SOMMER Group
United Kingdom

AquaLOCK® One-Piece Door – Flood Protection

High‑performance flood protection for garages and adjacent spaces.

One-piece garage door with flood protection

AquaLOCK® One‑Piece Door

AquaLOCK® provides integrated flood protection for garages and garage doors – the patented system retains up to 99.9% of water, tested and certified by IFT Rosenheim. It is the ideal solution for heavy rainfall, flooding, and flood‑prone garages.

One-piece garage door from inside with integrated flood protection

Key Advantages of the AquaLOCK® One-Piece Door

  • Everyday convenience – Operates smoothly via remote control, just like a standard garage door.
  • Exceptional flood protection – Blocks 99.9% of floodwater.
  • Certified performance – Up to 1.6 m protection (with 2.5 m door height), compliant with IFT guidelines.
  • Independently tested – Approved by the European Flood Protection Association e. V. and TÜV Süd.
  • Proven leak‑tightness – Average leakage only 0.0054 l/min/m² (Protection Class 1).
  • Custom-built – Tailored with millimetre precision for a perfect fit.
  • Fast installation – Delivered in the morning, installed by evening.
Flood‑protection one‑piece garage door partially surrounded by heavily contaminated floodwater

Flood Protection Garage Door

The AquaLOCK® One‑Piece Door is ift‑certified and designed for real flood scenarios. Even under extreme pressure, it restricts water ingress to max. 240 litres in 24 hours – minimal compared to the thousands of litres pressing against the structure.

AquaLOCK® – maximum protection when the water rises.

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Flood‑protection one‑piece door shown in a technical illustration with 1.6 m water level

Certified Flood Protection

AquaLOCK® One‑Piece Doors deliver automatic, certified flood protection for garages and underground parking entrances.

  • Available in galvanized or stainless steel
  • Up to 500 mm protection – or up to 1,600 mm, depending on door size
  • Doors up to 3,100 × 2,500 mm close automatically at the push of a button and activate full flood protection.
  • Larger doors up to 5,200 mm width can achieve 500 mm protection with additional locking mechanisms

Design Options

Customizable design – tailored to exact measurements with millimetre‑precision, offering extensive personalization through 213 RAL colours, optional light strips, stainless‑steel accents, real‑wood cladding, and more.

Flood‑protection for an underground parking garage during heavy flooding Interior view of a closed flood‑protection one‑piece garage door Closed gray one‑piece door with bottom seal providing flood protection
Large closed dark flood‑protection one‑piece garage door seen from inside One-piece garage door from inside with integrated flood protection White garage door with surrounding seal for flood protection
Technical Data
  • Multi‑spring package for door fall protection according to DIN EN 12604
  • Alternatively for underground garages: maintenance‑free counterweight technology
  • Stainless‑steel stop rail (optional delivery without rail)
  • Fully hot‑dip galvanized frame
  • Flexible side sealing strips in accordance with EU standards
  • Finger‑pinch protection
  • Self‑locking side latch (optional)
  • Lock with security profile cylinder
  • Handles mounted from the inside for theft protection
Extras
  • Window elements and stainless‑steel applications
  • Matching side entrance door in the same design
  • Integration of a wicket door into the main door
Flood‑protection for an underground parking garage during heavy flooding

Underground Parking Garage Door

The AquaLOCK® One‑Piece Door also delivers exceptional performance in underground parking garages, offering reliable security, robust engineering, and seamless daily operation.

  • Engineered for long service life and heavy daily use
  • Maintenance‑free counterweight technology
  • Low-noise mechanics for comfortable operation
  • Integrated safety systems
  • Effective forced-entry resistance
  • Multiple design options for architectural integration
SOMMER garage door operator with guide rail and running motor for quiet, maintenance‑free door operation

SOMMER Garage Door Operators – Powerful. Quiet. Maintenance‑Free.

  • Travelling motor system for ultra‑smooth and quiet operation
  • Maintenance‑free design thanks to a fixed, non‑rotating chain
  • Maximum durability with no friction or power loss
  • Smart control unit with optimised speed profiles
  • Precise force adjustment for perfect motion control
  • Self‑learning technology that adapts automatically over time
  • Optional battery backup ensures reliable operation during power outages

FAQ – AquaLOCK® One‑Piece Door Flood Protection

The AquaLOCK® flood‑protected one-piece door reliably prevents water ingress through an integrated sealing system.

