Double Glazing Repair & Installation in London

Tired of misted, cracked, or failing glazing making your London property colder? RR Double Glazing offers expert inspections, quick repairs, and custom replacements with free estimates and no call-out charges.

Fix Failed Glazing, Restore Comfort

Smarter Glazing for London Properties

To keep London homes comfortable in cooler winters, effective window insulation is key for heat retention and energy efficiency. The London Assembly notes double glazing as a way to enhance thermal performance and reduce energy consumption. In 2022, about 80% of London homes had fully double-glazed windows, compared to 87.7% across England, based on London Assembly analysis of the English Housing Survey.

For homes with single, outdated, misted or failed glazing, RR Double Glazing provides complete solutions for double-glazing in London, covering installation, replacement, repair and ongoing support. Enjoy a complimentary site assessment with no call-out fee, pay only after a successful installation or repair. Plus, every replacement is backed by a 1-year guarantee on parts and artistry, with pricing tailored to your specific glazing needs.

Get Started with Our Services

Double Glazing Done Properly

What are the Key components of High-efficiency Double Glazing?

High-quality and efficient double glazing relies on several key components within an insulated glass unit (IGU) to reduce heat transfer, lower noise levels, and prevent condensation. Our advanced double glazing features:

Low-E Glass: Helps reduce heat transfer while allowing natural daylight into your property, supporting a more comfortable indoor environment.
Inert Gas Filling: Argon or other suitable gases can be used between the panes to reduce heat transfer and improve insulation.
Warm-Edge Spacers: Help minimise heat loss around the edges of the glazing while reducing the risk of condensation.
Advanced Glass Coatings: Options such as solar-control coatings can help manage heat and sunlight, providing greater comfort throughout the year.

Testimonials

What Our Clients Say About Us

    
 
 
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   Faiza Memon 
 
 
 
 Trustindex verifies that the original source of the review is Google. Ravi and his team were really awesome . They listened to all my requirements. And produced what they promised at a high level. Ravis finishing is of very high standard and his prices are reasonable. He checks in with when u.. As his progressing through the job . I highly recommend him...
I will deffo use him again going forward !!!
  
 
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   Abdul Mannan Afzal 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great experience with having my kitchen doors and windows replaced. They did all the work and kept the place nice and tidy, very professional
  
 
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   Shally Kolawole 
 
 
 
 Trustindex verifies that the original source of the review is Google. Not only was Ravi, very polite and professional, he was very tidy as well.
  
 
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   Lesley Mitchell 
 
 
 
 Trustindex verifies that the original source of the review is Google. Although it took a long time...12 hours to fit a bay window and a single window they did do a good job..the finish is very good..well worth using them but I've knocked a star off because the mess they left me to clear up
  
 
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   Jigarkumar Patel 
 
 
 
 Trustindex verifies that the original source of the review is Google. Outstanding Service from RR Double Glazing Ltd!

I recently used RR Double Glazing Ltd to repair some faulty double glazed windows in my home, and I couldn't be happier with the results. From start to finish, the service was professional, efficient, and hassle-free.

The team at RR Double Glazing quickly diagnosed the issue—misty panes and worn-out seals—and offered a clear, affordable solution. They arrived promptly, were courteous and tidy throughout the job, and completed the work to a very high standard. My windows now look as good as new, with no more condensation or drafts.

What impressed me most was their honesty and attention to detail. They didn't try to upsell anything unnecessary and made sure I was 100% satisfied before leaving. It’s clear they take real pride in their work.

I would highly recommend RR Double Glazing Ltd to anyone needing window repairs. Reliable, skilled, and friendly—exactly what you want from a local company!
  
 
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   Tracy Anglin 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very polite professional did a great job
Extremely happy with service 5 stars
Would highly recommend
  
 
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   Kamal Miah 
 
 
 
 Trustindex verifies that the original source of the review is Google. Thank you RR Glazing.
Ravy came on time completed measurement and delivered an excellent job.
Clear on his communication, kept me posted, came on time and cleaned area before leaving.
Thank you RR Glazing, highly recommended and will use again.
  
 
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   Miss Don’t trip 
 
 
 
 Trustindex verifies that the original source of the review is Google. Ravi is a professional in his field. He has fitted both of my windows ,one last year in 2024 and one this year 2025. Excellent quality work, great pricing. He is professional, tidy and considerate. Highly recommend you give him a try.
  
