Security doors: RC classes, prices and how to choose

The front door is the first opening a burglar looks at, and often the first they try to force. Yet it’s also the item on which most people spend “at random”, choosing on panel aesthetics or price, without understanding what they’re really buying in terms of security. A security door isn’t a uniform block of steel: it’s a system made up of frame, sash, lock, cylinder, hardware and panels, and its real resistance depends on the weakest link. In this guide I explain the EN 1627 burglary-resistance classes (RC1-RC6), what actually changes from one class to the next, how the components that matter are built, and what the indicative prices are by class and finish.

A methodological note, because it matters here: all the prices, classes and figures you read are orders of magnitude and market ranges, not quotes or fixed data. They’re meant to give you your bearings, not to replace a site survey. The real price depends on the opening’s measurements, configuration, finish and region.

A note on standards: no EN 14351-1 here

For windows and French doors, the product standard is EN 14351-1, with CE marking. For the external pedestrian entrance door, the reference that matters from a security standpoint isn’t that one: burglary resistance is classified under the EN 1627 standard (adopted in Italy as UNI EN 1627), which defines the RC1-RC6 classes, supplemented by EN 1628-1630 for the physical tests. Marking and the declaration of performance of construction products remain governed by the CPR 305/2011 Regulation (CE marking and DoP), but the “security class” of a security door is read from EN 1627.

In practical terms: when assessing a security door, the right question isn’t “is it CE marked?” but “what RC class is it, and with what test certificate?”

Note: this article only covers security entrance doors (pedestrian doors). If you’re interested in the security of windows — laminated glass, multi-point hardware, RC classes on windows — that’s a different topic, covered in the dedicated guide to RC2 and RC3 burglary-resistant windows.

What the EN 1627 class actually measures

EN 1627 doesn’t measure “how thick the sheet steel is”. It measures how long, and with what tools, a person manages to breach the door in a laboratory test. Each class corresponds to a presumed burglar profile, a set of tools and a minimum resistance time. The test is physical: accredited technicians genuinely try to break through the sample.

This changes how you should think about it. An “RC3” door isn’t “more steel” than an RC2 one: it has resisted for longer against more aggressive tools in testing. Security is time, not weight.

Class	Presumed burglar	Tools	Resistance time (indicative)	Typical context
RC1N	Opportunistic, physical force	Kicks, shoulder charges, no tools	Force applied for a limited time	Upper floors, low risk
RC2	Opportunistic with basic tools	Screwdriver, pliers, wedges	~3 minutes	Flats, terraced houses in town
RC3	Determined and experienced	Crowbar, second screwdriver, percussion tools	~5 minutes	Isolated villas, exposed ground floor
RC4	Professional	Sledgehammer, axe, battery-powered saw	~10 minutes	High-profile, valuable assets
RC5-RC6	Professional with power tools	Angle grinder, hammer drill	~15-20 minutes	Extreme-security applications

The times are indicative and simplified: the exact test value depends on the revision of the standard and the laboratory report. They’re meant to give an order of magnitude, not to be quoted as fixed data.

Practical focus: RC2, RC3, RC4 for the home

For a home, the real question comes down to three classes. The others are either “included” (RC1) or outside the residential range (RC5-RC6).

RC2 — the sensible starting class. This is the reasonable standard for most homes: flats from the first floor up in an urban setting, terraced houses, blocks with a caretaker or controlled access. It resists a “screwdriver attempt”, which is statistically the most frequent scenario in home burglaries. Below this class, in a home, it rarely makes sense to go lower.

RC3 — the step up that matters for exposed contexts. This makes sense when the door is more vulnerable or more isolated: detached villas, houses with an entrance not visible from the street, ground-floor or raised-ground-floor flats with direct access, situations where the response of neighbours or security is slow. It’s the class most requested by those who have already experienced (or narrowly avoided) an attempted break-in.

RC4 — the high end, not always justified. This comes into play with documented valuable assets, specific at-risk profiles, isolated homes in areas with long response times. Above this threshold you’re outside “normal” residential territory: the extra cost and the bulk of the structure grow considerably, and it’s often worth investing in other weak points of the home before going up a class on the door alone.

The honest rule: the door shouldn’t be assessed on its own. An RC4 door next to a ground-floor window without laminated glass is an unbalanced expense. Security is the class of the weakest point, not of the best door.

