Dorset · England
Composite Doors in Dorset
If your back door in Dorset is draughty, hard to lock or letting water in, we can survey it and quote for a made-to-measure composite replacement.
- Guide from £1,295
- 7 towns covered
- Postcode areas BH, DT, SP
Composite front doors in Dorset: what to know
Composite door prices depend on the door style, core type, colour, glass design, side panels or toplights, hardware finish and lock specification. Removing an old frame from a deep or uneven opening, or fitting a new threshold, adds labour. See the guide prices for typical ranges; the written quote fixes the figure.
Letterplates can be a security weak spot, because tools can be fed through to reach the inside handle or keys. A letterplate with an internal cowl or restrictor, or a door with no letterplate and a wall-mounted post box, reduces that risk. Keys should be kept away from the door.
A flat's entrance door that opens onto a shared stairwell or corridor is normally a fire door, so it should not be swapped for a standard composite door. Certified fire-rated composite doorsets are made for this purpose, and the freeholder or managing agent will usually need to agree the replacement.
In England, Approved Document L sets the limiting standard for a new door in an existing home at a U-value of 1.4 W/m²K, or a Doorset Energy Rating of band B for a mostly solid door. Doors with more than 60% of the face glazed may instead meet band C.

Towns we cover for composite doors in Dorset
Choose your town for local details, nearby areas and the postcode districts we cover.
What applies in Dorset
Approved Document K requires safety glass in critical locations in England: glazing in doors and in side panels within 300 mm of a door, up to 1500 mm above floor level, and any glazing in walls or partitions up to 800 mm above floor level.
Approved Document L sets the minimum energy performance for replacement windows and doors in existing homes in England: a U-value of 1.4 W/m²K, or Window Energy Rating band B for windows; doors can instead meet a Door Set Energy Rating (band B, or band C for doors more than 60% glazed); rooflights need 2.2 W/m²K.
Dorset has its own coastline, so for homes and businesses near the sea, salt air and wind-driven rain are part of the brief. Near the sea, salt air corrodes plated door furniture and lock parts more quickly, so marine-grade or stainless hardware is worth considering. Exposed doors also face wind-driven rain, so a well-sealed frame, weatherbar and threshold drainage matter more than usual.
Street-facing front doors in towns and cities face more passers-by, so anti-snap cylinders, laminated glass and letterplate guards are worth specifying. Conservation areas may control front door styles and colours, and flat entrance doors onto shared corridors normally need fire-rated doorsets.
Guide prices
| Typical job | Guide price inc VAT |
|---|---|
| Composite front door, supplied and fitted | £1,295 – £1,795 |
| Door with one side panel | £1,695 – £2,295 |
| Door, side panel and top light | £1,895 – £2,595 |
Choosing your composite doors
Insulated foam core
A lighter slab with a high-density foam core, offering good thermal performance and a wide range of styles.
Solid timber core
A heavier slab with a timber core under the composite skin, giving a solid feel and sound when the door closes.
Side panels and toplights
Glazed or solid panels beside or above the door to bring light into the hallway and fill wider openings.
Glass designs
Clear, obscure, bevelled or decorative glass in sealed cassettes, with toughened or laminated panes for safety and security.
Composite Doors in Dorset: questions
Are composite doors more secure than uPVC doors?
A well-specified composite door is usually stiffer and harder to force than an older uPVC panel door, but security depends mostly on the lock, cylinder, hinges and glass. Look for a multi-point lock, an anti-snap cylinder such as TS 007 3-star or SS312 Diamond, laminated glass and a door tested to PAS 24.
Do I need building regulations approval for a new front door?
It depends on the door and where you live. In England, replacing a glazed external door is notifiable building work and must meet the energy standard, while the position for a mostly solid door depends on how much of it is glazed. A competent person scheme installer can self-certify notifiable work; otherwise building control approves it. Wales, Scotland and Northern Ireland have their own systems, and we explain which applies before fitting.
Will a composite door fade or need painting?
Composite doors do not need painting, and the coloured skins are designed to resist fading, although any surface colour can change slightly over many years in strong sun. Clean the door with warm soapy water and a soft cloth, and avoid solvents or abrasive pads. Manufacturer guarantees apply to the finish, and the terms are confirmed in writing.
Do I need planning permission to replace my front door?
In England, replacing a house's front door with one of similar appearance usually does not need planning permission. Listed buildings need listed building consent for significant works, and conservation areas or Article 4 directions can restrict changes to front doors, colours and materials. Flats may need permission, so check with your council if your home falls into any of these.
Which parts of Dorset do you cover for composite doors?
We cover the whole of Dorset, including Bournemouth, Poole, Weymouth, Christchurch and Dorchester, and postcode areas BH, DT, SP. Building rules for composite doors here follow the regulations for England. Enter your postcode on the quote form and we will confirm cover; then a glazier will arrange a free survey before giving you a written quote.
Other glazing services in Dorset
- Replacement Glass in Dorset
- Misted Glass Repair in Dorset
- Emergency Glazing in Dorset
- Safety Glass in Dorset
- Window Repairs in Dorset
- Window Film in Dorset
- uPVC Windows in Dorset
- Aluminium Windows in Dorset
- Sash Windows in Dorset
- Bifold Doors in Dorset
- Sliding Doors in Dorset
- Secondary Glazing in Dorset
- Roof Lanterns in Dorset
- Glass Balustrades in Dorset
- Frameless Glass in Dorset
- Shower Screens in Dorset
- Glass Splashbacks in Dorset
- Bespoke Mirrors in Dorset
- Glass Roofs in Dorset
- Shopfront Glazing in Dorset
- Curtain Walling in Dorset
- Glass Partitions in Dorset
- Property Glazing in Dorset
Get a written quote in Dorset
Free survey for new glazing, clear guide prices and one point of contact for every glazing job.