Best Entrance Door Brands in the UK: 2026 Comparison Guide

Choosing the right entrance door brand is one of the most consequential specification decisions on a UK home renovation. The brand determines security tier, thermal performance, longevity, kerb appeal and warranty. Unlike windows where a single brand can cover the whole house, entrance doors split into materially different categories — composite, steel security, aluminium — each with a different ranking of brands.

This guide compares the four premium entrance door brands we install in 2026: Palladio (composite), Gerda and SteelR (steel security), and the Cortizo Millennium Plus 70 / 80 Door (aluminium). It explains the practical trade-offs and helps you decide which brand fits your property type, security priority and budget.

We install all four across Buckinghamshire, Berkshire, Oxfordshire, Surrey, Hampshire, Hertfordshire and West London. For the full entrance door category page see our Entrance Doors hub.

Quick Summary

| Brand | Category | Best For | |---|---|---| | Palladio | Composite (GRP fibreglass monocoque) | Most UK premium homes — strong all-rounder, 65mm GRP fibreglass slab, 12-year warranty | | Gerda | Steel security | High-net-worth properties, insurance-driven specs, RC2/RC3 BS EN 1627:2011 | | SteelR | Steel security (RC4) | Ultra-premium properties where insurance, occupancy or risk profile demands beyond residential RC3 | | Cortizo Millennium Plus 70 / 80 | Aluminium | Architect-led contemporary new builds where the entrance door matches aluminium glazing schedule |

Palladio — The Composite Default

Palladio is the Irish-manufactured composite entrance door brand we install exclusively across the composite category. The system is built around a 65mm GRP fibreglass monocoque slab: a one-piece fibreglass shell with no seams, no bonded skins and no weak points where moisture can ingress.

Key specifications:

• 65mm GRP fibreglass-reinforced monocoque slab (PUREX0 high-density core; Palladio patent 1766176)
• Whole-door U-values: 0.85 W/m²K (solid) / 0.98 W/m²K (glazed)
• PAS 24-compliant multi-point locking as standard (10-point Mantis 3 upgrade available)
• 12-year manufacturer warranty on the door slab (per Palladio UK dealer terms)
• Secured by Design configurations available
• Triple-glazed glass units standard
• Contemporary and traditional design tiers

Where it fits:

• Most UK premium homes — residential properties where the security and thermal spec is excellent without needing the steel-tier security upgrade
• Heritage and conservation-area properties where the traditional panel design is wanted (Palladio's traditional design tier)
• Contemporary new builds where the contemporary design tier matches the architectural language

For full Palladio coverage see our Palladio brand hub, Palladio Doors Review and Palladio vs Solidor Composite Doors.

Vitrum Solutions installs Palladio EXCLUSIVELY across the composite door category. We do not supply or install Solidor, Endurance, Rockdoor, Dynamic or other composite brands. References to other composite brands on this site are comparison context only.

Gerda — The Steel Security Standard

Gerda is the Polish-manufactured steel security door brand. Each door tests to BS EN 1627:2011 RC2 as standard with RC3 upgrade available on the Optima and Thermo Premium ranges. Gerda fills the gap between Palladio composite (PAS 24 baseline) and SteelR (RC4 ultra-premium).

Key specifications:

• BS EN 1627:2011 RC2 standard with RC3 upgrade on Optima and Thermo Premium
• Whole-door U-values: 0.74-0.81 W/m²K (ALTUS), 0.79-0.9 W/m²K (THERMO PRIME), tighter than premium composite whole-door U-values which typically run 0.85-0.98 W/m²K
• Up to 12-point multi-point locking
• 1.2-2.0mm galvanised steel panels with multi-layer thermal-acoustic core
• 200+ RAL colours plus wood-effect transfers
• 32-35 dB Rw acoustic performance (versus 25-28 dB on a standard composite)

Where it fits:

• High-net-worth properties where the insurance underwriter requires or discounts for BS EN 1627 certification (Hiscox, Chubb, AIG Private Client and others)
• Properties storing valuable contents (art, jewellery, collections)
• Rural or isolated properties where neighbour-led intervention is unlikely
• Properties near busy roads or rail corridors where the acoustic performance matters

For full Gerda coverage see our Gerda brand hub, Gerda Steel Doors Review and Gerda RC2 vs RC3 Steel Doors.

SteelR — The RC4 Ultra-Premium Tier

SteelR is the bespoke UK steel entrance door brand we install at the upper end of the steel security category. SteelR tests to BS EN 1627:2011 RC4 in the single-leaf unglazed configuration, a step above the residential RC2/RC3 specs typical of mainstream steel security doors.

