Isleworth · Greater London
Composite Doors in Isleworth
Looking for a composite door in Isleworth? We can quote for front and back doors in a wide range of styles, colours, glass designs and hardware finishes.
- TW7
- TW3
- TW5
- Guide from £1,295
Isleworth: composite front doors
For easily accessible doors in new homes in England, Approved Document Q expects doorsets that resist forced entry, commonly shown by testing to PAS 24. Asking for a PAS 24 tested composite door is a practical benchmark when replacing a front or back door, even though the rule targets new dwellings.
In England, replacing a glazed external door is notifiable building work, and whether a mostly solid door counts depends on how much of it is glazed, so the installer confirms what applies. Where notification is needed, an installer registered with a competent person scheme can self-certify the work; otherwise building control approves it.
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.
A composite door slab usually combines a glass-reinforced plastic (GRP) outer skin, moulded with a woodgrain texture, over an insulated core. Some cores are high-density foam, others solid timber. Timber-cored slabs tend to feel heavier and more solid when closed, while foam cores are lighter and insulate well.
What you get
- Made-to-measure composite doorset in your chosen colour
- Written guarantee terms and advice on building regulations sign-off
- Survey, measuring and threshold check
- Multi-point lock with anti-snap cylinder
Working in Isleworth
- Postcodes covered
- TW7, TW3, TW5 and the surrounding area, including Hounslow, Heston and Richmond
- Coast
- Isleworth is well inland, around 49 km from the nearest coast, so salt exposure is not usually a factor.
- Daylight and sun
- In Isleworth the midwinter sun reaches about 15° above the horizon at noon, with roughly 7.6 hours of daylight, rising to about 62° and 16.4 hours in midsummer. Dark-coloured doors in direct sun get much hotter than pale ones, so follow the manufacturer's guidance on colour for south and west-facing entrances. Glazed panels and side lights bring daylight into dark hallways, especially on north-facing elevations.
- Access and setting
- Rural doors often face open fields, driving rain and sometimes mud and animals, so robust weather seals and threshold drainage matter. Older cottages may have low or irregular openings, so doors are measured carefully and frames sized to suit.
- Rules in England
- 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.
Guide prices in Isleworth
| 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 |
Get a guide price for your size
In England, replacing a whole window, roof window or glazed external door is building work. It has to be notified to building control, either by an installer registered with a competent person scheme such as FENSA or Certass, or through a building notice to the council. Replacing only the glass in an existing frame is a repair and is not notifiable.
What you can choose
Colours and dual colour
Woodgrain-textured skins in many colours, often with a different colour inside so the door suits both the street and the hallway.
Hardware finishes
Handles, knockers, letterplates and numerals in chrome, satin, gold, black or graphite, chosen to match the door style.
Side panels and toplights
Glazed or solid panels beside or above the door to bring light into the hallway and fill wider openings.
Composite Doors in Isleworth: questions
What guarantee comes with a composite door?
Manufacturer guarantees apply to the door slab, frame, glass and locking hardware, and the terms are confirmed in writing. Guarantee terms for the installation are set out in writing with your quote, so you know what is covered before you go ahead. Keep the paperwork with your building regulations certificate for when you sell the property.
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.
Can I change a flat's front door to a composite door?
It depends where the door is. A flat entrance door that opens onto a shared stairwell or corridor is normally a fire door, so only a certified fire-rated doorset is suitable. Leaseholders usually need the freeholder's or managing agent's agreement too. A flat door opening directly outside may be treated like a house door, so check first.
Can a composite door be fitted with a level threshold?
Yes, composite doors can be supplied with a low aluminium threshold for step-free or near step-free access. In England, where a house built in 1999 or later has a level threshold at the main entrance, the replacement should keep it. Low thresholds need good drainage and some shelter from driving rain, which the glazier checks at survey.
Do you cover Isleworth for composite doors?
Yes. We can quote for composite doors across Isleworth and the surrounding Greater London area, including postcode districts TW7, TW3 and TW5, and nearby Hounslow, Heston and Richmond. Start with your postcode on the quote form and a glazier will arrange a free survey before giving you a written quote.
Get a written quote in Isleworth
Free survey for new glazing, clear guide prices and one point of contact for every glazing job.