Double Glazing Croydon

About Alphaglaze

Alphaglaze (Croydon) Ltd is a well-established Double Glazing company with a reputation for consistantly providing Professional & Quality Workmanship for our Valued Customers, as well as Excellent Customer Service and Aftercare. Boasting over Twenty Years of experience in the industry, we are well practised in the Installation of most Double and Triple Glazed Doors, Windows, Porches and Conservatories.

The Supply & Installation Services offered by Alphaglaze include many styles of Double Glazed uPVC & Aluminium Windows; Standard & Fire-Rated Composite Doors, uPVC Double Glazed Entrance Doors, Sliding Patio, French and Bin Cuboard Doors, Aluminium Bi-Folds, uPVC Double Glazed Conservatories, Porches and Roof Lanterns. We also offer all aspects of UPVC Roofline Products, including Fascia, Soffit, Guttering & Downpipes, as well as uPVC Cladding.

In addition to the Installation side of Alphaglaze, we also offer a Service & Repair Service, including the replacement of Double Glazed Sealed Units, Window & Door Handles, Hinges and Locking Mechanisms and General Servicing.

Working within an approximate 5-mile radius of our Croydon-Based yard, including all CR & BR postcodes plus some areas of SE, TN, SM, RH and KT postcodes. Having built the best part of our business by way of customer recommendation and referrals our reputation is very important to us and we will always endeavour to respond to enquiries within 1 working day, either by telephone or email; and we will also provide a full written quotation to those customers that we visit within 48 hours. Regardless of the size of the job, all enquiries will be seriously considered.

Alphaglaze is proud to confirm that it is affiliated to Fensa, Checkatrade and Which Trusted Trader; Our Installation teams are MTC Qualified and we are always looking for feedback (both positive & negative) from our clients in order to maintain & improve our business.


Casement Windows

UPVC casement windows are our most popular choice and offer a practical and stylish solution to complement any home. Available as fixed panes or opening casements in a wide selection of styles, colours, and glass options, you can tailor them to your exact requirements. Whatever style you go for, you’ll find our casement windows aren’t just pleasing on the eye, they’re practical too. Their low maintenance UPVC frames will look as good as new for years to come Each UPVC casement window will be tailor-made to you and your home and manufactured to your exact specification with your choice of frame, glass and configuration.

Why choose our UPVC casement windows?

  • Our best-selling window styles
  • Designed to complement both traditional and contemporary homes
  • Energy efficient – can help reduce your heating bills 
  • Help to reduce condensation
  • Secure – multi-point locking system for enhanced security
  • Effective noise reduction – cutting down sounds from outside
  • Added heat retention
  • Multi-chambered uPVC frames
  • 10 Year comprehensive guarantee - for total peace of mind
  • Click Here to View Our UPVC Windows gallery

Sliding Sash Windows

Our sash window range combines the elegance of traditional sash windows with the benefits of modern materials. Manufactured from uPVC they are strong, will not rot, warp, or require repainting; ensuring that they retain their colour and shape throughout the years with the minimum amount of maintenance.  Whether replacing existing traditional timber sliding sash windows in period buildings or adding character to any new development, these stunning windows come complete with an easy clean facility for practicality as well as performance and aesthetics.

Why choose our UPVC sliding sash windows?

  • A traditional, timeless, and elegant window style
  • Designed to complement both traditional and contemporary homes
  • Energy efficient – can help reduce your heating bills
  • Secure - multi-point locking system for enhanced security
  • Extensive choice of design options available
  • Range of handle colours to complement the finish of your windows
  • Added heat retention
  • A wide range of glass designs, from leaded to Georgian bars
  • 10 Year comprehensive guarantee - for total peace of mind
  • Click Here to View Our UPVC Windows gallery

Bay & Bow Windows

Transform your home with bow and bay window installations. You can choose from a wide selection of attractive uPVC designs and create the perfect double glazing addition for your living space.

What is a Bay Window?

Typically, a bay window can be angled or square and is constructed of between 2 and 6 uPVC casement windows; the ultimate double glazed window providing functionality and style to your new bay window.

What is a Bow Window?

A bow window is usually made up of 3 or more uPVC casement windows and planted onto a flat wall. Usually constructed in a semicircle configuration and often finished with a canopy above.

Whether you are after a bay or a bow design, Alphaglaze have the perfect style of uPVC window to complement your home.

Click Here to View Our UPVC Windows gallery

Tilt & Turn Windows

Tilt and turn windows allow you to tilt the window inwards, for ventilation, or alternatively open fully inwards which allows for easier cleaning. Furthermore, this versatile window solution can also be incorporated within bay and bow styles and is available with a variety of glazing options, including Georgian bar, leaded lights, and obscure glass.  Each uPVC tilt and turn window is tailor-made to you and your home, expertly manufactured to your exact specification with your choice of frame, glass, and configuration.

Why choose our UPVC tilt & turn windows?

  • A versatile and flexible window style
  • Designed to complement both traditional and contemporary homes
  • Energy efficient – can help reduce your heating bills 
  • Help to reduce condensation
  • Secure – multi-point locking system for enhanced security
  • Effective noise reduction – cutting down sounds from outside
  • Added heat retention
  • Multi-chambered uPVC frames
  • 10 Year comprehensive guarantee - for total peace of mind
  • Click Here to View Our UPVC Windows gallery

UPVC Front and Back Doors

Our range of uPVC Panel doors offer a wide variety of finishes and styles from simple glazed designs to more ornate options suitable for the contemporary or traditional home.

As well as being beautifully made, each door is designed to stand the test of time, so they not only act as a security barrier, they also enhance your home. Our range of panel doors are available in a variety of styles and configurations with both low and standard thresholds, open in/open out and side light combinations.

In addition, a comprehensive range of glazed-in panels and/or glass are available to create individuality and style. Fully glazed or with the addition of a mid-rail and glass/uPVC panel option provides the opportunity to be innovative in design.

Why choose our UPVC doors?

  • Available in a huge choice of designs, style & colour options
  • Designed to complement both traditional and contemporary homes
  • High security performance with advanced locking system
  • Thermally-efficient with excellent insulation properties
  • High weather performance and enhanced durability
  • Low maintenance - no painting
  • A wide range of hardware options to compliment your door
  • 10 Year comprehensive guarantee - for total peace of mind
  • Click Here to View Our UPVC Door Gallery