The Hörmann TGT Decotherm is the definitive rolling shutter solution engineered specifically for high-traffic collective garages and underground parking facilities.
Designed to bridge the gap between residential quietness and industrial durability, this "Underground Garage Door" combines a compact, low-headroom design with a robust, double-skinned insulated curtain.
Key Highlights:
- Ultra-Quiet Performance: Unique tension spring assembly ensures whisper-quiet opening and closing, perfect for garages below apartments.
- High Durability: Engineered for intensive daily use with a service life of over 200,000 cycles.
- Space-Saving Design: Compact roll-up mechanism requires minimal headroom, ideal for tight renovation spaces.
- Thermal Efficiency: Double-skinned insulated curtain provides security while reducing heat loss.
It provides the perfect balance of security, efficiency, and reliability for apartment blocks, hotels, and office developments where noise reduction and restricted space are critical factors.
- Description
- Application
- Specification
- Installation
- Measure
Product Overview
The Hörmann TGT Decotherm is a specialised rolling shutter system designed specifically for collective garages, underground car parks, and multi-user residential complexes. Unlike standard industrial shutters, the TGT (Tiefgaragentor) is engineered for high-frequency daily use while maintaining whisper-quiet operation—a critical requirement for garages located beneath residential apartments.
Featuring the robust Decotherm S double-skinned steel curtain, this model combines the security of a solid door with the compact, space-saving mechanics of the TGT system. It is the ideal solution where thermal insulation, noise reduction, and physical security are the primary concerns.
Key Features & Benefits
1. Robust Decotherm S Curtain
The core of this system is the "Decotherm S" profile—a double-skinned, galvanised steel curtain filled with rigid PUR foam. This construction offers significant advantages over single-skinned or open grille doors:
- Thermal Insulation: UD = 3.9 W/(m²K) (individual section); reduces heat loss in heated garages or prevents cold air from permeating into adjacent living spaces.
- Stability: The "S" profile is crafted from special hard steel, offering superior resistance to denting and impact damage compared to standard aluminium.
- Quiet Operation: The foam core acts as a sound damper, significantly reducing the "rattle" often associated with roller shutters during operation.
2. Compact Space-Saving Design
The TGT system is engineered for renovation and tight spaces. The door rolls up compactly behind the lintel, requiring very little headroom.
- Headroom Requirement: Only 380 mm required (Decotherm S/A).
- Side Room: Minimal side clearance allows for maximum drive-through width.
- Ceiling Free: Unlike sectional doors, the ceiling remains entirely free for lighting, sprinklers, or ventilation pipes.
3. Advanced Drive Technology (WA 300 R S4)
Standard delivery includes the WA 300 R S4 operator, which is purpose-built for collective environments:
- Soft-Start / Soft-Stop: Ensures the door opens and closes smoothly, minimising noise transmission to residents sleeping above.
- Integrated Safety: The intelligent drive system monitors power usage. If it encounters an obstruction, it stops and reverses immediately. This often removes the need for a vulnerable "safety edge" sensor at the bottom of the door, increasing reliability and reducing maintenance costs.
- Service Life: Designed for 200,000+ total door cycles (Open/Close).
4. Tension Spring Assembly
Unique to the TGT range, the barrel mechanism includes a tension spring assembly that supports the motor:
- Wear Protection: The springs carry the weight of the curtain, meaning the motor and gears are subjected to far less stress, extending the lifespan of the operator.
- Emergency Operation: In the event of a power failure, the door can be easily disengaged and opened manually by hand, ensuring residents are never trapped.
Application Suitability
The Decotherm TGT is best suited for:
- Apartment Blocks: Where bedrooms are located directly above the garage entrance.
- Secure Parking: Where visual privacy and physical break-in resistance are required (unlike open grilles).
- High-Traffic Zones: Capable of handling the entrance and exit traffic of medium-sized residential buildings.
Standard Equipment
- Curtain: Decotherm S (Galvanised Steel) with plastic wind locks.
- Finish: Galvanised natural finish (standard) or choice of RAL colours (RAL 9002, 9006 preferred).
- Control: Integrated control unit with push button DTH-R.
- Safety: Anti-lift kit (break-in resistance), finger-trap protection, and power limit safety as standard.
For full technical details including wind load performance, fitting dimensions, and electrical specifications, please refer to the Hörmann TGT technical manual.
The Hörmann TGT Decotherm has been specifically engineered to meet the demanding requirements of underground and collective garages, particularly in mixed-use residential and commercial developments where quiet operation, security, and thermal performance are essential.
Ideal Applications
Residential Apartment Buildings
The TGT Decotherm is the preferred solution for multi-storey apartment blocks where the garage entrance is located directly beneath living spaces. Key benefits include:
- Ultra-Quiet Operation: Soft-start/soft-stop function and foam-filled curtain minimise noise transmission to residents above.
- Thermal Barrier: Prevents cold air from underground car parks entering stairwells and ground-floor apartments.
- High Cycle Life: Designed to handle frequent daily use from multiple residents (up to 300 cycles per day).
- Compact Installation: Only 380 mm headroom required, making it ideal for renovation projects with tight ceiling clearances.
