GRP Composite Doors

With some of the UKs most competitive prices, External Doors Online are proud to present our GRP Composite Door range, starting from £380 inc VAT and free delivery. Our entry range of composite doors offer a wide choice of designs, colours and options at affordable prices, without compromising on quality. With standard lead times of 7-10 working days our GRP Composite Doors are the perfect choice for any project. Use our door designer to create your own unique design, obtain an instant live price and order online in seconds.

Design & Order Online

Why choose a GRP Composite Door?

Door Styles ▷ 36 Designs

Door Colours ▷ 13

U Values ▷ As Low as 1.0

High Security ▷ Multi-Point Mechanism

Warranty ▷ 10 Years

Lead Time ▷ 7-10 Working Days

From ▷ £380 inc VAT & free delivery

Design & Order Online

GRP Composite Door FAQs

The door slabs are 44mm thick. They consist of 2.0mm GRP outer skins with a thermally efficient condensed foam core.
Yes, all doors are supplied pre-hung in the frame ready to install.
With the split spindle handle system when your door is closed the centre latch will not be released by moving the outside handle. A key is always required to open the door from the outside.
The door threshold is the bottom part of the door frame that you step over to enter the property. The different thresholds finish at different heights. Please see our cills an thresholds page for more information.
The cill runs underneath the threshold and protrudes outwards, it is used to deflect the rain water away from the brickwork underneath, preventing damp. The cills come in a 85mm (stub), 150mm and 180mm depth. This is measured from the back of the frame. More details can be found on our cills and thresholds page.
All of our doors are made to measure due to all openings being different. Customers can order the size bespoke to their requirement.
Our standard lead time is 7-10 working days although this can be subject to change depending on current stock levels.
Yes, the sizes you enter are the overall sizes for your doorset. This includes the frame and cill (if chosen). E.g. A 900w x 2100h doorset is the overall size including the frame. This means that the door slab itself is smaller then 900w x 2100h due to the frame being incorporated into these sizes. This is also the same for side panels which are also surrounded by frame.
Add On’s are available in 15mm, 25mm or 50mm sections and are used if the brickwork opening is larger than the maximum frame size we are able to manufacture.
E.g. If you have an opening height of 2170mm and the maximum height we can manufacture a doorset with a cill and pvc threshold is 2159mm, a 15mm add on will be needed. We would reduce the frame height to 2155mm and fit the 15mm add on, this achieves the overall height of 2170mm.
For more information please see our add ons page.

GRP Composite Doors Explained

From parts, options and components, to measuring and installation guides, click through the tabs below to learn everything you need to know about GRP Composite Doors before placing your order.

External Doors online - GRP Composite Door Duck Egg Blue

Why a GRP Composite Door.

We don't believe in compromising on quality. We've brought together GRP Composite Door materials to give you the very best in strength, easy maintenance, security, and weather resistance. Thirteen stunning door colours, conventional and modern door furniture, bespoke Energy Rated Doors, Hurricane tested, Authentic timber grain.

External Doors Online - GRP Composite Door Darkwood Gold Hardware

The Composite Door edges.

The hinge edge of your composite door has a PVC edging. Then we cut through the edging so that whichever hinge you selected sits neatly inside the edge of your door. To make the door super strong, the lock edge has been fitted with a full length of 4mm thick, powder coated aluminium lock strip. Then your preferred lock sits flush inside your door.

External Doors Online - Composite Doors Reglazable

Reglazable Composite Door glass.

Making a composite door to just hold the glass is easy. But have you ever thought about what happens if the glass unit breaks down in the composite door you fitted? You will want that door to have been an External Doors Online GRP Composite door. Our unique and patented glazing cassette can be removed from the inside to let you simply change the glass and reuse the cassette. You won’t need a new door because it has been damaged whilst trying to follow impossible deglazing knacks and techniques!

Colour all round.

At External Doors Online we offer the first GRP composite door to give the complete package–all-round colour. The uniquely coordinated details threshold, frame, door drip and edges combine together to make a truly striking appearance. You can choose from the oak or dark wood options in a large range of available door styles. This is the next step for composite doors.

Internal colour choice.

Providing the GRP composite door market with even more choice, we are pleased to announce the expansion of our product offering with a new option that allows customers to specify a colour on both sides of their chosen front door.

With the same stunning range of 13 colours to choose from, the new option allows customers to mix and match shades to suit the inside and outside of their home. One colour can be selected for the external side of the door and a completely different colour for the interior, allowing the door to truly reflect the homeowner’s personality and complement both the building’s character and internal design.

External Doors Online - Composite Doors Ironmongery

Choice of ironmongery.

If you’re looking to make a statement, our Contemporary Suite includes a vast selection of modern accessories such as long and short bow handles that are guaranteed to make your composite door stand out from the crowd.

Make your door a timeless classic by choose from our Standard Hardware Suite. Although it’s in the name, there’s nothing standard about this stunning range.

Design & Order Online

How to Measure

Width

The width should be measured brick to brick at three points - top, middle and bottom of the opening. The smallest of these measurements is taken as the width. Always deduct 10mm from the final width.

Height

The height should be measured brick to brick at three points - left, middle and right of the opening. The smallest of these measurements is taken as the height. Always deduct 10mm from the final height.

Please remember:

Measure in at least three different places and deduct 10mm from both the final height and width measurements - we do not make any fitting allowances on the sizes provided.
Measurements will need to include the frame, cill and any frame extensions required.
All dimensions to be supplied in Metric (mm) and all designs are to be viewed from the outside.
Always check your measurements at least twice to ensure you have the correct size.
Ensure the frame size is smaller than the brickwork opening.
Do not measure your existing door or frame, but measure the brick opening.

SINGLE COMPOSITE DOOR & FRAME

Height

COMPOSITE DOOR & SIDE PANEL FRAME

Side Panels

Please measure as above but also... the side panel width should be measured from the centre point of the frame between the door and the side panel to the outer edge of the side panel frame.

COMPOSITE DOOR & TOP LIGHT FRAME

Top Light

Please measure as above, but also... the top light depth should be measured from the centre point of the frame between the door and the top light to the top of the door frame. This will give you the transom drop for the top light.