Construction and durability
Walls, doors and glazing in penetration resistance (RC) and ballistics (FB) classes, dimensioned for dwell time.
Infrastructure
Safe rooms, shelters and protected infrastructure
Safe room (safe room) dimensioned for the delay time before help arrives — from the scenario to the technical specifications according to which they will be built.
protective layer designtechnical specificationscontinuity with the operation of the facility
He is responsible for this service
Thomas Gaudete
Founder · Group CEO
First the reality, only then the measure.
Most homes are designed for comfort, not for minutes when someone is conquering inside. A safe room addresses these very minutes: a defined place for the family to retreat to and last longer until help arrives. The cover solves a different situation — days to weeks of staying in a pressure wave or air contamination. Protected infrastructure, on the other hand, keeps things running without which the facility does not function. Each of these spaces is dimensioned differently; what they have in common is that the proposal starts with a script, not a catalog.
- An ordinary door will delay an attacker for seconds; the space is dimensioned for the delay time in proportion to the arrival of help.
- The number of entrance openings — doors, windows, penetrations — determines the weaknesses and the price more than the area of the walls.
- The connection must work independently of the home network and electricity, otherwise the space just postpones the problem.
- A room where the family can't wake up in seconds won't help in a nighttime scenario.
Scope
What the product is — and what it isn't.
Includes
- Assessment of the facility, risk profile and scenarios: intrusion, contamination, network failure.
- Location selection a layer design: construction, access, connections, energy, filter ventilation.
- Technical specification p resistance classes elements (RC according to EN 1627, FB according to EN 1522).
- Operating mode and rules for space users.
- Coordination with the architect and subsequent implementation (GBH Bunker).
Does not include
- We do not guarantee absolute safety — residual risk always remains.
- We don't build ourselves; we supply the design and technical specification.
- We do not carry out armed protection or physical intervention.
- We do not deal with third-party tracking or screening.
Procedure
First the reality. Then measures.
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01
Assessment
Assessment of the object
We map the risk profile, layout and entrance openings of the object and define scenarios: nocturnal entry, longer stay during contamination, network outage. We derive the required dwell time from them.
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02
Proposal
Design of protective layer
We select the location according to the night range of the family and the number of openings and design the layers: construction in classes of resistance, access, connection independent of the network, energy, filter ventilation.
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03
Technical assignment
Technical assignment
We will prepare drawings and specification of elements in resistance classes (RC according to EN 1627, FB according to EN 1522), according to which the implementation company can build and the owner can check.
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04
Commissioning
Commissioning
We will check the doors, gas tightness of penetrations, overpressure and connections, go through the process of closing the space with the users and hand over the operating mode.
Coverage
A solid door without connection, power and air is not protection. We size each domain for the same scenario.
Access and detection
Access control, enclosure breach detection and alarm based on how the object actually lives.
Communication and calling for help
A connection independent of the home network and electricity, a backup route and a clear procedure of who to call.
Energy and media
Backup power, water and heating for the period of self-sufficiency — one for the room, another for the shelter.
Air and environment
Filter ventilation device (FVZ), positive pressure ventilation, gas-tight penetrations, explosion-proof valve for covers.
Output for management
Safety concept and technical specifications
Document (PDF) + drawing and technical annex for implementation
What the document contains
- Risk profile, usage scenarios and required dwell time
- Selection of location and design of layers by individual domains
- Specification of elements in resistance classes (RC, FB, glazing)
- Operating mode and rules for space users
- Time of delay and self-sufficiency measurably, knowing the residual risk
We hand over the document according to which the implementation company can build and the owner can decide — not a marketing presentation of threats.
Role and mode
Who decides and how we cooperate.
- 01
Project Manager (single contact)
One responsible person for the entire contract, from assessment to delivery of the assignment.
- 02
Technical specialist
It is responsible for construction, filter ventilation and energy — and for the feasibility of the solution in your facility.
- 03
Implementation coordination
Liaison with the implementation company so that the design survives construction.
Operational log
- Work by project phases with a review at the end of each phase.
- Milestone approval by owner before moving on to the next phase.
- Handing over a complete assignment with an explanation for the user and implementation.
- Offered annual review of operating mode upon completion.
