Conservatories can become the hub of your home.

REQUEST A QUOTE Call us on 020 8298 0068


Our windows will make your home stand out.

REQUEST A QUOTE Call us on 020 8298 0068


Stunning designs, and unparalleled security.

REQUEST A QUOTE Call us on 020 8298 0068

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.

  • 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.


First class work. Easy to deal with. Beautiful door. Highly recommended.

Ian Black

Absolutely delighted with work carried out which included facias, soffits, guttering, 2 bays and 4 windows. The team were professional, punctual, polite, tidy and work has been carried out to an exceptionally high standard. Contact and communication with company has been flawless. I cannot recommend highly enough, one very happy customer here!

Debra Manclark

“I approached a few companies about getting a new window fitted in the kitchen, speaking with SDG it was clear that the reason the previous owner had not upgraded to double glazing was because the door shared a frame. I was quoted for a new window and door which seemed a reasonable price compared to other companies. The team that came round to install them were great, the install date was even brought forward by a day. A very high standard of work and even the whole area indoors and out was left spotless. Great to work with from initial quote, survey to install.

Fraser Wood

Our builder used SDG when he completed our extension so it was a no brainer when we wanted 8 new replacement windows for our home. Excellent on the day of installation. Great value for money. Really friendly service. Would always recommend.


Can’t recommend Sidcup Double Glazing enough, there was no hard sell a reasonable price and a great service from start to finish.

Robert Newton

I can’t rate this company enough, from the start to the finished job it was smooth and professional. The lads were great workers and a great quality finish with their work. They have been very helpful and made sure I was completely satisfied before payment requested. I would recommend them fully. They work best when supplied many cups of tea 😉

Linda Taylor