The following points summarize its key features.

  • Integrated flood protection
    • The all‑round AquaLOCK® sealing system closes tightly and keeps water out without additional barriers.
  • High protection performance
    • Depending on the model, it withstands water levels up to 1,600 mm and blocks up to 99.9% of water.
  • Robust construction
    • The reinforced frame and door leaf resist strong hydrostatic pressure.

In short:
The AquaLOCK® door delivers certified, permanent flood protection built directly into the system.

The AquaLOCK® One‑Piece Door protects against flooding by using an integrated sealing system and reinforced construction that automatically creates a watertight barrier when the door is closed and locked.

The following points explain the key mechanisms that ensure reliable flood protection.

  • All-round flood sealing system
    • When locked, the sealing profiles are pressed evenly against the frame and floor, creating a highly effective barrier that blocks up to 99.9% of incoming water.
  • Mechanical compression when closing
    • The closing mechanism applies a defined pressure on the sealing system, ensuring a secure seal even under high hydrostatic pressure.
  • Reinforced frame and door leaf construction
    • The robust steel frame and stable door structure prevent deformation under heavy water load, maintaining reliable tightness up to 1,600 mm water height.

In short:
The AquaLOCK® One‑Piece Door provides effective flood protection through integrated sealing, mechanical compression, and reinforced construction—without the need for additional barriers.

The following provides an overview of the most important points regarding certifications and testing:

  • Tested Water Tightness
    • The up-and-over door has been tested according to recognized test procedures and demonstrates exceptionally high sealing performance against penetrating water.
  • Load Capacity and Functional Reliability
    • Multiple independent testing institutes confirm the stability and functional reliability, even under long-lasting water exposure.
  • Certifications by Industry Institutes
    • The AquaLOCK® product family has been tested according to relevant guidelines and certified by leading institutions.

In short:
The AquaLOCK® One‑Piece Door is demonstrably certified and therefore provides particularly reliable, tested, and durable flood protection.

The AquaLOCK® One‑Piece Door achieves, depending on the configuration, a protection height of up to 1,600 mm. This flood protection height has been confirmed by external testing institutes and corresponds to the certified performance range of the AquaLOCK® system.

The protection height is based on the door’s robust construction, the reinforced frame, and the integrated flood sealing system, which reliably seals even under strong hydrostatic pressure.

The most important information about the protection height:

  • Tested protection height up to 1,600 mm
    • The AquaLOCK® up-and-over door withstands water levels of up to 1.6 meters, providing effective protection for garages, basement entrances, and other vulnerable areas.
  • Certified watertightness
    • The system’s tightness has been tested and confirmed according to recognized guidelines, ensuring the stated protection height is reliably achieved.

In short:
The AquaLOCK® One‑Piece Door reliably protects against flooding up to a height of 1,600 mm, offering a high‑performance solution for buildings in at‑risk areas.

Yes, the AquaLOCK® One‑Piece Door is ideally suited for use in underground garages and provides an immediately effective, integrated flood protection as soon as the door is closed.

Below are the key reasons why it is particularly effective for underground garages:

  • Reliable protection in sloped access areas
    • Since underground garages are located below street level, the door provides reliable protection against surface water, heavy rainfall, and backflow thanks to its near‑watertight sealing system.
  • High‑performance protection up to 1,600 mm
    • The door is designed for high water columns and withstands typical flooding scenarios at underground garage entrances.
  • Passive flood protection integrated into the door
    • No mobile barriers are required – protection is activated automatically by closing and locking the door.

In short:
The AquaLOCK® One‑Piece Door is a robust, immediately effective, and custom‑made solution that reliably protects underground garages from intruding water.

The AquaLOCK® flood‑protection one‑piece door offers numerous customization and design options, allowing you to equip any opening both functionally and visually to perfection.

To give you a clear overview, here are the most important options at a glance:

  • Individual color design
    • You can choose from more than 200 RAL colors, enabling the door to blend harmoniously with the façade or act as a deliberate design accent.
  • Material and surface variations
    • From stainless‑steel applications to wooden claddings, a range of high‑quality surfaces is available to meet specific architectural and design requirements.
  • Custom manufacturing and functional options
    • Each door is manufactured with millimeter precision and can be equipped with integrated light strips, fixed side elements, or transom windows – always flood‑resistant and tailored to the installation situation.

