Your front door does more than just open and close — it’s the first thing anyone sees, the main line of defence against intruders, and a significant factor in how well your home holds heat. If yours is draughty, outdated, or just plain tired-looking, a front door replacement could be one of the best home improvements you make in 2026. At Glitz Windows & Doors, we’ve been helping homeowners across Coulsdon, Croydon, Sutton, and Surrey make that change for over 25 years  and in this guide, we’ll walk you through everything you need to know before booking an installer.

Signs It’s Time to Replace Your Front Door

Not sure whether repair or full replacement makes more sense? Here are the tell-tale signs that a new door is the smarter call:

• Draughts around the frame even when the door is fully closed
• Warping, rot, or swelling that makes it hard to open or shut
• A single-point lock instead of a modern multipoint locking system
• Faded, peeling, or cracked paintwork that no longer looks presentable
• High energy bills linked to poor insulation at the doorway

Any one of these alone might be patchable. But if you’re ticking two or more boxes, replacement almost always works out cheaper in the long run than repeated repairs.

Which Type of Front Door Should You Choose?

The UK market has three main materials, each with distinct strengths:

Composite Doors

The most popular choice for UK homeowners in 2026. Composite front doors are built around a solid timber core wrapped in GRP (glass-reinforced plastic), giving you the warmth and look of wood without the maintenance headaches. They resist warping hold colour beautifully, and typically achieve a U-value of around 1.8 W/m²K or lower. They also come with multipoint locking as standard making them one of the most secure options on the market. If kerb appeal and security are both priorities, this is usually the one we recommend.

uPVC Doors

A solid, budget-friendly option with excellent energy efficiency and very low upkeep. Modern uPVC doors are a long way from the boxy styles of the 1990s — they’re available in a wide range of colours and woodgrain finishes. They won’t suit every period property aesthetically, but for most modern and post-war homes they’re a practical, long-lasting choice.

Aluminium Doors

Slim sightlines, a contemporary finish, and exceptional durability. Thermally broken aluminium doors perform well on energy efficiency and look particularly good on modern or architect-designed homes. They tend to sit at the higher end of the price range but they’re built to last decades.

Front Door Replacement Cost in the UK (2026)

Cost is usually the first question, and it’s a fair one. Here’s a realistic overview of what you can expect to pay across the UK in 2026, including supply and professional installation:

uPVC front door replacement: £600 – £1,200

Composite front door installed: £900 – £2,500

Aluminium door installed: £1,400 – £3,500+

Door frame replacement (if needed): Add £150 – £400

These figures vary depending on door size, glazing, hardware, and whether the existing frame is being retained or replaced. A like-for-like uPVC swap in a standard single-door opening will naturally cost less than a wide composite door with decorative glass panels and upgraded ironmongery.

The best way to get an accurate number for your property is to request a free no-obligation quote , we’ll measure up and give you a written breakdown with no surprises.

The Front Door Installation Process: What to Expect

A standard front door replacement typically takes four to six hours for an experienced fitter. Here’s how the process usually unfolds:

Survey & measure: We visit, measure the opening precisely, and discuss your style and colour preferences. Nothing is ordered until the measurements are confirmed.

Manufacturing: Your door is made to measure — most composite and uPVC doors are produced within two to four weeks.

Old door removal: The existing door and, where necessary, the frame are carefully removed and taken away.

Frame fitting: If a new frame is required, it’s fitted and levelled precisely in the opening.

Door hanging & hardware: The door is hung, hinges adjusted, and the locking system fitted and tested.

Sealing & finishing: The perimeter is sealed for weatherproofing and the installation is cleaned up.

FENSA certificate: All our door installations are carried out by FENSA-registered fitters — you’ll receive your certificate on completion.

Why Composite Doors Are the UK’s Top Choice Right Now

If you’re still weighing up options it’s worth noting that composite doors have dominated the UK replacement market for several years running. The combination of thermal performance, security ratings (many carry Secured by Design accreditation) and the sheer range of styles available — from traditional cottage-style to sleek contemporary finishes — means they suit most homes. You can explore our composite front door range to get an idea of the styles and finishes we carry. If you’re in the Coulsdon area, take a look at our composite doors in Coulsdon page as well.

Building Regulations & Compliance: What UK Homeowners Need to Know

In England and Wales, replacing an external door is covered by Part L (energy efficiency) and Part Q (security) of the Building Regulations. This means your new door must meet minimum thermal performance requirements (typically a U-value of 1.8 W/m²K or better) and pass security standards. When you use a FENSA-registered installer, compliance is taken care of automatically and you receive a completion certificate iimportant evidence if you ever sell your home.

We also install a full range of doors across Croydon and South London, all compliant, all backed by our 10-year guarantee.

Ready to Replace Your Front Door? Get a Free Quote Today

If you’re based in Coulsdon, Croydon, Sutton, or anywhere across Surrey and South London, our team is ready to help. We offer a free, no-obligation survey and written quote — no call centres, just direct contact with experienced installers who know the local area.

Call, or fill in our quick online form to get started. We also supply and fit bifold doors, patio doors, and French doors if you’re considering other options around the property.