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Gorter® Flat Roof Access Hatch RHT with Scissor Stairs

Gorter® Flat Roof Access Hatch RHT with Scissor Stairs

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Gorter roof hatches with scissor stairs provide practical and safe access to flat roofs for maintenance work or other purposes. The roof hatch can be installed on flat roofs with a maximum pitch of 30°.

Access to the roof
The Gorter combination of roof hatch and scissor stair provides generous access to the roof and is available for ceiling heights of max. 3,000 or 3,500 mm.

S+ type: max. ceiling height 3,000 mm
Large and XL type:
max. ceiling height 3,000 mm
Large H and XL-H type:
max. ceiling height 3,500 mm

Scissor stair ensures free space under the roof hatch
Roof hatches combined with a scissor stair are ideal for applications where occasional but also frequent access to the roof is required. When the scissor stair is folded, you always have free space under the hatch.

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 scissor stair:

  • Roof hatch is CE (ETA-15/338), TÜV NORD and Aboma certified with fully thermally broken curb and cover
  • Scissor stair with Aboma and TÜV NORD quality mark
  • 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 and scissor stair with optional electric control
  • High-quality aluminium construction of roof hatch and scissor stair
  • Euro cylinder lock with indoor and outdoor operation
  • Burglar- and sound-proof roof hatch
  • Fast delivery

Scissor stair extension for plenum
The S+ scissor stair is not suitable for use as an extension of scissor stair to bridge a plenum (= space between suspended ceiling and roof).

The Large and Large H scissor stair can be used with an extension of scissor stair to bridge a plenum (= space between suspended ceiling and roof).

The type XL scissor stair can be used with an extension of scissor stair to bridge a plenum (= space between suspended ceiling and roof).

Specification
  • Certifications:
    CE ETA-15/0338
    Aboma certificate
    TÜV NORD certified according to EN 14975:2010, with label ''Baumuster geprüft"

    Roof hatch, type RHT7010
    Standard opening size: 700 x 1000 mm (Hinge side = long side)
    Weight: 56 kg

    Roof hatch, type RHT7014 
    Standard opening size: 700 x 1400 mm (Hinge side = long side)
    Weight: 68 kg

    Roof hatch, type RHT1015
    Standard opening size: 1000 x 1500 mm (Hinge side = long side)
    Weight: 84 kg

    Gorter® - completely assembled with:

    • Thermal separated and insulated construction
    • Counter balancing system for assisted opening and controlled closing
    • Diagonal hand rail to safely enter and leave roof hatch
    • Double sealing for water and weather tightness
    • Fully opened lid engages automatically, with release button
    • Stainless steel Eurocylinder lock, in- and outside 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 ≤ 0.32 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)

    Scissor stairs

    Casing:
    Type S+: For structural opening size (W x L x H): 700 x 1000 x 320 mm
    Type L:
    For structural opening size (w x L x H): 700 x 1200 x 250 mm
    Type XL:
    For structural opening size (W x L x H) 1000 x 1300 x 250 mm

    Stair:

    • Material: cast aluminium
    • Size steps: 350 x 140 x 26 mm, anti-skid
    • Step distance: ca. 250 mm, depending on ceiling height
    • Horizontal position of steps is adjustable

    Projection while opening:
    Max. 500 mm at ceiling height 3000 mm (type S+)
    Max. 700 mm at ceiling height 3000 mm (type Large)
    Max. 950 mm at ceiling height 3500 mm (type Large-H)

    Hardware:

    • Hook and eye
    • Handrail prepared for padlock to secure retracted stairs
    • Stair guide control system

    Extension of scissor stair in plenum (option):
    The stair can be extended to bridge the distance between ceiling and roof hatch in cases where it is mounted in a suspended ceiling / plenum

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

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