In short:
The AquaLOCK® flood‑protection one-piece door can be flexibly configured in terms of color, material, structure, and functionality, ensuring a perfect fit for any opening and architectural environment.

Yes, the AquaLOCK® One‑Piece Door is perfectly suited for daily use in residential and commercial buildings and, despite its integrated flood protection, offers the familiar operating comfort of a conventional up-and-over door.

To give you a quick overview, here are the key reasons why it is ideal for everyday operation:

  • Normal daily operation
    • The door can be opened and closed manually or optionally automated, just like a standard up-and-over door, without any limitations caused by the flood protection features.
  • Robust construction for frequent use
    • The frame, door leaf, and hinges are designed for intensive daily use, ensuring that the sealing function remains reliably effective over time.
  • Fully integrated flood protection
    • All protective components are built directly into the door and require no additional mobile elements—ideal for high‑traffic driveways.

In short:
The AquaLOCK® One‑Piece Door combines everyday operating convenience with permanently integrated flood protection, making it the perfect solution for residential buildings, underground garages, and commercial areas.

No, the AquaLOCK® One‑Piece Door does not require any additional barriers or sandbags, as the flood protection is fully integrated into the door and becomes effective automatically when closed. This ensures your driveway remains protected at all times without the need for extra measures.

To give you a quick overview, here are the key advantages:

  • Integrated flood‑sealing system
    • The all‑around sealing system reliably seals the door and fully replaces traditional sandbags or mobile protection solutions.
  • Automatic activation when locked
    • The flood protection activates immediately as soon as you close the door—without any additional structures or manual steps.
  • Certified protection without extra effort
    • The door independently withstands water levels of up to 1,600 mm, providing instant protection even during sudden heavy rainfall.

In short:
The AquaLOCK® One‑Piece Door protects you reliably without additional barriers or sandbags—the complete flood protection is already safely and permanently integrated into the door.

Yes, the AquaLOCK® One‑Piece Door significantly enhances burglary protection and provides noticeably greater security than a conventional up-and-over door thanks to its reinforced construction.

To give you a quick overview, here are the key advantages:

  • Reinforced frame and door‑leaf construction
    • The robust steel frame and solid components make forced break‑in attempts considerably more difficult and offer substantially higher resistance than standard doors.
  • Compression and locking mechanism
    • When closed, the door generates strong contact pressure, ensuring a tight mechanical engagement with the frame, which makes prying it open nearly impossible.
  • Patented sealing system
    • The all‑around sealing profiles also act as a barrier, as tools can hardly be inserted between the door and the frame.

In short:
The AquaLOCK® One‑Piece Door offers significantly increased burglary protection compared to conventional up-and-over doors thanks to its reinforced construction, powerful locking mechanism, and patented sealing system.

The AquaLOCK® One‑Piece Door can be activated very quickly, as the flood protection is fully integrated. As soon as the door is closed and locked, the sealing system activates automatically—without any additional steps, tools, or external barriers. This means the protection is available within seconds.

Why activation is so fast:

  • Automatic activation when locked
    • The flood protection is triggered directly when closing the door. No additional steps or manual installations are required.
  • Integrated compression system
    • When locked, the door automatically generates the necessary contact pressure on the seals, making the system fully functional immediately.
  • No mobile protection systems required
    • Unlike sandbags or mobile barrier systems, no installation effort is needed. This saves valuable time—especially during sudden heavy rainfall.
  • Ideal for spontaneous flood situations
    • Since only closing the door is required, the system provides instant protection even during unexpected weather events.

In short:
The AquaLOCK® One‑Piece Door activates its flood protection immediately when closed and locked—within seconds and without any additional measures.

Yes, the AquaLOCK® One‑Piece Door is compatible with SOMMER garage door operators. Since the door is designed for electric operation and can be closed by remote control directly from the factory, it can be used with standard one‑piece door operators. SOMMER operators such as base+, pro+, or tiga are among the common compatible systems.

