Trade composite doors
Composite doors with a glass-reinforced plastic (GRP) skin over a solid insulating core, supplied as a complete doorset in a frame with hardware. A popular upgrade on front doors for its timber-like look and solid feel.
- Product code
- TG-D01
- Guide trade price
- £560 to £1,150 per door, ex VAT, supply only
- Lead time
- We confirm the production and delivery date for composite doors when your order is acknowledged.
- Delivery
- UK-wide to site, yard or unit, priced on your quote
- Category
- Doors
Typical layout. W and H are the frame or glass sizes you give us.
What is in the specification?
- GRP skin over a solid insulating core
- Supplied as a doorset with outer frame and threshold
- Multi-point locking with anti-snap cylinder option
- Range of door styles with or without glass
- Woodgrain-textured colours, with white inside as an option
- Matching side panels and toplights
- Letterplate, knocker, handles and spyhole as specified
- Low or level threshold options
Options you can add
- Side panels
- Toplights
- Colour one side or both
- Anti-snap cylinders
- Low threshold
- Door chains and spyholes
- PAS 24 specification
Who orders trade composite doors?
Mostly window and door installers, landlords and property managers, housing associations and their contractors, builders and main contractors and housing developers. Typical uses include front and back doors on houses; flats with private entrances; landlord and social housing door replacement.
Composite doors are ordered by style, colour, handing and frame size. Your quote lists each of those so the door that arrives is the one you specified.
Handing is the most common mistake on door orders. State the hinge side as seen from outside and whether the door opens in or out, and we repeat it back on the quote.
Side panels and toplights are made to match the door, so order them together. Separate orders can come from different batches and the colour can vary slightly.
For flats where the front door opens onto a common stair, the door may need to be fire-rated. Fire doors are a separate product and are not supplied as standard composite doors.
How should you measure?
Measure the structural opening width at the top, middle and bottom and the height on both sides; note which way the door opens and which side the hinges go.
Which building regulations apply?
Replacement external doors in England should meet a U-value of 1.4 W/m²K under Approved Document L. Glass in doors and side panels below 1500mm is a critical location under Approved Document K, so it must break safely (toughened or laminated to BS EN 12600), be robust or in small panes, or be permanently protected. Doors into new homes also need to meet Approved Document Q for security, which is usually shown with PAS 24. Replacing a door that is more than half glazed is notifiable building work, self-certified through a competent person scheme or approved by building control.
Wales
In Wales, replacement external doors must meet Approved Document L (Wales), and glass in doors and side panels in critical locations must meet the safety glazing guidance in Approved Document N, usually with toughened or laminated safety glass. Replacing a door that is more than half glazed is notifiable building work, self-certified through a competent person scheme or approved by building control.
Scotland
In Scotland, replacement doors in a house do not normally need a building warrant, but they must still meet the building standards in the Technical Handbooks, including energy and safety glazing. Check with the local authority for flats, listed buildings and conservation areas.
Northern Ireland
In Northern Ireland, replacement doors should meet the energy guidance in Technical Booklet F1, and glass in doors and side panels the glazing safety guidance in Booklet V. Check with your council's building control service before work starts.
More detail: Approved Document L guide safety glazing guide. Your installer or designer remains responsible for compliance and any notification.
How ordering works
Measure and schedule
Measure each opening and list the sizes in millimetres.
Request trade prices
Email the schedule or send a photo on WhatsApp for an itemised quote.
Sign off the details
We send an acknowledgement; you check and approve it.
Plan the fit
We confirm the delivery date so you can book your fitters.
Questions trade customers ask
What is a composite door made of?
A GRP (glass-reinforced plastic) skin bonded over a solid insulating core, set in a frame with a threshold and hardware.
Are your composite doors fire doors?
No. Standard composite doors are not fire-rated. If the door is a fire door, for example onto a common stair in a block of flats, it needs a certified fire doorset, which is a different product.
Can I have a different colour inside?
Yes, many styles can be white inside and coloured outside, or the same colour both sides.
Do you supply side panels and toplights?
Yes, made to match the door and listed on the same quote.
Trade composite doors by area
Area pages cover delivery and the regulations that apply where the job is.