How a security door is built: the components that determine the class

The declared RC class applies to the door as a complete system, as tested. Changing a “downstream” component (e.g. fitting a cheap cylinder in place of the one specified) can effectively lower the real security level below the certified class. Here are the points that matter.

Frame and sub-frame

The frame is anchored to the wall and is what transfers forces to the structure. On a serious security door it’s steel, with robust anchor bolts or fixings. A very strong sash on a poorly fixed frame is pointless: the point of attack simply moves to the anchoring.

Sash and steel sheets

The sash is the “door” itself: a steel shell with internal reinforcements and, typically, two or more sheets of steel. The higher the class, the greater the thicknesses, reinforcements and number of internal channels/uprights. This is the part that gives rigidity and resistance to being broken through.

Lock

Two main families:

• Double-bit lock: the classic “large key”. Robust, but harder to duplicate in a controlled way.
• Euro-profile cylinder lock: the modern “flat” key, now the most common. It allows security cylinders, card-based duplication and features such as reprogramming during construction.

On modern security doors, a multi-point locking system is common (bolts that engage at the top, bottom and sides), which distributes resistance across the whole perimeter of the sash rather than concentrating it at a single point.

Cylinder

This is often the weakest link, and the most underestimated. An RC3 sash with a poor-quality cylinder can be opened by bumping, picking or snapping in a few seconds, without even touching the structure. Features that matter:

• Anti-snap / anti-drill / anti-bumping: techniques that attack the cylinder alone, quickly.
• Defender (cylinder protection shield): protects the exposed part and prevents grip with pliers.
• Protected key / card-based duplication: prevents unauthorised copies.

Spending well on the cylinder is one of the few interventions with a low cost and high impact.

Hardware and burglary-resistance details

• Anti-snap pins/hinge bolts on the hinge side: prevent the sash being lifted off.
• Adjustable, reinforced hinges.
• Spyhole and guards that don’t become leverage points.

Panels and finishes

Panels are the external and internal cladding: they are not (typically) the structural part, but they define appearance, insulation and price. They range from economical laminate panels to wood veneers and lacquered finishes, up to weather-resistant exterior panels. This is where the price can vary considerably without changing the RC class: an RC2 door with a premium panel can cost more than an RC3 door with a basic panel.

Thermal and acoustic transmittance: the door isn’t just about security

An entrance door leading to the outside (or to a cold stairwell) is also a point of thermal and acoustic exchange. Two values to ask about:

• Thermal transmittance Ud (W/m²K): the lower, the better the insulation. A “security only” security door can have a high Ud (a cold door, with a risk of condensation on the inside face in winter). Versions with insulated panels, a thermal break and sealing gaskets bring this down considerably. Indicative figures: a basic security door can sit around 1.6-2.0 W/m²K, an insulated version with a thermal break can drop below 1.0-1.3 W/m²K — orders of magnitude, to be checked against the specific model’s datasheet.
• Sound reduction Rw (dB): relevant if the door opens onto a noisy landing or the outside. Indicative figures between ~32 and ~42 dB depending on gaskets, panels and sealing.

Aspect	What to ask	Why it matters
Security	EN 1627 class (RC2/RC3/RC4) + test certificate	This is the real resistance figure
Cylinder	Anti-bumping/anti-snap/anti-drill + defender	Often the weakest point
Thermal	The specific model’s Ud value	Comfort and condensation risk
Acoustic	Declared Rw value	Noise from landing/street
Sealing	Perimeter gaskets, threshold/cold-break strip	Draughts and real insulation

Indicative prices by class and finish

All the figures below are illustrative market ranges, referring to supply of the door alone (standard-size single door, finish as per row), fitting excluded unless stated otherwise. They are orders of magnitude to give you your bearings: only a quote for your specific opening will give you a real price.

Class + finish	Indicative price range (door only)	Notes
RC2, basic laminate panel	~€900-1,500	”Standard” residential entrance
RC2, premium wood/lacquered panel	~€1,400-2,300	The price rises for the finish, not the class
RC3, basic panel	~€1,600-2,600	A step up in structure and hardware
RC3, premium finish + high-security cylinder	~€2,200-3,500	Typical “well-specified” configuration
RC4, full configuration	~€3,500-6,000+	High end, outside the “average” residential range
Thermal-break insulated version (surcharge)	+€200-600 on the corresponding row	For low Ud and comfort

What moves the price, in order of real impact: RC class, lock and cylinder quality, panel finish (interior + exterior), insulation/thermal break, out-of-standard dimensions and accessories (side lights, transom, double sash). To understand how to think about window and door price ranges in general, the guide on what to check in a windows and doors quote is useful: the line items that make the difference are almost always the “technical” ones, not the aesthetic ones.

