Welcome to SDG Windows Ltd

Established in 2010, we are a family-run business that have been installing double glazed windows and conservatories in South East London for over 15 years. We believe that our customer comes first which is why most of our work comes from referrals and recommendations. Our rapid response glazing team operates across South East London and Central London.

Family RunSince 2010FENSA Registered10-Year Insurance-Backed GuaranteeFree QuotationsSouth East London Specialists

We specialise in installing double glazed windows, doors and glazing across South East London.

Our Accreditations

Fully insured & guaranteed · 10-year insurance-backed guarantee

Our Range

Windows, doors and glazing. Expertly installed.

We supply and fit windows, doors and glazing across South East London.

Doors / Composite

We supply and fit composite doors, French doors, sliding patio doors, bi-fold doors and residential back doors, available in many colours, in uPVC, aluminium, wood and composite.

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Casement / uPVC

We supply and fit all types of windows, standard casement, flush casement, arched windows and bay windows, available in uPVC, aluminium and wood.

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Sliding Sash / uPVC

Our sliding sashes come as standard with run-through external horns, deep bottom rails and child restrictor catches, available in many colours in uPVC and wood.

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Welcome

uPVC Windows | uPVC Doors | Double Glazing

We are a well-established family-run double glazing business based in South East London. We specialise in installing double glazed windows, doors and glazing across London and the South East.

Established in 2010, we've built a strong reputation for professionalism and the quality of our materials and workmanship. We are a fully FENSA registered company and supply a 10-year insurance-backed guarantee on every installation.

Heat Loss Comparison

Heat loss, before and after.

Thermal imaging shows how much energy escapes through single glazed windows and doors, and how quickly modern double glazing puts a stop to it.

Thermal image, Before — BeforeRed areas show the heat loss from single glazed windows and doors.

Thermal image, After — AfterCool areas show how our double glazing keeps the heat inside.

Security

How secure is your door?

Bi-Folding Doors

Our Work

A gallery of some of our completed work.

Helping homeowners across South East London improve their homes with quality windows and doors since 2010.

Restored bay window in a period London home

BAY WINDOWS

Why Choose Us

A dedicated family workforce.

We are a dedicated family workforce established in 2010. We employ no commission-paid salesmen and no gimmicks. This allows us to keep our overheads low, so we can offer you a very competitive price for a high standard of workmanship and care.

Close-up of a composite door handle being installed

Family workforce
You'll deal with the same family team from first enquiry through to final inspection. No call centres, no handoffs.
No commission salesmen
We don't employ commission-paid salesmen and we don't use gimmicks. Fair, transparent pricing for the work in front of us.
FENSA registered · 10-year guarantee
Every installation is FENSA registered and covered by a 10-year insurance-backed guarantee.

I was very nervous about purchasing replacement double glazed patio doors and contacted four different companies. I decided to go with SDG windows because they gave me an honest quote and I was able to actually see the doors that I would receive displayed in their office. They made the whole process stress-free with their helpful and polite service, especially the main office person Vic. They were fast, efficient and clean and fitted quality patio doors that look great! I would definitely use them again.

Mrs French

Which? Trusted TraderFensa RegisteredEst. 2010

Real reviews from Google

“Our landlord had our rental property's windows upgraded recently from single pane windows to double glazing, by SDG Windows. The difference to noise pollution, heat loss, and energy saving is immense. The team arrived bang on-time and worked hard, non-stop for four hours to change the four windows in our flat. Their attention to detail was faultless and they tidied up as they went. The senior member of the team was friendly and chatted us through the working of the windows and locks etc. We are very happy with the results.”

Verified Google Review

“Fantastic people. I was looking to find a company that could replace some windows in my elderly aunts flat. I contacted Vic at SDG windows and from the very first email the communication was first class. They arrived on time to do the installation and the quality of their work was excellent and they were so clean and tidy. A big thank you to the team at SDG.”

Verified Google Review

“Having read the reviews, I first used SDG for one window whilst renovating the kitchen of my Victorian terrace. I wanted high end UPVC sashes, as close to looking like wood as I could get. Vic was great from the start and chatted through all the options. I was so pleased with the result that I ended up using SDG to replace the rest of the windows in the house. The result was exactly what I wanted, with the finish on them so good that the decorator was certain they were wood. I've gone on to recommend SDG to several neighbours in my street, all of whom are equally delighted. Vic, Shaki and their team are highly skilled and a pleasure to deal with, the product was perfect and the price was very reasonable. I would wholeheartedly recommend SDG in a heartbeat. They're a real asset to the area.”

Verified Google Review

“We recently had 5 UPVC windows installed by SDG Windows, and we couldn't be happier with the results! From start to finish, Vic's communication was excellent, clear, friendly, and always quick to respond. He worked with our budget and delivered exactly what we wanted. On installation day, the team arrived right on time, worked efficiently, left everything clean and tidy and were quick! The new windows are great quality and have really improved the look and feel of our home. Great service all round, I highly recommend SDG Windows! Thanks Vic!”

Verified Google Review

“We had a great experience getting all new windows for the whole house and new front and back doors. The workmen that installed them did a great job and left very little mess / tidied up the corking / sealant on the old window ledges really well. Service was great working with Vic from beginning to end. Had the FENSA certificate with grantee delivered shortly after installation also. Added the windows being French door style to half the windows and are a really happy with how they work! Price was very reasonable and didn't include the questionable / dishonest charges that another very well known national company gave us. Would really recommend contacting them as was no pressure at all and was easy to organise from beginning to end!”

Verified Google Review

“Excellent company and great price, we had 7 windows replaced over 2 days. 5 Sash windows windows at the front and 2 casement windows at the back. Workmanship, quality and finish was excellent and the guys were clean and tidy too. Would definitely recommend to everyone. 5* stars all round.”

Verified Google Review

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