Composite front doors · Greater London
Triple glazed composite front doors in Harrow
Looking at triple glazed composite front doors for a home in Harrow? We survey, quote and fit across Greater London, and the HA2 postcode district is part of that.

Solid-core doors, side panels and fanlights, fitted in a day. A composite front door has a solid insulated core, usually timber or foam, under a tough glass-reinforced plastic (GRP) skin, with a multi-point lock.
Winter light and glass choice in Harrow
Winter days in Harrow are short: about 7 h 49 min of daylight on 21 December, with the sun peaking near 15°. That low angle reaches deep into south-facing rooms, so we match the glass to each elevation rather than using one spec for the whole house.
Guide prices in Harrow
| Guide | Supply and fit, inc VAT |
|---|---|
| Single composite door standard size, glazed panel | £1,395 – £1,695 |
| Door with one side panel up to about 1.4 m wide | £1,995 – £2,495 |
| Door with two side panels up to about 2 m wide | £2,795 – £3,495 |
Guide prices. Your written quote after the free survey fixes the price for the specification shown.
Rules for composite front doors in England
In England, replacement external doors must meet 1.4 W/m²K, or a door set energy rating of band C (more than 60% glazed) or band B (other doors). Replacement external doors fall under the same energy rules: a competent person scheme installer (such as FENSA or Certass) self-certifies the work and notifies the council, or a building control body approves it.
Before ordering: Replacing doors on a house is normally permitted development if the new ones look similar. Flats need planning permission for a change that alters their appearance, an Article 4 direction may mean permission is needed, and listed buildings need listed building consent.
How it works
We start with a survey, not a sales pitch: measurements, the structure above any bays, trickle-vent needs and escape windows. The quote that follows fixes the price, and anything unexpected on the day is agreed with you first.
- Guide prices published, not hidden
- No pressure: the quote is yours to keep
- Frames, glass and fitting in one contract
- Advice on planning and consents before you order
Questions from Harrow
Is triple glazing worth it in a front door?
The glass is the weakest part of a composite door for heat loss, so triple glazing the panels helps most when the door has large glazed areas or side panels.
Are composite doors secure?
Good ones are tested to PAS 24 and fitted with anti-snap cylinders. We specify both.
Do I need permission for triple glazed composite front doors in Harrow?
In England, a replacement door on a house that looks similar is normally permitted development; flats need permission if the change alters their appearance, Article 4 areas may need permission, and listed buildings need listed building consent. Check whether your street is in a conservation area or covered by an Article 4 direction before changing the style.
Do you fit triple glazed composite front doors in Harrow?
Yes. We arrange surveys and fitting in Harrow and across Greater London. Send your postcode and the windows or doors you want replaced, and we will book a free survey.
Nearby
Also near Harrow: Wembley (4 km), Northolt (4 km), Greenford (6 km) and Ruislip (6 km).
Other products in Harrow
- uPVC windows
- Aluminium windows
- Timber windows
- Alu-clad timber windows
- Casement windows
- Flush casement windows
- Tilt and turn windows
- Sash windows
- Bay and bow windows
- Fixed and picture windows
- French doors
- Sliding patio doors
- Bifold doors
- Glass-only replacement
- Acoustic triple glazing
- Security glazing
- Whole-house replacement
- New builds and self-builds
- Period homes and conservation areas
- Flats and apartments
- Passivhaus and EnerPHit
Composite front doors in Harrow: book your free survey
Written quote fixed for the specification, after a free survey. Building Regulations sign-off by a competent person scheme installer or building control, as the law requires in England.
