Beautifully Handcrafted & Expertly Installed

Secure Your Home In Style With An Expertly Handcrafted Composite Door From Sapphire Windows

Hand Crafted
Made to Measure
Expertly Installed
Why Choose A Sapphire Windows Composite Door?
Stunning Designs

Sapphire Windows GRP Composite Doors are aesthetically pleasing and are available in a huge range of colours and a variety of hardware and glazing options. 

The woodgrain finish on our GRP composite door is developed from oak tree wood grain, creating a beautifully authentic appearance and superior performance that is only available on our Distinction doors. 

Our stunning door designs would make a welcome addition to any home. 

Unparalleled Security

Our Distinction GRP (Glass-Reinforced Plastic) composite doors offer enhanced security thanks to their rigid polymer sub-frame, high density insulated core, and high impact resistant GRP skin.

As standard, our doors come fitted with a 4-hook composite door bolt which is tested to high security standards. These locks have four opposing hooks and a deadbolt throw for maximum security. Although highly secure, our locks ensure a smooth and robust operation of the doors.  

At Sapphire Windows, we do not compromise on our composite door’s security. By using the ULTION 3-star security rating & Sold Secure Diamond accredited cylinder, we have ultimate confidence in the security of our doors. Our ULTION cylinders come with a £1,000 burglary guarantee. 

Ultimate Energy Efficiency

When it comes to thermal efficiency, a Sapphire Windows composite door is the best choice you can make. It’s the most energy-efficient door on the market. 

Our composite doors exceed Approved Document L of building regulations, helping to keep your home insulated and your bills down. 

Our Distinction signature composite door (44.5mm) has been independently tested against a solid timber core composite door (48mm) and a timber paneled door (44mm). The results prove that our door is more than 19%+ more thermally efficient than both of the alternative doors.

Excellent Weatherproofing

With water-resistant polymer composite rails, our doors will keep the weather at bay and will stay looking greater for longer. 

Low Maintenance

Everything about our GRP composite door is designed to be easy to maintain – simply wipe clean with warm soapy water. 

Exceptional Durability

Sapphire Windows provide GRP Composite Doors with pedigree, offering strength, high impact resistance, and stability. Each door is backed with a 10-year guarantee and a FENSA Certificate!

Superb Sound Insulation

With a weighted noise reduction of 31 decibels, it means you can be sure your new door will keep outside noise to a minimum. 

Composite Door Styles, Colour & Glass Ranges

Our Composite doors are available in a huge range of styles & colours to suit your individual needs. Explore your options below. 

Composite Door Styles
Classic Collection
Cottage Collection
Contemporary Collection
Composite Door Glass Designs
Composite Door Colour Choices

These are some of our most popular colours but you are not limited to those. We can spray paint our doors to any colour available using the RAL colour matching system.

A full list of the RAL colours can be found on – all we require is the RAL number e.g. RAL 1015 Light Ivory.

Composite Door Fanlight Designs

If your door has a fanlight, then there are even more design choices to make. At Sapphire, we are able to offer a Bespoke design service for door fanlights. 

For many, opting for clear or obscure glass to match or complement the door design is the ideal choice.

For those looking to add more character and create a totally bespoke design for their doors, we are able to offer a Sandblast glass design with clear numbers or house names. Or Georgian bars for a more traditional design. 


Sandblast Glasss With Clear Numbers

Sandblast Glass With Clear House Name

Georgian Bars

Composite Door Side-screen Designs
If you have a wide opening for your door, then a composite door sidescreen may be the right option for you. Adding sidelights to your door gives a stylish extra dimension to truly make a statement. Not only do they look so impressive by extending the glazed area across the entrance to your home, sidelights also allow for more natural light to fill your internal living space.

Classical Door & Sidescreen

Esprit Door & Sidescreen

Esteem Door & Sidescreen

Composite Door Furniture Choices
Classic Range

Our Classic range of hardware offers a neat simple style to suit any type of home. 

Our Classic range of door furniture can be matched to our Classic range of window handles if you are looking to fully match all your windows and doors. 

Are you looking for a timeless style, clean lines and a huge range of finishes? Then look no further. Our Classic door handles, letterplates & urn knockers are available in the following finishes; 

Chrome, Gold, Bronze, Graphite, Satin, Antique Black, Silver, Black, White & Anthracite Grey

Architectural Range

A sleek contemporary hardware range. Ideal for adding atmospheric style and standing out from the crowd.

Bold styling is what you get with the Architectural range.

A sleek contemporary hardware range. Ideal for adding atmospheric style and standing out from the crowd.

Our Architectural range of door furniture can be matched to our Architectural range of window handles if you are looking to fully match all your windows and doors. 

Our Architectural door handles, letterplates & knockers are available in the following finishes;

Chrome, Gold, Bronze, Graphite, Satin, Antique Black, Silver, Black, White & Anthracite Grey 

Heritage Range

Bring a sophisticated and classy look to any period home. Ideal for traditional properties and quaint cottages.

Are you looking for door furniture that has period charm but with modern durability, then the Heritage range could be for you?

Our Heritage range of door furniture can be matched to our Heritage range of window handles if you are looking to fully match all your windows and doors. 

Our Heritage door handles, letterplates & bull ring knockers are available in the following finishes; 


For the ultimate in contemporary styling, choose the new luxurious Hardex Rose finish for your window and door furniture.
Bespoke Door Knockers

Please see our bespoke door knocker range below. We have a range of designs available in Solid Brass, Chrome, Nickel & Cast Iron.

There is a door knocker design to suit every style of house.

All are available as an optional upgrade for our composite doors. 

The Ultion Lock

The Ultion lock has an incredible suite of security features that work to secure your home against major attacks on your door. It is the flagship lock available on the market. 

With Ultion, not only do you get unparalleled security and protection for your home, but you’re also covered by our £1000 Security Guarantee in the event anyone breaks into your property.

*£1,000 Security Guarantee *

You can upgrade your door to an Ultion Smart door lock. 

We are delighted to offer you the next generation of smart locks for your home. A smart and secure lock with key operation and a £1000 security guarantee.

  • Control from your phone
  • Auto-lock and unlock
  • Works with: Bluetooth, Apple Home Kit, Zigbee, and Z-Wave
  • Use your key
  • Fully customisable from your free app
  • Allow guest key entry for free. 

To find out more regarding our Smart lock, click here.