Flood Protection Door
The Groke GT 190 is the first and currently only inward-opening aluminum front door that has been tested in accordance with EVH quality standards, Part B, and has been proven to withstand standing water.
As of September 2026
Our HWS – an EVH-certified flood protection system
Front doors typically open inward. However, this poses a significant challenge for flood protection: The water pressure from the outside acts directly in the direction the door opens.
The Groke GT 190 is designed to handle precisely this difficult scenario. The technical measures for flood protection were designed so that the door leaf remains securely closed even when water is standing outside—without compromising everyday usability.
Your Benefits of the Groke HWS
Important to know:
Many flood protection systems for doors are designed for outward-opening doors, where water pressure pushes the door in the direction of closure. For inward-opening doors—the standard for front doors in Germany—the technical requirements are significantly more demanding. The Groke GT 190 was developed specifically for this real-world application and has been successfully tested for it by the Europaverband Hochwasserschutz e.V..
From a design perspective, an outward-opening door may appear less inviting. Furthermore, it can look unappealing if the door moves directly toward the visitor when opened.
Integrated 24/7 flood protection
No separate barrier that needs to be set up in an emergency.
Specially designed for this type of load
Not just general flood protection, but specifically engineered to handle the challenging inward-opening mechanism.
Suitable for everyday use despite flood protection
Protection and normal front-door operation in one solution.
HWS Basic Configuration
- Standard Size
- 1,100 x 2,240 mm
- Minimum dimensions: 800 x 1,990 mm
- Triple glazing (“warm edge”) in door panels
- With P4A / WSG 9.5 mm on the outside;
- Promotional glass in the center;
- 6 mm laminated safety glass (VSG) on the inside
- Panel thickness 100 mm
- 3 sealing levels
- Two-piece screw-on hinges, three-dimensionally adjustable
- GU Secury Europa SH2 (handle-operated)
- Concealed mounting groove
Optional Features
- Pressure equalization valve
- For widths of 1101 mm or more, with
a side panel of at least 300 mm (Class 3 certified)
Security
Certified Security
The front doors shown here, with and without side panels, meet the requirements of DIN EN 1627, resistance class RC 2, and feature high-quality 9.5 mm-thick P4A laminated security glass on the exterior and 6 mm-thick laminated safety glass on the interior.
The police recommend that front doors for houses and apartments provide burglary protection through doors rated at least RC 2.
Information & Downloads
Here you'll find all the important documents related to our flood protection door—from instructions and checklists to certificates.
Modern. Secure. Customizable.
Your Custom Flood Protection Door
The right door ensures a harmonious overall look. We'll help you find the door of your dreams. Configure it yourself or work directly with a Groke dealer.