- A form of cooperation
- Primarily a one-off project in phases; the long-term review of the regime is optional, not mandatory.
- Time frame
- According to the scope of the object; we set the schedule and milestones after the initial assessment, not blindly up front.
- Inclusion in the project
- For new construction, we integrate into the architect's project — most effective moment; we are proposing an addition to the existing room.
- Scope by scenario
- The scope determines the scenario and number of entry holes, not the equipment catalog.
Discretion
The existence, address and parameters of the protected space are sensitive in themselves — who knows them weakens the protection. Therefore, the principles of operational security (OPSEC), i.e. the mode of working with sensitive information, apply: we work in the mode need-to-know, "only for absolutely necessary", and we only share information with people who really need it for their part of the job. We keep the documentation secure, we act inconspicuously on the spot, and no one can find out about the cooperation with us itself.
- Nondisclosure agreement as standard.
- Secure storage of drawings and documentation.
- Sharing information only on a need-to-know basis.
- Inconspicuous appearance on the spot, without marking.
Standards and the law
Trusted capacity, within the limits of the law.
- We specify doors and panels in resistance classes: RC according to EN 1627, FB according to EN 1522/1523, glazing according to EN 1063.
- Ventilation technology is based on the principles of protection against CBRN substances (chemical, biological, radiation and nuclear): filter ventilation, overpressure, gas tightness.
- Design within the limits of building law and fire safety, a team with qualifications in safety and construction fields.
- We select elements according to documented laboratory tests, not according to the manufacturer's marketing.
- Downtime and self-sufficiency stated measurably, not by promise.
We work within the limits of the law — within the framework of the relevant authorizations, building regulations and fire safety. We propose exclusively defensive, passive protection of the space and the people in it; we do not create any offensive capacity towards the surroundings. We handle personal data according to GDPR. We do not do what is outside the law.
Part of the GBH group
GBH Partners
Evacuation and transportation if the scenario calls for leaving instead of hiding.
GBH Capital
Investment division of the security infrastructure financing group.
GBH Cyber
Protected data and communication layer inside the object.
GBH Bunker
Production and construction division of the group — enclosures, doors, safes, filtration.
GBH Academy
Shelter training and family or staff behavior in a crisis.
Related services
All services
Protection of persons
Protection of persons
personal risk profile
graduated protection mode
transfer plan with variants
Leadership readiness
Preparing for a crisis
readiness assessment
crisis playbook
staff exercise (TTX)
Advisory
Security consulting
monthly risk brief
monitoring exposure changes
prioritized by impact
Questions for decision
Isn't a safe room an overkill?
For most households, yes, and we'll say so. It makes sense where there is a concrete increased risk and where help arrives later than the object itself can endure. We will first assess the actual situation — and safely recommend doing nothing.
Do you guarantee that the space will protect us?
Nope. No space gives absolute safety and residual risk always remains. We dimension the space for a defined delay time against a defined attacker and for a period of self-sufficiency — so that it is clear what to realistically expect from him and what not.
Will it disrupt the normal running of the house or the operation of the facility?
The goal is the opposite. A good safe room is a commonly used room — dressing room, study, bedroom — that closes in a crisis. The dual use increases accessibility at night and the space is not a dead investment.
What happens to information about our space?
They will remain confidential. We work in a need-to-know mode, keep documentation secure and sign confidentiality agreements. Confidentiality does have legal limits, but no one can learn about the cooperation with us.
Are you building it all yourself?
Nope. We deliver a security concept and technical specifications. The implementation is carried out by a specialized firm — typically GBH Bunker or your supplier — and we make sure that the design survives construction.
What if the assessment finds a serious problem?
We'll tell you straight and describe the impact on your decision-making. We don't scare you — we sort the findings according to priority and suggest what to solve now and what can wait.
The first interview is non-binding
"We'll start with a non-binding, confidential conversation about your situation. We'll find out the real situation and say if and to what extent a protected area makes sense."
Tomáš Šlesinger · GBH Group Security Advisor
Contact us
The first step doesn't have to be big. It must be correct.
First contact protocol
First we understand the situation. Then we suggest the next step.
Briefly write what you are dealing with. We will contact you discreetly and arrange a safe call format.
Call safely