Conservatories can become the hub of your home.

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Our windows will make your home stand out.

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Stunning designs, and unparalleled security.

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Fascias & Soffits can make a real difference to the appearance of your home.

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We are continuing with installations

On January 4th, prime minister Boris Johnson announced England would enter a third national lockdown. Fensa approved Installers
are permitted to work in people’s homes in England & Wales under the new lockdown, provided they follow Covid
safety protocols.

We will need to postpone the installation if any person in your household has had COVID-19 symptoms, however mild, within 14 days of the installation date. Read more

Welcome to Sidcup Double Glazing

‘A’ Rated windows as Standard

We are installers of quality UPVC windows, doors, conservatories, fascia soffits, porches and other related products and services.

All of our products are high quality and are available at an affordable price along with expert advice and a quick and efficient installation service.

Call us now on 0208 298 0068 for a FREE quotation


    All our products are made from start to finish right here in Britain by expert craftspeople to our very high quality standards so that they fit perfectly.

  • Advice

    At SDG we offer honest advise, we are committed to providing high quality products and services for all our customers.

  • Installation

    Our fitters are MTC qualified, experienced teams, who have spent many years fitting windows, so you know the work is carried out by professionals.

  • Product Types

    We provide a wide product range of windows, doors, conservatories, fascias, soffits & gutters.

  • Ease of Contact

    We are always available to take your call whatever your query.

  • Quality assured

    All our windows are guaranteed and always to the best quality available.


Was recommended by a friend who had windows replaced by this company at a third of the price quoted by a well known big company. I have had a new front door and am absolutely delighted with it. I can not fault the service and will recommend to my friends. Thanks

Linda Coplestone

I would like to thank the staff of Sidcup Double Glazing for doing an excellent job. They were very professional and punctual. The team who installed the windows were very good tradesman. The rooms were left spotlessly clean. I have no hesitation in recommending Sidcup Double Glazing. From Garry’s visit to my property to price the job through to completion of the work they are to be commended.

Marion Moore

From start to finish the team were helpful and professional. Windows look great and make the house much warmer.

Jan Austin

We had several windows replaced (2 bay windows plus 3 others) and decided to go with Sidcup Double Glazing. The first visit was very professional and the quote was competitive. For all appointments they showed up on time and the job was finished a day early. Staff is very friendly and respectful of the house. Everything was cleaned up afterwards and we couldn’t be happier. The windows look great. It is a family run local business and we would go back to them anytime.

Miriam Messmer

No complaints- everything went smoothly, thank you.

Jean Oughton

Professional fitted windows, good quality work, competitive price, would recommend.

Stuart Low