Sliding Rooflight

For Tall Buildings and High Wind Situations

Surespan roof sliding glass roof lights provide many advantages over standard roof access hatches. The sliding access hatch is ideal where there is a height restrictions or in areas with high risk of wind. They are also ideal for access to roof terraces via a staircase.

Surespan sliding covers are manufactured with a thermally broken lid and upstand as standard. The sliding mechanism can be sold with fixed rails or internal telescopic rails.

The lid is filled with 2″ of CFC and HCFC free insulation with a U-value of 0.43 W/m²K. Surespan can also provide custom solutions such as our glazed sliding hatch over a fixed roof window.

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    • Thermally Broken Lid and Upstand
    • Insulation U-Value 0.43 W/m2K
    • Fixed Rails or telescopic rails
    • Custom made to any size
    • Fully insulated and energy efficient
    • Secure rigid aluminum weather tight cover
    • ODP (Ozone Depletion Potential) of 0
    • GWP (Global Warming Potential) of 3

    Fixed Rails

    Fixed Rail Sliding Roof Hatch

    Telescopic Rails

    Insulation Options

    Insulation U-Value Achieved
    2″ Standard insulation 0.43 W/m²K
    2″ Premium insulation 0.37 W/m²K
    2″Superior insulation 0.20 W/m²K

    Calculated to BS EN ISO 6946: 2007

    Thermally Broken Sliding Hatch

    Supplied to California State University. This large solid top electric sliding hatch with thermal break travels its length on tracks fixed to the roof.


    Supplied to Qatar for the Car Building Extension Works Project. This large solid top electric sliding hatch travels its length on tracks fixed to the roof.


    Surespan supplied an electric 4610 x 1955 glazed sliding smoke vent for Great Portland Street in London. The large cover provided a 7m² free air flow.


    Supplied to Gartsherrie Engineering Ltd. in Scotland. This biomass sliding cover features fixed external rails and electric operation. A further two sliding covers were supplied in smaller sizes.


    Telescopic sliding covers are ideal for small sizes that only need access for maintenance personnel or end users. These are produced in sizes up to 750 x 2500. Perfect for manual opening, the sliding cover easily and smoothly opens to provide large clear opening for easy access.

    Fixed Rail

    Fixed rails are used for larger sizes up to 3m x 3m. We can also produce larger sizes on request. The fixed rails provide a large clear area ideal for equipment, tools and personnel access. The external rail is fixed down onto the roof and provides structural support for the lid.


    Sliding roof hatches can be sold with a glazed lid which provides good ammount of daylight for users below. They also consist a talking point in modern architecture.

    Sliding roof hatch - examples

    Thermally Broken Roof Hatch

    All Surespan SRH/DL Roof Hatches include thermally broken extruded sections. Hence the excellent energy conservation properties and substantially reduced internal condensation and frost formation.

    In addition this reduces thermal conductivity and consequently the heat loss.

    Same technology is used in manufacture of Surespan’s Roof Hatches.

    Sliding hatch with telescopic runners