Key specifications:

• BS EN 1627:2011 RC4 in single-leaf unglazed configuration
• ISO 9001 certified manufacturing
• PAS 24:2022 and Secured by Design accredited as standard
• FIAM678 three-directional lock (EN 12209 Class 7) with ISEO R6 PLUS cylinder
• 200+ RAL colour finishes including wood-effect transfers
• Tiered manufacturer warranty: 3 years lock, 5 years decorative finish, 10 years door construction

Where RC4 actually matters in practice:

RC4 is tested against heavy-duty hand tools and battery-operated power tools (drills, jigsaws, oscillating saws, larger crowbars), the next attack tier above RC3's hand-tool-only test set. PAS 24:2022 testing covers the casement and lock against simple hand tools to a defined attack tier; BS EN 1627 RC4 covers the door system against the next attack tier above RC3, including battery power tools. Most opportunistic burglary is abandoned within 5 minutes; RC4 closes the door on sustained motivated attack.

Where it fits:

• Ultra-premium properties with insurance, occupancy or risk profile demanding meaningful security beyond residential RC2/RC3
• Properties where the underwriter has specified RC4 minimum on the front entrance
• Rural properties where sustained-attack resistance is the brief

For full SteelR coverage see the SteelR brand hub and Aluminium vs Steel Front Doors.

Cortizo Millennium Plus 70 / 80 — The Aluminium Entrance Door

Cortizo's Millennium Plus is the aluminium entrance door system that appears most often on architect-led contemporary new builds where the entrance door is part of an aluminium-led glazing schedule. The 70 / 80 designation refers to the frame depth (70mm or 80mm). The thicker the frame, the better the thermal performance.

Key specifications:

• 70mm or 80mm thermally broken aluminium frame
• PAS 24:2022 certified opening profiles
• Multi-point locking with 3-star anti-snap cylinder
• Full Cortizo RAL palette plus anodised finishes
• Dual-colour available (different RAL inside vs outside)
• Designed to match the aluminium window and bifold range visually

Where it fits:

• Architect-led contemporary new builds where the entrance door visual matches the aluminium glazing schedule
• Properties where the kerb appeal priority is uninterrupted aluminium aesthetics from front to back
• Buyers who specifically want aluminium rather than composite or steel

For full Cortizo Millennium Plus coverage see our Cortizo Millennium Plus child URL and Cortizo brand hub.

How to Choose — Decision Tree

Start here: what is the property?

• Heritage / period property in a strict conservation area → Palladio Traditional is usually the conservation-officer-friendly composite. We check the specific designation at survey.
• Contemporary new build with aluminium-led glazing schedule → Cortizo Millennium Plus matches the visual language
• Most other UK premium homes → Palladio Contemporary or Traditional is the strong all-rounder default

Then check: what does the insurance underwriter require?

• No BS EN 1627 requirement → Palladio is sufficient (PAS 24 + Secured by Design configurations available)
• RC2 minimum required → Gerda at any range tier (RC2 standard across the range)
• RC3 minimum required → Gerda Optima or Thermo Premium with RC3 upgrade
• RC4 minimum required → SteelR in single-leaf unglazed configuration

Finally: what is the property risk profile?

• Standard suburban property, no specific risk triggers → Palladio
• High-net-worth contents, rural location, higher-crime postcode → Gerda RC2 minimum
• Ultra-premium contents, isolated property, sustained-attack risk → SteelR RC4

For more on the security tier comparison see Gerda RC2 vs RC3 Steel Doors, What Is Secured by Design, and How Much Do Steel Doors Cost UK.

Pricing

Vitrum Solutions is a quote-driven business and we do not publish fixed price tables. The four brands sit at different price points:

• Palladio — premium composite tier, the default mainstream specification
• Cortizo Millennium Plus — comparable to or slightly above Palladio, varies with frame depth and configuration
• Gerda — premium steel security tier, materially above composite
• SteelR — ultra-premium tier, the highest-priced entrance door we install

For industry pricing context see How Much Do Steel Doors Cost UK. Final price is set after a free no-obligation survey at your property.

Other Brands in the UK Composite Door Market

The UK composite door market has multiple brands not on our installation list. Vitrum Solutions does NOT supply or install Solidor, Endurance, Rockdoor, Dynamic or other composite brands — these are referenced for comparison context only.

For comparison context see Palladio vs Solidor Composite Doors and Best Composite Doors UK.

Frequently Asked Questions

Which entrance door brand is best for most UK homes?

For most UK premium homes the right answer is Palladio. The 65mm GRP fibreglass monocoque slab delivers excellent thermal (0.85 W/m²K solid), strong security (PAS 24-compliant 10-point locking, Secured by Design configurations available), a 12-year door slab warranty (among the longest in the UK premium composite category), and the design range covers heritage and contemporary briefs. Steel security doors (Gerda, SteelR) are commercially right only when the insurance, occupancy or risk profile justifies the upgrade.

