The Gorter RHT standard roof hatch with ladder is suitable for installation on flat roofs with a maximum slope of 30° and can be used in a wide range of buildings, including offices, factories, apartment buildings, villas, shopping malls, hotels and public-sector facilities. It provides a safe and compliant solution for roof access and emergency escape, enabling routine maintenance, inspections, servicing of rooftop installations, roof terrace access and emergency egress.

Typical applications include:

• Access for inspection and maintenance of solar panel systems
• Rooftop access for HVAC equipment and technical installations
• Access to telecommunications equipment and antenna systems
• Personnel access for roof and building envelope maintenance
• Access to roof terraces, green roofs and amenity spaces

Extension ladder

Depending on the floor height, the Gorter combination of roof hatch and ladder is available with a single, double or triple extension ladder. The Gorter ladder is supplied as standard with suspension brackets for safe storage when the ladder is not in use. This combination is ideal for infrequent use of the roof hatch. For more frequent use, we recommend a roof hatch with scissor stairs or fixed staircase.

Alternative roof hatches

The RHT roof hatch is also available in bespoke sizes with a single lid or double lid. For projects with specific requirements or demanding environments, Gorter also offers roof hatches with extreme insulation values, glazed roof hatches and fire-rated roof hatches.

The Gorter RHT roof hatch with ladder has been installed in a wide variety of projects worldwide. Click here for reference projects in the UK.

The new generation RHT roof hatches with ladder 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.

Proven insulation performance of the complete roof hatch

With the RHT roof hatch, the insulation value is calculated for the entire construction (Uw), not just the insulation material. This sets Gorter apart in the roof hatch market, where many suppliers only provide the PIR insulation value. The proven insulation performance of the complete hatch is Uw ≤ 0.276 W/(m²·K).

Why choose a Gorter roof hatch?

• CE (ETA-15/0338) and TÜV NORD certified
• Fully thermally broken curb and cover
• Safe to operate with one hand
• 10-year warranty on the roof hatch
• Fast delivery
• High-quality construction
• Stainless steel Euro cylinder lock with indoor and outdoor operation
• Burglar- and sound-proof

Option: electrical operation

Performance according to CE (ETA-15/0338):

Resistance to permanent loads (Eurocode EN 1993-1-1): 1050 kg/m²

Insulating (EN-ISO10077-2): Uw ≤ 0.276 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

Safety Ladder Gorter

Type EL- single and OL - double or triple, depending on height - max 7395 mm.

• Ladder supplied in powder-coated aluminium.
• Two hooks on top to be hooked over a fixed step to safely enter and leave roof hatch. Hooks can be locked (padlock by others) to prevent ladder from misuse.
• Ladder can be stored in the 2 wall suspension brackets, 1 with padlock hasps (padlock by others).
• Step to be fixed (by others) into roof opening near access side

Standaard sizes: from 700 x 1000 mm up to 1000 x 3000 mm

Learn more about the Gorter standard roof hatch with ladder.