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Based in Cheddar, Majestic Designs (UK) Ltd is one of Somerset's highly recommended double glazing specialists.

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How Do I Know My Double Glazing Needs Replacing?

15th April 2020 |

Double Glazing

Bow and bay Windows

If your windows are older than 20 years, it’s time to start thinking about replacement windows.

When you have your double glazing installed by Majestic Designs, your chosen windows will give you many years of maintenance-free service. But your existing double glazing might be old, and, having already given you the best years of durability and efficiency, you could be asking yourself, “how do I know my double glazing needs replacing?”.

Things to look out for

So how do you know and what are the signs you should be looking out for? If you know how old your double glazing is and it’s older than around 20 years, then it’s probably time to start thinking about replacement windows anyway. That way you can ensure your home gets maximum energy-efficiency.

But if you’re not sure how old your double glazing is, there are a few signs that will tell you it could be time for replacements. Beyond general wear and tear, such as having difficulty in opening, closing, or locking your windows, or any visible damage in the frames, there are a few key things to look out for.

Water leaks

Any water coming into your home has the potential to cause structural damage as well as internal damp and mould. There are two possibilities how this could happen. Firstly, if water is coming in from the uPVC window frame, the window seals may have failed. Secondly, the specialist sealant used between the uPVC frame and the window opening may have come away leaving gaps.

Golden Oak Casement Windows

If condensation appears inside of your windows, it could be a sign your double glazing is underperforming.

Condensation or window misting

Condensation on the outside of your windows is fine and nothing to worry about as it shows your home is keeping its natural warmth in. If condensation appears on the inside of your windows, it could be a sign your double glazing is underperforming.

You may also be experiencing unsightly window ‘misting’. This happens when the seals around your double glazed windows fail by splitting or cracking letting moisture in between the two panes. Not only is it impossible to get rid of, it’s another sign that your home’s double glazing is in urgent need of replacing.

Cracks or chips in the double glazing

Cracked or chipped glass is never good. While minor scuffs or scratches in your double glazed windows may be able to be polished out, cracks or chips are another sign urgent replacement is needed. Left alone, moisture will certainly get into the gas-filled gap between the panes resulting in misting or condensation (see above).


Double glazing is purposely designed and manufactured to give you a tight-fitting finish for a draught-free and energy-efficient home. If you can feel any noticeable draughts around your window, it’s likely the sealant around the window opening has failed. If you have draughts coming in between the glass and the frame, the weather seals may well have worn, cracked, or split.

Need to replace your double glazing?

If you’re seeing – or feeling – any of these issues, then it’s a good time to talk to us here at Majestic Designs about replacing your double glazing. Designed and manufactured to your own specifications in our state of the art factories, our A+14 rated double glazing is expertly installed by our own experienced fitters to keep your home warm, efficient, and draught-free.

Get in touch with the Majestic Designs Customer Service team through our contact form or call us on 01934 741 294 today.

With over 3,400 independent reviews on Fairtrades.co.uk, Majestic Designs are proud to have earned an above 9.48/10 rating in customer satisfaction Click to find out more

Customer Testimonials

“The fitting team were a credit. Clean, efficient and pleasant to know. Site left in a very clean state. Thank you.”

“All round excellent service. Used you in our previous home and was delighted with both installations you have done for us. Thank you.”

“I cannot fault anything & best thing I ever did. I am relieved & happy that I have attractive doors & windows. Thank you.”

“Thank you!”

Local area installations

Serving clients across Somerset and the South West

Majestic Designs install quality double glazing products throughout Somerset. From Taunton to Yeovil and Weston-super-Mare to Wells; our insistence on quality installations and outstanding customer care remains the same. With our factories and showroom in Cheddar, we are conveniently located in the heart of Somerset, with easy access to the surrounding towns and villages. As part of the local community, we are dedicated to improving the lives of all our customers and by employing a local workforce we are investing in the future prosperity of the area.

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