Are you considering an RC5 or RC6 armoured door because you think “the higher the class, the safer I am”? It is an understandable line of reasoning, but for your home you are almost certainly aiming far too high.
Let me answer straight away, honestly.
RC5 and RC6 armoured doors are the two highest burglar resistance levels on the EN 1627 scale, designed for banks, vaults, jewellers and institutional buildings: for a home, even an isolated one, RC4 is already the right choice.
I realise this is the opposite of what you would expect from someone who sells armoured doors. But telling you to spend more on protection you do not need does not make you any safer: it just makes you pay a pointless premium.
Classes RC5 and RC6 exist to withstand attacks that a home almost never faces: professional burglars with heavy power tools, prepared to work for a long time on a single, extremely high-value target. A vault scenario, not a home one.
By reading the article right to the end you will understand:
- what RC5 and RC6 really are and who they are designed against
- what the difference is between the two
- who actually needs them in real life
- why RC4 is enough for your home, and what matters more than the class
Let us go through it point by point.
What RC5 and RC6 are for an armoured door
RC5 and RC6 are the top rungs of the European scale that measures how well a door resists a break-in attempt. This scale is called EN 1627 and divides armoured doors into six classes, from RC1 (the weakest) to RC6 (the most resistant).
The class is defined by a laboratory test: a break-in is simulated with increasingly powerful tools, and how long the door holds is measured. The higher the class, the greater the power of the tools used in the test and the resistance time required.
Classes RC5 and RC6 are designed to stop professional, organised burglars equipped with construction-grade power tools. Not the average household break-in, but those who plan the job, know what is behind the door and have the time and the means to keep at it.
To place them within the full scale and understand where the classes best suited to a home sit, we recommend reading the guide to the burglar resistance classes of armoured doors, where you will find the picture of all six levels.
The difference between RC5 and RC6
The difference lies in the power of the tools the door must resist and in the holding time required during the test. As the class rises, the laboratory uses more aggressive tools and demands that the door holds out for longer.
Class RC5 must resist an attack with power tools such as drills, reciprocating saws and angle grinders with a disc up to around 125 mm, for a time in the order of 15 minutes. It is the level designed for those facing skilled burglars with electric equipment.
Class RC6 is the absolute maximum: it withstands attacks with more powerful professional power tools, angle grinders with a disc up to around 250 mm, for a time in the order of 20 minutes. It is the grade reserved for targets at the very highest risk.
These minutes are indicative values set by the standard, measured in the laboratory under standard conditions. They serve to compare the classes with one another, not to promise that in real life a door will resist for exactly that time: in practice, how it is installed and the wall it is anchored to also matter.
Who really needs RC5 and RC6 armoured doors
They are needed where extremely high-value goods or sensitive data are kept, and where the risk of a targeted attack is real. These are doors for professional and institutional settings, before they are doors for homes.
The typical settings are these:
- Banks and vaults: access to areas holding cash and valuables, where the door is part of a complex security system.
- Jewellers and luxury watch shops: small, portable goods of enormous value, the classic target of planned raids.
- Embassies and institutional buildings: barracks, sensitive public offices, premises that can become a target for reasons beyond simple theft.
- Practices and offices with confidential data: notaries, solicitors, medical settings, archives with sensitive documents to protect.
- High-value isolated villas at high risk: extremely valuable residences in secluded areas, where the door works together with the alarm and CCTV within a broader security strategy.
The common thread is simple: in all these cases it is worth a burglar’s while to bring heavy equipment and work for a long time on that door. This is what justifies an RC5 or RC6, not the mere wish to “feel a bit safer”.
Do you really need an RC5 or RC6 armoured door for your home?
Almost certainly not: for the vast majority of homes, RC4 is already the right choice. And this is not a way to make you spend less at all costs: it is what genuinely makes sense, with the figures in hand.
A household break-in lasts a few minutes: the burglar wants to get in quickly, work quickly and disappear. Faced with a door that resists and makes noise, in the great majority of cases they give up and look for an easier target. A well-made RC4 stops them at exactly that stage.
Classes RC5 and RC6 raise the bar against attacks with heavy power tools and long timescales, scenarios that an ordinary home does not experience. You would be paying to withstand a siege that will not come, while the real risk, the quick, opportunistic raid, is already blocked by the lower class.
There is then a point that matters more than the class printed on the certificate: how the front door is made and how it is fitted as a whole. An RC4 with a good defender, a quality cylinder and a properly executed installation protects better than a higher class fitted badly. If you want to look into this further, read how a proper installation is carried out, because that is where a high class becomes real security.
For internal doors, RC4 models such as the Interior 4S already cover the needs of a home with a wide margin, even a detached one. You will find the right solutions among the internal armoured doors.
Do you want to understand which class is right for your home, without paying for protection you do not need?
We tell you honestly which level makes sense for your situation, even when it is in your interest to spend less.
Fill in the form with a few details about your home: we need them to recommend the right door for your real level of risk.
RC3, RC4, RC5 and RC6 compared
Here are the four most requested classes side by side, so you can see at a glance what changes and where you fit. The times are indicative values from the EN 1627 standard.
| Class | Indicative holding time | Tools resisted | Typical setting |
|---|---|---|---|
| RC3 | around 5 minutes | hand tools, levers, crowbar | flats in a block, safe areas |
| RC4 | around 10 minutes | heavy hand tools and first power tools | detached houses, ground floors, isolated areas |
| RC5 | around 15 minutes | power tools (drills, saws, grinders with 125 mm disc) | high-value shops, offices with sensitive data |
| RC6 | around 20 minutes | professional power tools (disc up to 250 mm) | banks, vaults, jewellers, institutional buildings |
As you can see, the useful jump for a home is between RC3 and RC4: there you are choosing based on where you live and how exposed you are. Going up to RC5 or RC6 only makes sense when the very nature of the threat changes.
Conclusions
RC5 and RC6 are the top of the burglar resistance scale, but they are made for banks, vaults and jewellers, not for homes. For your home, even an isolated one, RC4 already gives you protection with a wide margin against real-world burglaries.
What really makes the difference at home is not climbing to the highest possible class, but choosing the right level for your situation and taking care of the rest: a good defender, a quality cylinder and, above all, a well-executed installation. A properly made RC4 beats a higher class fitted badly.
If you want a door tailored to your real risk, without spending on a level you do not need, request a quote for your armoured door: we recommend the right class honestly, even when that means saving you money.
Frequently asked questions
Class RC6, under the EN 1627 standard. It is the maximum level on the six-class scale and resists attacks with professional power tools for a time in the order of 20 minutes. It is reserved for very high-risk settings such as banks, vaults and jewellers, not for homes.
Class RC6 resists more powerful tools and for longer than RC5. RC5 is tested against power tools with a disc up to around 125 mm for about 15 minutes, while RC6 is tested against professional tools with a disc up to around 250 mm for about 20 minutes. Both are designed for extremely high-value targets, not for the home.
In the laboratory test, a time in the order of 20 minutes against professional power tools. It is an indicative value set by the standard, useful for comparing the classes with one another: in real life, how long it holds depends greatly on how the door is installed and anchored to the wall.
In most cases RC3 or RC4. RC3 is fine for a flat in a block or in a quiet area, while RC4 is the right choice for a detached house, a ground floor or an isolated area. RC4 already stops household break-ins, which last just a few minutes, with a wide margin.
No, for a flat it is an expense out of all proportion to the real risk. RC5 is designed to resist heavy power tools and prolonged attacks, scenarios that a home almost never experiences. With that budget you get more by looking after the installation, defender and cylinder on a well-made RC4.
