What are resistance classes for security doors?
Resistance classes (RC) are a European standardization system that determines how well a door can withstand break-ins. According to EN 1627, this classification divides designs into levels of protection, from basic RC1 to professional RC6.
RC1: Basic protection against physical force
RC1 is the initial, minimum level designed to deter the simplest break-in attempts without tools.
Who is the attacker?
A random, spontaneous intruder with no special training and no burglary tools. This is more likely to be someone who has seized an opportunity than a professional burglar with a clear, step-by-step plan.
Level of resistance
A door can withstand kicks, shoulder charges, or other forms of physical pressure.
Best for
This level of protection is suitable for premises with virtually no burglary threat, such as garden sheds, barns, utility buildings, and interior doors in residential and commercial developments.
RC2: Residential safety standard
RC2 is the next level of protection, providing a full-fledged barrier against an attacker with a tool in hand. These doors capable of withstanding not impulsive pressure, but a deliberate attempt at break-in.
Who is the attacker?
This is a prepared intruder—armed with a screwdriver, pliers, or wedges—expecting a quick, quiet entry. Typically, these burglars act alone, aiming to enter within minutes.
Level of resistance
The RC2 door is designed to resist attempted break-ins using simple hand tools for at least three minutes. During this time, the intruder will most likely give up—it takes too long, is too noisy, and is too risky.
Best for
Ideal for apartments, homes in average-risk areas, and exterior doors to small offices.
For most homeowners, an RC2-rated door provides a significant security upgrade and the best balance of cost and protection.
RC3: High-level protection for increased risk
RC3 is a really good level of protection to aim for if the security of your property is a priority. These doors are built to withstand skilled intruders.
Who is the attacker?
An experienced criminal who knows what he is doing and has committed more than one burglary. He may use more substantial tools, including even crowbars. Such intruders are willing to spend time and effort to break into a premises.
Level of resistance
The door can withstand the impact of crowbars or other tools for 5 minutes. During this time, the criminal will most likely not be able to get inside, even if they work hard. The only thing that will help them overcome this protection is professional equipment and more time, which they usually do not have.
Best for
The RC3 door is the best solution for houses in high-risk areas, business centers, and properties with valuable assets, such as warehouses or offices with important documents and equipment.
Brief overview: Comparison of RC1, RC2, and RC3
|
Feature / Resistance class |
RC1 |
RC2 |
RC2 |
|
Rating |
Basic protection |
Improved security |
Moderate resistance |
|
Tools resisted |
No tools. Only physical force |
Screwdriver, pliers, or wedges |
Basic and advanced tools (e. g., crowbars) |
|
Resistance time |
1 minute |
3 minutes |
5 minutes |
|
Ideal application |
Garden sheds, barns, utility buildings, and interior doors |
Apartments, houses in areas with average risk, and exterior doors to offices |
Houses in high-risk areas, business centers, and properties with valuable assets |
How to choose the right security class for an exterior door?
A sturdy door is essential. Select the right resistance class by factoring in not just specifications, but your lifestyle.
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Assess the risk level in your area.
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Consider the type of property.
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Install the door yourself, following the instructions, or contact professionals.
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Check certification.
Choosing the right RC is an investment in your safety and peace of mind.
FAQ
Is a higher RC rating always better?
A higher RC rating provides better security, but may be unnecessary, at least in terms of cost. Choose based on your property’s specific needs.
Does RC rating apply to the whole door unit, including the frame?
Yes, RC rating applies to the entire door unit, including the slab, frame, locks, and hinges.
Can I upgrade my existing door to an RC rating?
Upgrading an existing door to meet an RC rating is very difficult and often not possible. Certified RC doors are tested as complete units, so replacing some parts won’t guarantee compliance.
Are there higher RC ratings for doors?
Yes. Higher ratings (such as RC4, RC5, RC6) exist and are used in high-security buildings such as banks or government facilities. :contentReference[oaicite:2]{index=2}