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Specifications
Certifications:
CE ETA-15/0338
TÜV NORD certified according to EN-ISO 14122-3, with label "Baumuster geprüft"
Aboma certificate
Roof hatch type RHT1025
Standard opening: 1000 x 2500 mm (Hinge side = long side)
Weight: 120 kg
Gorter® - completely assembled with:
- Thermal separated and insulated construction
- Counterbalancing system for assisted opening and controlled closing
- Double sealing for water and weather tightness
- Lid that engages automatically in open position, with release button
- Diagonal hand rail to safely enter and leave roof hatch
- Cylinder lock, in- and outside operation, with 3 point lock
Performance according to CE (ETA-15/0338):
- Resistance to permanent loads (Eurocode EN 1993-1-1): 1050 kg/m²
- Insulating (EN-ISO10077-2): Uw ≤ 0.32 W/(m².K)
- Sound reduction (EN-ISO140-3): 26 dB
- Watertightness (EN 12208): Class E 650
- Resistance to wind load (EN 12210): Class E 3000
- Resistance to snow loads (EN 1991-1-3): 3.97kN/m²
- Impact hard body (EN 356): Class P5A
- Impact soft body (EN 13049): Class 5
- Air permeability (EN 12207): Class 3
RHT powder coating:
Outside: powder coated in RAL7047
Inside: powder coated in white RAL 9010 (optional black RAL9004)
Fixed Stair type GS55
Gorter complete assembled. Aluminium, anodized.
Floor height: ........ mm
- Pitch adjustable from 55°- 65°
- Standard room height 3000 mm (55°) - 3370 mm (65°)
Step:
- Size 730 x 175 x 45 mm
- With anti skid profile
Accessories:
- Brackets for fixation on floor and in roof or ceiling opening
- 2 Handrails complete with poles.
IMPORTANT: ready for installation on site
Options
Gorter® Electrical Operation of Roof Hatches
Standard Electrical operation - GT35
The Gorter GT35 electrical operation is a solution, which can be fitted on any standard Gorter RHT roof hatch. The two powerful electric motors are always fitted as a pair on both sides of the lid.
Suitable for
- Roof hatches type RHT standard
Operation and control 230Vac
The Gorter GT35 is a system with two motors and a control unit. The system comes standard with a wireless remote control and a compact control panel. The keypad connected with signal cable can be installed remote from control unit.
Dimensions:
Control unit: 265 x 105 x 40 mm
Keypad: +/- 70 x 50 x 10 mm
Length of signal/power cable motors: 2 m
Electrical installation:
The drives and the wiring must be installed by a certified installer
Operation for a hatch with double lids
Depending on the access door type, the weight of the cover and the application, we can install one or more gear rack drives. These drives are available in 24 Vdc or 230 Vac.
Operation and control 230Vac
This is the simplest system with 1 motor. It can be operated with an integrated or surface-mounted switch, not included.
Operation and control 24Vdc
Operation of one or more drives is controlled by a control box with rectifier that is connected to the electricity network.
Features
- Communication with central alarm system, possibly combined with emergency switch
- Programmable
- Operation control of other objects
- Control by automatic detectors - smoke, rain, wind, fire etc.
- Automatic sequence control of two covers that are overlapping
- Automatic stop in case of unequal load or overload
- etc.
Depending on the features we will recommend a suitable control box type.
Emergency hatches and doors:
It is of life importance that an emergency door opens after a break down of the electrical system. For those reasons a control box can be provided with a built-in emergency power pack.
Electrical installation:
The drives and the wiring must be installed by a certified installer.
Downloads
Documentation:
Roof hatch RHT brochure2.71 MB
Technical Data Sheet - Roof Hatches RHT / RHTEI / RHTX154.82 KB
Technical Data Sheet - Reset / Calibration GT35 / GT50202.93 KB
Manuals:
User information roof hatches2.30 MB
User information fixed stairs1.54 MB
Drawings:
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Watch the Revit instruction video
Installation roof hatch on concrete upstand42.61 KB
Installation roof hatch on concrete or steel roof45.29 KB
Installation roof hatch on concrete roof41.13 KB
Installation roof hatch on concrete roof insulated53.77 KB
Certificates:
Declaration of performance CE roof hatch RHT44.71 KB
KOMO Certificate: Roof hatch RHT120.07 KB
TÜV NORD Certificate: Roof hatch with ladder, scissor stairs and fixed stairs413.16 KB
TÜV NORD Certificate: GS55241.19 KB
EuroSolid Report: Thermal performance Roof hatch RHT525.05 KB
Peutz Report: Sound insulation roof hatch RHT1.14 MB
Quote
Gorter roof hatches with fixed stairs provide practical and safe access to flat roofs for maintenance work, to a rooftop terrace, roof garden or solar collectors and other facilities on the roof. Roof hatches can be installed on flat roofs with a maximum slope of 30°.
Roof access available immediately
Roof hatches combined with a fixed stair are ideal for applications where the roof has to be accessed frequently or where access must be available at all times. The Gorter combination of roof hatch and GS55 fixed staircase offers a stylish and permanent solution for roof access with floor heights from 3,000 to 3,370 mm. The Gorter combination of RHT roof hatch and GS50 fixed staircase is suitable for floor heights from 2,500 to 3,000 mm.
New generation Gorter RHT roof hatch
The new generation RHT roof hatches feature an extremely strong and patented construction. Thanks to several modifications, the roof hatch is even more resistant against unexpected extreme loads, both during construction and in general use.
Improved features and functionalities of the indestructible and sustainable RHT roof hatch:
- Made and Designed in Holland
- New and improved, patented indestructible construction
- Trusted, with CE(ETA) certification
- Now available directly from stock in sizes up to 1000 x 3000 mm
- Fully standardised to metric dimensioning
Fully thermally broken
The Gorter RHT roof hatch has a fully thermally broken curb and cover, and a proven high insulation value of Uw ≤ 0.319 W/(m².K) This minimises the chance of condensation forming and guarantees energy cost savings.
Gorter RHT roof hatch with GS55 fixed staircase:
- Roof hatch is CE (ETA-15/338), TÜV NORD and Aboma certified with fully thermally broken curb and cover
- Automatic adjustment of treads for easy installation
- Tilt angle depending on floor height 55° - 65°
- Roof hatch safe operation with one hand
- Safe grip all the way to the roof
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10-year warranty on the roof hatch, 1 year on climbing devices
- Roof hatch with optional electric control
- High-quality aluminium construction of hatch and fixed stair
- Euro cylinder lock with indoor and outdoor operation
- Burglar- and sound-proof roof hatch
- Fast delivery
Read more about the advantages of Gorter roof hatches here
Maximum performance and ETA
Thermally insulated construction
Complete with ladder or stairs