How to choose the right class for your context

Three recurring scenarios, with the reasoning behind them.

Flat in a block (first floor and above). Controlled access, neighbours, a landing: the most likely break-in scenario is “screwdriver, in a hurry”. A well-specified RC2, with an anti-bumping cylinder and a defender, covers the large majority of cases. If the building has had incidents, consider RC3.

Terraced or semi-detached house. A more exposed entrance, possibly less social oversight. RC2 as a minimum, RC3 if the entrance isn’t clearly visible from the street or if there are valuable assets. Here it’s also important to assess ground-floor windows: the best door is no use if the window next to it is standard civil-grade.

Isolated villa or unattended ground-floor entrance. Longer response times, a burglar who can work at leisure. RC3 is the reasonable starting point, RC4 where the risk profile justifies it. Here too: the door needs to be part of an overall assessment of all access points.

If you’re considering a complete intervention on the home (door + windows, perhaps in PVC), it can help to start from the general logic of the complete guide to PVC windows and doors to understand how security, insulation and budget combine, and then tackle the door as a standalone item. You’ll find all the types and configurations in the security doors section, within the full windows and doors range.

When it’s NOT the right choice

Being honest also means saying when “more” security door is a waste of money.

• When the weak point is elsewhere. An RC4 door alongside ground-floor windows without laminated glass and without burglary-resistant hardware is money poorly spent. Close the weakest link first, then move up a class on the door.
• When you’re paying for the finish thinking you’re paying for security. A premium panel is legitimate if you want that look, but it doesn’t raise the RC class. If the goal is security, the money goes on class, lock and cylinder, not on the cladding.
• When you fit a cheap cylinder on a high-class sash. You undermine the structure: the point of attack shifts to the cylinder. A lower class with a serious cylinder is better than the reverse.
• When the fitting is careless. A high-class security door poorly fixed to a weak sub-frame doesn’t deliver the certified class: the breaking point becomes the anchoring to the wall.
• When the context is genuinely low-risk. Upper floor, staffed block, no direct external access: going beyond RC2 can be over-specified. It’s better to invest the difference elsewhere (e.g. thermal comfort, windows).

FAQ

What’s the practical difference between RC2 and RC3? RC2 resists a “screwdriver, pliers and wedges” attempt for a time on the order of 3 minutes; RC3 resists more aggressive tools (crowbar, percussion tools) for a longer time, on the order of 5 minutes. In real terms, RC3 raises the bar against more determined and better-equipped burglars. The times are indicative and depend on the test report.

Does a security door follow the EN 14351-1 standard? No, that’s the product standard for windows and French doors. The security of the pedestrian entrance door is classified under EN 1627 (classes RC1-RC6). Marking and the declaration of performance remain under the CPR 305/2011 framework, but the burglary-resistance class is read from EN 1627.

Is the cylinder really that important? Yes, it’s often the weakest point. Techniques such as bumping, picking and snapping attack the cylinder directly without touching the structure. An anti-bumping/anti-snap/anti-drill cylinder with a defender is one of the interventions with the best cost/benefit ratio.

How much does a good residential security door cost, roughly? As an order of magnitude, an RC2 with a basic panel starts at around €900-1,500, a well-specified RC3 sits at around €2,200-3,500; premium finishes and insulation add extra cost. These are illustrative market ranges, fitting excluded: the real price depends on the opening and the configuration.

Does a security door also insulate against cold and noise? It depends on the model. A “security only” security door can have a high thermal transmittance (a cold door). Versions with insulated panels, a thermal break and sealing gaskets improve both thermal insulation (Ud) and acoustic insulation (Rw). Ask for the specific model’s figures.

Should I choose the same class for the whole house? No. The correct logic is to protect the weakest point: door and ground-floor windows in an adequate class, while less exposed access points can be a lower class. Spending everything on the door while leaving the windows exposed is the most common unbalanced expense.

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Want to understand which class makes sense for your situation, without being pushed towards RC4 when a well-specified RC2 would do? Request a quote: we assess context, exposure, access points and finish, and propose a security door sized to the real risk, with class, cylinder and thermal values declared in black and white.