Composite front doors · Wales
Triple glazed composite front doors in Gwynedd
We survey and fit triple glazed composite front doors across Gwynedd, from Bangor and Holyhead to smaller towns such as Porthmadog.

Insulated composite doors with triple glazed panels and PAS 24 locks. 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.
Guide prices across Gwynedd
Single composite door
standard size, glazed panel
£1,395 – £1,695inc VAT · £1,160 – £1,410 ex VAT
- Triple glazed panels
- Removal of the old door or window
- Fitted, sealed and finished
Door with one side panel
up to about 1.4 m wide
£1,995 – £2,495inc VAT · £1,660 – £2,080 ex VAT
- Triple glazed panels
- Removal of the old door or window
- Fitted, sealed and finished
Door with two side panels
up to about 2 m wide
£2,795 – £3,495inc VAT · £2,330 – £2,910 ex VAT
- Triple glazed panels
- Removal of the old door or window
- Fitted, sealed and finished
Guide prices, supply and fit. The written quote after your survey fixes the price for the specification shown; anything extra is agreed with you first.
Towns in Gwynedd
Rules in Wales
In Wales, 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 as windows: a competent person scheme installer self-certifies the work, or building control approves it.
Before ordering: Householder permitted development rules do not cover flats, and councils can remove rights with Article 4 directions. Listed buildings need listed building consent. Check with your council before changing the style or material of a front door.
How it works
After the free survey you get a written quote naming the frame system, the glass build-up and the whole-window U-value for every item. Windows are made to order, then fitted, sealed and made good, one opening at a time.
- Free survey and a written quote fixed for the specification
- Glass build-up and door U-value on every quote
- Written handover pack at the end of the job
- Guarantees on frames, units and fitting in writing
Questions
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.
How much does a triple glazed composite door cost?
Our guide starts at £1,395 fitted for a single door and £1,995 with one side panel, inc VAT. UK quotes range from about £800 for a basic door to £3,000 with side panels.
Do you cover all of Gwynedd?
We arrange surveys and fitting across Gwynedd.
Do I need permission for triple glazed composite front doors in Wales?
In Wales, householder rules do not cover flats, councils can use Article 4 directions, and listed buildings need consent.
Composite front doors in nearby areas of Wales
Other products in Gwynedd
- 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 across Gwynedd
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 Wales.
