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Upgrading to a composite entrance door is a fantastic decision for your home. Featuring an insulating core and a Glass Reinforced Plastic (GRP) skin, they can offer a range of fantastic benefits. At Double Glazing Direct, we offer both Hallmark and Residor composite doors for homeowners to decide between. You may be wondering what the benefits and features of each are before you commit to one or the other. We have created this informative blog to outline the key differences between Hallmark and Residor composite doors.

Here is a helpful table we have created to provide you with the key information about each composite door, to assist your decision.

Hallmark composite doors Residor composite doors
Core material Polyurethane foam core Insulating foam core
Energy efficiency  Can achieve exceptionally low U-values of 0.8 W/m2k Can reach U-values as low as 1.3 W/m2k
Security High quality multi-point locking systems fitted as standard Fitted with the market-leading Ultion lock & multi-point locking systems as standard
PAS24 compliant & always Secured by Design PAS24 compliant
Glazing available  Toughened double glazing in over 17 textures, including sandblasted Double glazing is available in over 20 decorative glazing options
Customisation options Available in 5 slab styles, 175 door designs & 1000s of colour options Available in 16 different styles and over 250 RAL colours
Huge selection of hardware and handle options Selection of hardware & handle options in 5 colours
Option to design your dream door Option to design your dream door

Learn more about our Composite Doors

Thermal performance: Hallmark vs Residor

A Hallmark Composite Door.

Our composite door collection has been carefully selected with thermal efficiency and energy-saving features in mind. We want our customers’ homes to retain a comfortable temperature all year round whilst they simultaneously save on their monthly energy bills.

Our Hallmark composite doors offer some of the best thermal performance on the market. Featuring a Polyurethane foam core that keeps the elements at bay, ensuring your home stays warm in the winter and cool in the summer. The Hallmark composite door is able to achieve energy ratings of A++ with U-values as low as 0.8 W/m2k.

Residor composite doors are pressure filled with a thermal insulating foam core to achieve incredibly low U-values of 1.3 W/m2k. This outstanding performance helps your home remain a comfortable temperature regardless of the exterior conditions. You’ll notice your monthly energy bills starting to decrease.

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Home protection: Hallmark vs Residor

Both Hallmark and Residor composite doors feature a GRP skin that is wrapped around the door panel. It keeps your home protected by eliminating vulnerabilities within the door structure. Our composite doors are resistant to scratches, warping and rotting. You’ll never need to worry about your door becoming weak or losing its attractive finish.

a black composite door on a brick wallThe Hallmark composite doors feature high-quality multi-point locks as standard in order to firmly secure the door panel within the frame. Manufactured using the Winkhaus heritage security system, you’re able to customise your locking type to suit your preference. Whether you’d like an internal key, thumb turn, or a ring pull plate with a slam-shut operation, we have the perfect high-security option to keep your home and family safe.

Residor instead uses the market-leading Ultion lock to keep your home protected. When attacked your lock will go into a lockdown mode. The hidden lock within the Ultion will automatically engage so intruders are unable to gain entry even if they manage to snap the lock twice. The Ultion locking system features 11 multi-point pins whereas other available locks only feature 6. Manufactured with GRP skins as thick as 3.6mm compared to the 1.6mm skins used for alternatives.

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Design possibilities: Hallmark vs Residor

Our composite entrance doors are available with endless customisation opportunities so you’re able to create a fully bespoke door for your home. Although both Hallmark and Residor are incredibly similar there is a variation in their customisation options.


  • Available in over 1500 colours and finishes
  • The frames can either be chamfered or sculptured
  • There are 5 different slab options to suit property styles
  • Stable door designs are also available
  • Decorative glazing is available in over 17 textured glass designs
  • A variety of threshold options including low and mobility thresholds
  • Huge selection of hardware and handle options in a variety of popular shades


  • Available in over 250 RAL colours and finishes
  • A selection of modern and traditional slab options
  • Customisable frames can incorporate side and top lights
  • Available in well over 20 decorative glazing options
  • Handles and hardware are available in 5 popular finishes
  • Decide which way your door will hinge

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So, which composite door should I choose?

There really is no right or wrong answer to which composite door you should choose. Both Hallmark and Residor are exceptionally efficient, secure and customisable. Your decision should be based upon your personal specifications and requirements. If you still aren’t sure, a member of our friendly team will be more than happy to offer you advice and guidance.

Quality composite doors Aylesbury

Double Glazing Direct are here to assist you in choosing the perfect entrance door for your home. Across Aylesbury, High Wycombe and beyond, we want to help your home achieve the highest level of efficiency and security all year round.

Visit our showroom in Aylesbury to get an up-close look at our range of composite doors from both Hallmark and Residor. Alternatively, you can give us a call on 01296 320252, or contact us online for a free quote, advice and guidance.

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