When does a steel security door make commercial sense over composite?

Three triggers move the answer from composite to steel: (1) the insurance underwriter requires BS EN 1627:2011 RC2 minimum on the front entrance, (2) the property contents value, location risk profile or occupancy pattern justifies the upgrade independent of insurance, or (3) the property is rural or isolated where neighbour-led intervention is unlikely. For most standard suburban properties without one of these triggers, Palladio is sufficient.

What is the difference between Gerda RC2 and SteelR RC4?

Both are tested to BS EN 1627:2011. RC2 means the door resists a casual burglar with simple tools (screwdrivers, pliers, wedges) for at least 3 minutes. RC4 is tested against heavy-duty hand tools and battery-operated power tools (drills, jigsaws, oscillating saws, larger crowbars), the next attack tier above RC3. RC2 covers the typical opportunistic UK burglary; RC4 covers sustained motivated attack on a property where insurance or occupancy demands beyond the residential minimum. See Gerda RC2 vs RC3 Steel Doors for the full breakdown.

Why don't you stock Solidor, Endurance or Rockdoor?

The construction method is the simple answer. Solidor, Endurance and Rockdoor build composite doors around a bonded-skin construction — a foam or timber core with separate outer skins glued to the core. Over a 25-30 year UK climate exposure with thermal cycling, repeated wetting and shadow-line stress on the south-facing elevation, the bonded skin can delaminate from the core, the seam can open, or moisture can ingress at the skin-to-frame junction. Palladio's 65mm GRP fibreglass monocoque is structurally different: a one-piece moulded fibreglass shell with no seams, no bonded skins and no weak points. We have audited each of those alternative brands at quote stage on past projects and have settled on Palladio as the only composite specification we are confident putting a 10-year CPA insurance-backed installation guarantee against. The decision is product-led, not commercial.

Can I have an aluminium entrance door instead of composite or steel?

Yes. Cortizo Millennium Plus 70 / 80 is the aluminium entrance door we install. It fits architect-led contemporary new builds where the entrance door visual matches the wider aluminium glazing schedule (windows, bifolds, sliders). Aluminium entrance doors typically do not match composite on thermal (Palladio's GRP fibreglass slab is warmer than aluminium framing) or steel on security (PAS 24 vs BS EN 1627 RC2/RC3/RC4), but they win on the contemporary aluminium aesthetic. See Aluminium vs Steel Front Doors.

FENSA covers windows and external doors — does that include all Palladio, Gerda, SteelR and Cortizo Millennium Plus configurations?

Yes. FENSA registration covers all four brands across all the configurations we install. FENSA's scheme covers replacement windows AND external doors in dwellings against Approved Document L (thermal performance) and Approved Document Q (security in dwellings, England and Wales) compliance. Palladio composite doors with double or triple-glazed glass units, Gerda steel doors with or without sidelights and across all four ranges (ALTUS, OPTIMA, THERMO PRIME, THERMO PREMIUM) at RC2 standard or RC3 upgrade, SteelR RC4 single-leaf unglazed configurations, and Cortizo Millennium Plus 70 / 80 with the full Cortizo glazing options are all FENSA-registerable replacement entrance doors. Every Vitrum Solutions installation across all four brands is FENSA-registered with the local authority within 14 days of completion, plus the 10-year CPA insurance-backed installation guarantee covering the workmanship. The certification documentation is supplied automatically for the policy file or planning condition.

Which entrance door brand has the longest warranty?

Palladio's 12-year warranty on the door slab is among the longest in the UK premium composite entrance door category (most premium composite competitors offer 10 years on the slab). Gerda's manufacturer warranty varies by range. SteelR carries a tiered warranty: 3 years lock, 5 years decorative finish, 10 years door construction. Cortizo Millennium Plus carries the standard Cortizo system warranty. All four come with our 10-year CPA insurance-backed installation guarantee on the workmanship.

Getting a Quote

Vitrum Solutions installs Palladio (composite), Gerda (steel RC2/RC3), SteelR (steel RC4) and Cortizo Millennium Plus (aluminium) entrance doors across Buckinghamshire, Berkshire, Oxfordshire, Surrey, Hampshire, Hertfordshire and West London. Request a free quote and we will specify the right brand and configuration for your property based on the security tier needed, the architectural language, and the wider glazing schedule.

For category-level coverage see our Entrance Doors hub. For brand-specific reviews see Palladio Doors Review, Gerda Steel Doors Review, and Aluminium vs Steel Front Doors.