Why SOMMER operators are suitable:

  • Electric operation provided as standard
    • The AquaLOCK® One‑Piece Door is typically operated with an electric operator.
  • SOMMER operators support one‑piece doors
    • The SOMMER models base+, pro+, tiga, and tiga+ are designed for various one‑piece door sizes and offer sufficient power reserves as well as flexible installation options.
  • Ideal for daily operation
    • SOMMER operators are durable, low‑maintenance, and designed for high usage frequency—ideal for residential buildings, underground garages, or commercial applications.

In short:
Yes – the AquaLOCK® One‑Piece Door is fully compatible with SOMMER garage door operators. The combination is technically straightforward, reliable, and well‑suited for everyday use.

No, the AquaLOCK® One‑Piece Door does not require any special maintenance. The integrated flood‑protection system is designed to operate reliably over the long term and requires only minimal care during everyday use.

To ensure long-lasting tightness and functional reliability, here are the most important recommended measures:

  • Regular visual inspection of the seals
    • Check the all-around seals occasionally for dirt, wear, or damage to maintain optimal sealing performance.
  • Cleaning of frame and sealing surfaces
    • Clean contact surfaces ensure optimal tightness. Remove dirt, dust, and leaves regularly from the sealing areas.
  • Annual professional maintenance
    • A professional inspection ensures that seals, mechanics, and locking components remain reliable in the long term—especially with frequent use.

In short:
The AquaLOCK® One‑Piece Door is very low‑maintenance. A simple routine of visual checks and cleaning, combined with annual professional servicing, is sufficient to ensure long-term protection and functionality.

Yes, AquaLOCK® systems are tested and certified by several independent testing institutes. These external tests confirm the high watertightness, structural durability, and functional reliability of the AquaLOCK® flood‑protection solutions. As a result, the systems are proven to be reliable and meet recognized standards and quality requirements.

The most important independent testing institutes include:

  • ift Rosenheim
    • Testing and certification according to applicable flood‑protection guidelines, including the ift directive FE‑07/1‑2005 for flood‑resistant building components.
  • European Flood Protection Association (EVH)
    • Independent certification of technical flood‑protection systems, including tests with water columns up to 6 m.
  • TÜV Süd
    • Testing of technical safety, mechanical stability, and functional performance, including for the AquaLOCK® One‑Piece Door.
  • UL (Underwriters Laboratories) Montreal
    • Certification for extreme weather and hurricane‑resistant applications within the AquaLOCK® product line.

In short:
Yes – AquaLOCK® systems undergo extensive testing by independent institutes such as ift Rosenheim, TÜV Süd, the European Flood Protection Association (EVH), and UL Montreal. These certifications guarantee the high quality and reliable flood‑protection performance of AquaLOCK® products.

Yes, the AquaLOCK® One‑Piece Door can be visually integrated seamlessly into the building façade, allowing for a harmonious and high‑quality appearance without any visible functional compromises.

To give you a quick overview, here are the most important options for visual integration:

  • Individual RAL color design
    • The door can be painted in almost any RAL color, enabling perfect alignment with façade colors, window frames, or architectural accents.
  • Surface and material options
    • High‑quality coatings, stainless‑steel applications, or wooden claddings enable a visual match to existing materials such as plaster, metal, or wood.
  • Custom manufacturing for any building structure
    • Thanks to millimeter‑precise production, the door fits cleanly, flush, and without interference into the reveal – ideal for both modern new buildings and existing façades.

In short:
The AquaLOCK® One‑Piece Door can be perfectly adapted to any building façade through custom colors, materials, and precise made‑to‑measure production, allowing it to blend harmoniously into any architectural concept.

Yes, in addition to the One‑Piece Door, AquaLOCK® offers a wide range of other flood‑protection products that allow you to secure buildings comprehensively. This ensures that you can find the right solution for almost any opening and installation situation.

Here is an overview of the most important alternatives:

  • AquaLOCK® door systems
    • Flood‑resistant doors for entrances, side doors, and technical rooms, enabling protection heights up to the meter range.
  • AquaLOCK® sectional doors
    • Particularly suitable for garages and commercial spaces, offering integrated flood protection with high stability depending on the configuration.
  • AquaLOCK® Quickwall and flap systems
    • Mobile barriers as well as flaps and closures for shafts, light wells, and small openings—ideal for flexible or hard‑to‑reach areas.

In short:
Yes – AquaLOCK® offers a complete portfolio of flood‑protection solutions, including doors, gates, mobile systems, and custom‑made components for comprehensive building protection.