Double Glazing
Lower Energy Bills
Modern double glazing can help to reduce heat loss and make your home warmer.
Improved Comfort
A warmer home with fewer draughts can feel more comfortable throughout the year.
Quieter Home
Better insulation can help reduce the outdoor noise.
Better Security
Modern double glazing, frames and locks can help improve security.
Frequently Asked Questions
How long does double glazing last?
Double glazing can last for a very long time, however performance can reduce over the years. The lifespan usually depends on the quality of the installation, windows, glass unit, frame material and maintenance.
Can I just replace the glass and keep the frames?
Yes, in some cases you can just replace the glass unit in the current frame. However, this will depend on whether the frames are still in good condition and the problem is only the glass sealed unit.
How much does it cost to replace old double glazing?
The cost will depend on the frame style, glass, number of windows and installation requirements. The best way to get a price is to request a quote from our team.
Will replacing my windows be disruptive?
Most window installations can be completed with very little disruption, although this depends on how many windows are being replaced and the condition of the older frames. A professional installer can tell you what you can expect before any work is carried out.
Not sure whether to repair or replace?
We can assess your windows and give you an honest recommendation and the most cost-effective option for your budget.