 
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   Mojisola Adekoluejo 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very Efficient Calm and very Supportive.
Ravy is a good listener and a very understanding guy, always ready and attentive to detail, very good customer service and quick delivery.

RR double glazing can be trusted to get the job done and at reasonable prices too.

Thank you so much.

Expert Glazing for Every Property

Types of Double-Glazing Frame Options We Work With

RR Double Glazing works with uPVC and aluminium windows and doors, providing repair, replacement and glazing solutions based on the property’s requirements:

uPVC Double Glazing: We work with uPVC frames, a practical, low-maintenance option for residential windows and doors, with replacement glazing available for damaged, misted or failed units.
Aluminium Windows & Doors: We provide repair and replacement services for aluminium windows and doors, including hardware such as hinges and locks.
French Windows: We install uPVC and double-glazed French windows, including in-swing, out-swing and full-height configurations.
Made-to-Measure Units: We offer custom-made replacement double-glazed units, crafted to fit existing windows and doors, including those with misted, cracked, or failed glazing.

Same-Day Services

We focus on addressing your queries as soon as possible, providing same-day solutions whenever you need them.

PLI Insurance Approved

Our company is PLI approved, giving you the peace of mind that all the repairs will be handled professionally and covered financially.

1-Year Guarantee

All our replacements come with a one-year parts and workmanship guarantee, ensuring your peace of mind.

No Call-Out Charges

We don’t charge for site assessment and consultation; you will only need to pay us after the successful repair or installation.

Count on Us to Restore Your Windows with Confidence

Need professional double-glazing in London? Contact RR Double Glazing for a free quote and discuss the right repair, replacement or glazing service for your property.

Your Local Double-Glazing Experts

What Does a Complete Double Glazing Service Cover?

A comprehensive double-glazing service encompasses every stage, from initial survey and custom sourcing or manufacturing, to expert installation, regulatory adherence, and post-installation assistance. Our double glazing specialists:

Inspect existing windows, frames and glazing and identify the required work.
Take accurate measurements for made-to-measure glass or replacement units.
Supply and professionally fit new double-glazed windows or units.
Replace cracked, damaged, misted or failed sealed units without necessarily replacing the whole frame.
Replace complete windows where the existing frame is damaged, unsuitable or beyond repair.
Address common glazing problems, including broken glass, faulty hinges, locks and other window components where offered.
Replace failed sealed units affected by condensation between panes.
Assess the condition and operation of frames, hinges, locks and handles.
Ensure replacement units are properly fitted, sealed and finished.
Check that windows open, close and function correctly after installation.
Provide applicable artistry/parts guarantees and guidance following the work.

FAQ's

Can you repair misted double glazing without replacing the whole window?

Yes. If the existing window frame is in good condition, RR Double Glazing can replace the failed sealed glass unit without replacing the entire window frame. This restores clear views and improves insulation while avoiding the cost and disruption of a complete window replacement.

How much does double glazing in London cost?

The average cost of double glazing in London ranges from £480 to £1,200, depending on window size, glass specification, the number of units, and whether you need a replacement or a repair. Get in touch with us for a free estimate so the exact cost can be assessed based on your requirements.

Do I need planning permission for double glazing in London?

Usually, no, because replacing windows falls under permitted development. However, if your London home is a listed building or sits inside a strict conservation area, you will likely need local authority consent.

Can I get double glazing for period sash windows?

Yes, our London-based double-glazed window installers have the expertise to fit slim-profile units into original timber frames, preserving the historic character.

Will double glazing reduce my energy bills?

Our expert double glazing installation significantly reduces heat loss through your windows, helping to keep your home warmer and thereby lowering your heating expenses.

What is the difference between double and triple glazing?

Double glazing consists of two glass panes, whereas triple glazing includes three panes separated by two gas-filled gaps. Triple glazing provides better insulation and soundproofing, but in most cases, double glazing is adequate for typical homes.

Which type of glazing is better for London properties: double or triple?

In most London properties, modern A-rated double glazing offers the optimal balance of cost, thermal efficiency, and value. However, certain locations or property types may benefit more from triple glazing or a hybrid approach.