Failed Double Glazed Units

Replace failed or broken double glazed units in your existing frames

We have been replacing broken double glazing and misted windows since 2000 and have thousands of satisfied customers in Bury, Manchester and beyond. We are a FENSA registered window and door installer so our years of experience makes changing failed double glazing quick, simple and hassle-free, whatever type of double glazed window you own, saving you money on changing the entire frame.

Other general repair work on your windows and doors is also available. Services like hinge and lock changes, resealing and door re-aligning can all be discussed. Give us a call to check our availability.

Why choose us?

Why choose us

Free comprehensive no obligation quotations

No employed pushy salesmen, just honest advice and competitive pricing

We cover all Greater Manchester areas

FENSA registered

Secure, A-rated energy efficient windows and doors

Insurance backed workmanship guarantees

Award winning, qualified tradesmen in each field

Get in touch today to see how we can transform your home

FAQs

Can you replace double glazed units?

Yes, if your existing glass has broken or failed (moisture between the glass) in your existing uPVC frames, we can supply and fit new sealed units for you.

Only one side of my glass unit has broken. Will both pieces need to be changed?

Yes, double glazing comes as a sealed unit so both sides will need to be changed.

Is all double glazing the same thickness?

No, double glazing can vary in thickness depending on the frames you have.

Can I upgrade the quality of the glass in my windows?

Yes, with the continuing improvement of the industry glass units are better than ever with energy rated glass and argon gas filled units now available.

Can I have security glass?

Yes, we can fit many different types of glass to your windows including toughened and laminated glass.

Check out our reviews

I couldn’t be happier with the service and quality from K and M Installs Ltd. K & M Installs have just fitted a full house of windows for us, back and front, plus new front door and side door (in just 3 days!) and we couldn’t be happier with the service and quality of workmanship. Kris was patient and helpful during the design stage, very responsive throughout, and his team were hard working, really friendly and went above and beyond during the installation. I wouldn’t hesitate to recommend K & M Installs.

Karen

Google review, 5 stars

I cannot thank Kris and his lads enough that came to fit the new bathroom window and bedroom window on 20/11/25. From the very outset Kris’ company was professional. A huge tick returning my call to get a quote. Second big tick actually turning up when Kris said he would. And the biggest tick was the fitters. Not only did they arrive on time. They treated our house like it was their own home. Covered everything (I had just had new carpets fitted) cleaned up after they had finished, actually leaving the two rooms cleaner than when they first started. Their workmanship was immaculate. I cannot sing their praises enough. Please do approach this company for a quote and their work. You will not be disappointed. I would highly recommend them. Thank you again Kris and the lovely lads that came to fit.

Claire

Trustpilot review, 5 stars

Used K&M for all our replacement windows and now for the install of patio doors. Looks incredible, so happy with it. Install team were great, a credit to the company. Pleasant to have in your home and worked hard to clean up & finish it all to a top standard.

Paul

Yell.com review, 5 stars

I had K and M Installs back to do the work because I was very happy with the previous work that they did replacing some windows. I chose them via a recommendation and am confident to recommend them to family and friends. They are professional, pleasant to work with and I think reasonably priced to offer a good product. My house is now far more effective in retaining heat. Thank you K and M for a smooth experience.

Customer

Check-a-trade review, 10/10

I can not recommend this company enough. The quality of their work was excellent and the team were really professional and efficient from start to finish. I will definitely use them again in the future!

Linda

Rated People review

We would highly recommend K and M Installs. All the way through the process of obtaining a quotation to installation of new windows and doors, they were very professional. Nothing was too much trouble even when we asked them to do additional work. Very competitive pricing too. It is now two weeks since all the work was completed and we have received so many compliments. Looks like a brand new house. Thank you Kris to you and your team.

Customer

Review on Facebook

Accreditations

As a well established company we are proud to have been fully certified and registered with Fensa for over a decade. This brings automatic reassurance to our customers as it means all the work we do meets legal and safety standards. We undergo regular assessments to maintain our certification ensuring high quality workmanship and compliance with industry standards. It also brings peace of mind as all dealings with building control are done through us to avoid the hassle of dealing with the local authority directly. A certificate and 10 year insurance backed guarantee are issued on completion (this is crucial if you come to sell your home). All in our customers can enjoy a streamlined process and have assurance of a quality and compliant installation.