Welcome to 1st Double Glazing

1st Double Glazing are a national company, based in London, offering the supply and or installation of purpose built replacement windows, doors, conservatories, and porches in either PVCu, timber or Aluminium.

Our staff have many years experience behind them and are proud to offer a personal service, handling the project from concept to completion.

When choosing a new Conservatory or Porch, we have our own in house builders to carry out all necessary ground works and construction, plus our own fitting teams to ensure the installation is carried out with the minimum disturbance.

Our Design Consultants can arrange a free site survey to offer free advice on design and will follow that up with a computer based drawing and quotation with no obligation to yourselves.

All of our products come with an IPWFI Insurance Backed Guarantee. Click here for more information.


Using this web site

Select which product range you would like to browse from the links to the left of the page. From there will be given options to view specific product information.

If you would like to receive details of our latest special offers, sign up for our email newsletter via the box to the left of the page.

If you would like to get a quote for any of our products, please complete our short contact form and we will get straight back to you.