rosette icon

10 Year Guarantee

Available on all products

energy icon

Energy Saving Products

A+ rated window & doors

price icon

Competitive Prices

Value for money

team icon

Qualified Team

Strict industry standards

A Hallmark Composite Door.
The inside of a green Solidor door.
A Hallmark Composite Door.

GRP composite doors in High Wycombe & the surrounding areas

Balancing affordability, quality, and performance in equal measures, Hallmark and Residor lead the market for resilient, durable, and low maintenance GRP composite door replacements.

Available in a variety of entrance arrangements (including ventilating stable doors) and 20+ traditional and modern composite front door designs, whether it's an eye-catching yellow composite door or an elegant traditional design, we’re confident we can tailor the perfect front door replacement to enhance your High Wycombe property’s unique character.

Browse through our varied collection of door styles, colours, finishes, and glazing options at your leisure and create the building of your dreams with ease.Visit our downloads section below for full details.

Our Installations
A Hallmark Composite Door.
A Hallmark Composite Door.

Resilient Composite Doors for properties in Chiltern Hills, Amersham, High Wycombe & beyond

Available with insurance and Police approved locking systems, Hallmark Panels and Residor composite doors are two of the most secure GRP composite doors available to-date. Going through extensive testing and checks, both brands can achieve the sought-after PAS 24: 2016 Enhanced Security Performance status with ease.

Looking for a solid core composite door instead? Then take a peek at our industry-leading Solidor composite doors.

Get in Touch

Energy saving composite doors for homeowners across High Wycombe & the South East

Our entire door collection is chosen with cost-effective, energy-saving features in mind. Hallmark composite doors are 19% more energy efficient than most 48mm solid core composite doors, making them capable of achieving outstanding A++ Door Energy Ratings and U-values as low as 0.8 W/m2. Keeping bills low and satisfaction high, our Residor composite door products can achieve maximum U-values of just 1.3.

The unique combination of weather-resistant Glass Reinforced Plastic (GRP), an insulating high-density foam core, and a single or double rebated frame delivers outstanding insulation where it's needed most, whereas solid core composite doors come out on top for enhanced security features.

Get In Touch
An open Solidor door.
  • Colours
  • Glass Options
  • Accessories
  • Security
  • Downloads
  • Colours

    Whether your improvement plans require a standard Anthracite Grey composite door, a premium Pastel Blue composite door, or something a bit more vibrant to match your personality, finding the best fit for your project is incredibly straightforward with a Double Glazing Direct composite door installation. The Hallmark range is available in 9 standard colours, 27 premium shades, and over 150 RAL colours, whilst the Residor collection can be tailored in 5 standard colours, 3 frame colours or 250+ RAL colours. Along with diverse dual-colour options, a world of colour awaits!

    Rosewood

    Rosewood

    White

    White

    Irish Oak

    Irish Oak

    Black

    Black

    Chartwell Green

    Chartwell Green

    Cream

    Cream

    Golden Oak

    Golden Oak

    Anthracite Grey

    Anthracite Grey

    Glass Options

    Our energy efficient GRP Residor collection can achieve maximum U-values of just 1.3 W/m2. Whereas our Hallmark doors are capable of achieving A++ Door Energy Ratings & U-values as low as 0.8. With thermally-advanced double and triple glazed options, all glazed units available from Residor utilise temperature-modering Low-E glass and are filled with Argon for increased sound insulation too. We also have an attractive range of decorative glazing, perfect for intricate heritage projects, adding privacy, and one-of-a-kind installations.

    Cassini

    Cassini

    Tribal

    Tribal

    Taffeta

    Taffeta

    Warwick

    Warwick

    Reeded

    Reeded

    Pelerine

    Pelerine

    Oak

    Oak

    Mayflower

    Mayflower

    Minster

    Minster

    Everglade

    Everglade

    Florielle

    Florielle

    Charcoal

    Charcoal

    Contora

    Contora

    Digital

    Digital

    Chantilly

    Chantilly

    Accessories

    From contemporary inline bar handles to traditional door knockers that add a touch of class, Hallmark Panels and Residor have a charming selection of superb door accessories. With antique, architectural, and classical handle styles available in stainless steel, antique black, black, chrome, gold, silver, and white, we're confident we have the perfect finishing touch for your new GRP composite door to truly make it your own.

    brown front door glass

    Security

    As well as optional advanced laminated glass or triple glazing, and one of the most secure door locks included as standard (Residor), all of our GRP composite products undergo extensive testing and checks. This means they can achieve the sought-after PAS 24 Enhanced Security Performance status, for peace of mind they can resist physical attacks by opportunist burglars.

    Learn more about our window and door security features.

    black front door

    Downloads

    Browse more door styles:

    What do our customers say?

    See more reviews

    Very quick and professional service

    I am very impressed, my home is much improved. Very professional. Prompt. Punctual. I highly recommend. THANK YOU ALL. I have just been in contact with Double Glazing Direct regarding...
    Read more

    Damien Martin

    Google

    We will be going back to Double Glazing Direct

    Double Glazing Direct changed our very old and leaky polycarbonate conservatory roof to a new solid roof as well as changing the windows and doors of the same area. From...
    Read more

    Buckinghamshire

    Which?

    ‘Double Glazing Direct’ were brilliant.

    They were extremely polite and professional. Before they started the work on the day of installation, taking out the existing windows, they prepared the area with dust sheets and special...
    Read more

    Greater London

    Which?

    Great job, professional service

    Replaced an old aluminium frame patio door with updated upvc doors. Work undertaken very professionally, leaving the area clean and tidy afterwards. Noticed a very slight imperfection upon completion but...
    Read more

    Buckinghamshire

    Which?

    I would highly recommend

    Marc and his team did an excellent job of replacing our conservatory glass roof with a Guardian Warm Roof. Work started on time and was completed within the stated time...
    Read more

    David Tomlinson

    Google

    Outstanding Service

    We had many issues trying to locate a company to replace our conservatory roof however, this company was recommended to us by a friend of a friend and we couldn’t...
    Read more

    Buckinghamshire

    Which?
    DBC checked accreditation
    CHAS
    fensa
    Which Trusted Trader logo
    bfrc logo
    trustmark-logo
    Green Deal APproved Certification Badges

    Sign up to our newsletter

    Sign up for the latest advice and home improvement inspiration