Underground Car Parks
For commercial and public underground parking facilities, the TGT Decotherm offers robust performance and security:
- Secure Night Closure: Double-skinned steel curtain with
Technical Specification: Hormann TGT Decotherm
Dimensions & Performance
- Max. Width: 5000 mm
- Max. Height: 2400 mm
- Headroom Required: Only 380 mm (Compact design)
- Cycle Life: Designed for >200,000 door cycles
- Daily Usage: Up to 300 cycles per day
- Opening Speed: Approx. 0.15 m/s (Standard WA 300 R S4)
Curtain Construction (Decotherm S)
- Material: "Full Hard" Galvanised Steel
- Profile Type: Double-skinned with PUR rigid foam core
- Thermal Insulation: U = 3.9 W/(m²·K) (individual section)
- Acoustic Rating: Approx. 18 dB (Rw value)
- Curtain Weight: Approx. 10 kg/m²
- Finish: Galvanised with transparent protective coating (Standard), optional RAL colours
Drive & Control
- Operator: WA 300 R S4 (Optimised for collective garages)
- Voltage: 230 V / 1-phase (Standard domestic supply)
- Operation: Soft-Start / Soft-Stop for quiet running
- Safety: Integrated power limit (Standard); usually removes need for safety edge
- Emergency Opening: Manual release via tension spring counterbalance (effortless hand operation)
Security & Installation
- Wind Load Class: Class 2 (Standard for TGT Decotherm)
- Locking: Anti-lift kit included as standard to prevent forced lifting
- Guide Rails: Galvanised steel with integrated spring chambers
- Fastening: Suitable for concrete, brickwork, steel, or timber structures
| |
Rolling shutter SB | Rolling grille SB | Rolling shutter / rolling grille TGT | |||||
| Decotherm | HR 120 | HG-L | HG-75 | Decotherm | HG-L | |||
| S | A | aero | S | |||||
| Wind load EN 12424 | Class 2 up to door width in mm | 5000 | 5000 | 4000 | – | – | 5000 | – |
| Higher wind loads on request | – |
– | – | – | – | – | – | |
| Wind lock | ● | ● | ● | – | – | ● | ● | |
| Water tightness EN 12425 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Thermal insulation |
Appendix B EN 12428 |
3.9 | – | – | – | – | 3.9 | – |
|
Shutter 4 x 4 m, |
4.1 | – | – | – | – | 4.2** | – | |
| Accoustic rating | Shutter 3.5 × 2 m, fitted (Rw = dB) | 18 | – | – | – | – | 18 | – |
| Door sizes | Max. width mm | 5000 | 5000 | 4000 | 6000 | 6000 | 5000 | 6000 |
| Max. height mm | 4500 | 4500 | 4000 | 4500 | 3500 | 2400 | 2400 | |
| Space requirements | See the technical manual | |||||||
| Curtain material | Single-skinned steel | – | – | – | – | – | – | – |
| Double-skinned steel | ● | – | – | – | – | ● | – | |
| Single-skinned aluminium | – | ● | ● | ● | ● | – | ● | |
| Double-skinned aluminium | – | – | – | – | – | – | – | |
| Curtain surfaces | Galvanised steel | ● | – | – | – | – | ● | – |
| Galvanised steel coated in RAL 9002 | ◌ | – | – | – | – | ◌ | – | |
| Galvanised steel coated in RAL 9006 | ◌ | – | – | – | – | ◌ | – | |
| Galvanised steel coated in RAL to choose | ◌ | – | – | – | – | ◌ | – | |
| Bright-rolled aluminium | – | ● | ● | – | – | – | – | |
| Stucco-textured aluminium | – | – | – | – | – | – | – | |
| Aluminium coated in RAL 9002 | – | ◌ | ◌ | ◌ | – | – | ◌ | |
| Aluminium coated in RAL 9006 | – | ◌ | ◌ | ◌ | ◌ | – | ◌ | |
| Aluminium coated in RAL to choose | – | ◌ | – | ◌ | ◌* | – | ◌ | |
| Anodised aluminium E6 / EV 1 | – | – | – | ◌ | – | – | ◌ | |
| Mill-finished aluminium | – | – | – | ● | – | – | ● | |
| Weight of curtain | approx. kg/m2 | 10.3 | 6.0 | 5.5 | 6.5 | 6.7 | 10.3 | 6.5 |
| Side door | matching the door | ◌ | ◌ | ◌ | – | – | ◌ | – |
| Glazing | Standard arrangement | ◌ | ◌ | – | – | – | ◌ | – |
| Logistics arrangement | ◌ | ◌ | – | – | – | ◌ | – | |
| Seals | All-round on 4 sides | ◌ | ◌ | – | – | – | ◌ | – |
| Break-in resistance | WK 2 DIN V ENV 1627:1999 | – | – | – | – | – | – | – |
| Pull-out protection | ● | ● | ● | ● | ● | ● | ● | |
| Internal locking | ◌ | ◌ | ◌ | ◌ | ◌ | ◌ | ◌ | |
| Internal / external locking | ◌ | ◌ | ◌ | ◌ | ◌ | ◌ | ◌ | |
| Security equipment | Finger trap protection | ● | ● | ● | – | – | ● | – |
| Side trap guard | ◌ | ◌ | ◌ | ◌ | ◌ | ◌ | ◌ | |
| Safety catch | ● | ● | ● | ● | ● | ● | ● | |
| Fastening options | Concrete | ● | ● | ● | ● | ● | ● | ● |
| Steel | ● | ● | ● | ● | ● | ● | ● | |
| Brickwork | ● | ● | ● | ● | ● | ● | ● | |
| Timber | ● | ● | ● | ● | ● | ● | ● | |
● = Standard ◌ = Optional
| * | RAL 9016, RAL 7035, RAL 9006, RAL 5011, RAL 8028, RAL 7016, RAL 9005 |
| ** | Shutter 4 × 2.4 m, fitted |
This roller shutter is easier to install than many other models but we still recommend professional installation.
Samson Doors offer installation services for this door - please email or call.
Please contact us for proper configuration of this made to order roller door and we can also provide drawings for your approval
