Gorter® Flat Roof Access Hatch RHT with Stairs

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 RHT roof hatch and GS50 fixed staircase is suitable for floor heights from 2,500 to 3,000 mm. 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.

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 U_w ≤ 0.319 W/(m².K) This minimises the chance of condensation forming and guarantees energy cost savings.

Gorter RHT roof hatch with GS50 or GS55 fixed staircase:

Roof hatch is CE (ETA-15/338), TÜV NORD and Aboma certified with fully thermally broken curb and cover
Fixed stair with automatic adjustment of treads for easy installation
Tilt angle depending on floor height 50° - 66°
Roof hatch safe operation with one hand
Safe grip all the way to the roof
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

Specification

Certifications:
CE ETA-15/0338
Aboma certificate
Roof hatch type RHT1015
Standard opening size: 1000 x 1500 mm (Hinge side = long side)
Weight: 84 kg
Roof hatch type RHT1020
Standard opening: 1000 x 2000 mm (Hinge side = long side)
Weight: 101 kg
Roof hatch type RHT1025
Standard opening: 1000 x 2500 mm (Hinge side = long side)
Weight: 120 kg
Roof hatch type RHT1030
Standard opening size: 1000 x 3000 mm (Hinge side = long side)
Weight: 134 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): U_w ≤ 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 GS50
Gorter complete assembled. Aluminium, anodized.
Floor height: ........ mm
- Pitch adjustable from 50°- 66°
- Standard room height 2500 mm (50°) - 3000 mm (66°)
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
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

Technical specification

Unique ref.gorter-flat-roof-access-hatch-rht-with-stairs
Product familyRoof Hatch Standard
Product groupwith climbing equipment
TypeAssembly (multiple objects)
Date of publishing2023-12-22
Edition number1

Links

Product urlhttps://www.gortergroup.com/products/roof-hatches/rht/with-fixed-stairs/
Installation instructionshttps://www.gortergroup.com/images/documentation/roof_stairs/all_languages/gorter_manual_roof_hatches.pdf
Instruction videohttps://youtu.be/NMkVVxLkvjY?si=c5xyuz-IRCAj0E6c
Product certificationhttps://www.gortergroup.com/products/roof-hatches/rht/with-fixed-stairs/gs55/rht1025-with-gs55/#downloads
Technical descriptionhttps://www.gortergroup.com/products/roof-hatches/rht/with-fixed-stairs

Material mainMetal
Material secondaryInsulation
Designed inNetherlands
Manufactured inNetherlands

Classification

BIMobject CategoryConstruction - Access doors & panels
IFC classificationOpening Element
Uniclass 2015 CodeSs_30_30
Uniclass 2015 DescriptionRoof opening systems
CSI MasterFormat 2014 Code08 00 00
CSI MasterFormat 2014 TitleOpenings
OmniClass Number23-17 19 00
OmniClass TitleHardware for Openings

Region availability

Europe	Asia	North America	Africa	South America	Oceania
Åland Islands	Afghanistan	Anguilla	Algeria	Argentina	American Samoa
Albania	Armenia	Antigua and Barbuda	Angola	Bolivia	Australia
Andorra	Azerbaijan	Aruba	Benin	Brazil	Cook Islands
Austria	Bahrain	Barbados	Botswana	Chile	Federated States of Micronesia
Belarus	Bangladesh	Belize	Burkina Faso	Colombia	Fiji
Belgium	Bhutan	Bermuda	Burundi	Ecuador	French Polynesia
Bosnia and Herzegovina	British Indian Ocean Territory	British Virgin Islands	Cameroon	Falkland Islands (Islas Malvinas)	Guam
Bulgaria	Brunei	Canada	Cape Verde	French Guiana	Kiribati
Croatia	Cambodia	Caribbean Netherlands	Central African Republic	Guyana	Marshall Islands
Cyprus	China	Cayman Islands	Chad	Paraguay	Nauru
Czech Republic	Christmas Island	Collectivity of Saint Martin	Comoros	Peru	New Caledonia
Denmark	Cocos (Keeling) Islands	Costa Rica	Côte d'Ivoire	Suriname	New Zealand
Estonia	Georgia	Cuba	Democratic Republic of the Congo	Uruguay	Niue
Faroe Islands	Hong Kong	Curaçao	Djibouti	Venezuela	Norfolk Island
Finland	India	Dominica	Egypt		Northern Mariana Islands
France	Indonesia	Dominican Republic	Equatorial Guinea		Palau
Germany	Iran	El Salvador	Eritrea		Papua New Guinea
Gibraltar	Iraq	Greenland	Eswatini		Pitcairn Islands
Greece	Israel	Grenada	Ethiopia		Samoa
Guernsey	Japan	Guadeloupe	Gabon		Solomon Islands
Hungary	Jordan	Guatemala	Ghana		Timor-Leste
Iceland	Kazakhstan	Haiti	Guinea		Tokelau
Ireland	Kuwait	Honduras	Guinea-Bissau		Tonga
Isle of Man	Kyrgyzstan	Jamaica	Kenya		Tuvalu
Italy	Laos	Martinique	Lesotho		United States Minor Outlying Islands
Jersey	Lebanon	Mexico	Liberia		Vanuatu
Latvia	Macau	Montserrat	Libya		Wallis and Futuna
Liechtenstein	Malaysia	Nicaragua	Madagascar
Lithuania	Maldives	Panama	Malawi
Luxembourg	Mongolia	Puerto Rico	Mali
Malta	Myanmar (Burma)	Saint Kitts and Nevis	Mauritania
Moldova	Nepal	Saint Lucia	Mauritius
Monaco	North Korea	Saint Pierre and Miquelon	Mayotte
Montenegro	Oman	Saint Vincent and the Grenadines	Morocco
Netherlands	Pakistan	Saint-Barthélemy	Mozambique
North Macedonia	Palestine	Sint Maarten	Namibia
Norway	Philippines	The Bahamas	Niger
Poland	Qatar	Trinidad and Tobago	Nigeria
Portugal	Saudi Arabia	Turks and Caicos Islands	Republic of the Congo
Romania	Singapore	U.S. Virgin Islands	Reunion
Russia	South Korea	United States	Rwanda
San Marino	Sri Lanka		Saint Helena
Serbia	Syria		São Tomé and Príncipe
Slovakia	Taiwan		Senegal
Slovenia	Tajikistan		Seychelles
Spain	Thailand		Sierra Leone
Svalbard and Jan Mayen	Türkiye		Somalia
Sweden	Turkmenistan		South Africa
Switzerland	United Arab Emirates		South Sudan
Ukraine	Uzbekistan		Sudan
United Kingdom	Vietnam		Tanzania
Vatican City	Yemen		The Gambia
			Togo
			Tunisia
			Uganda
			Western Sahara
			Zambia
			Zimbabwe