A first for Surespan, these huge electrically operated sliding glazed roof hatches also provide free airflow of 7m² for smoke ventilation! These bespoke designs were part of a redevelopment on Great Portland Street in London.
London, UK – Great Portland Street – Glazed Sliding Smoke Vents
The covers were 4610 x 1955mm and featured an electrically driven opening motor. The covers provide 7m² free air flow (As it is sliding there are no obstructions to the ventilation) according to approved document B (fire safety) paragraph 5b diagram C.7. The glazing features laminated and heat strengthened low iron glass to L40.
A further fixed rooflight was also supplied to the size of 4935mm x 1955mm, the thermally broken multi-pane rooflight provides natural daylight.
AOV Rooflight Polycarbonate Dome Smoke Vents
The Surespan AOV Rooflight top smoke vent offer exemplary functional safety and reliability, fully CE marked. The Ventilator can be supplied with a triple glazed polycarbonate dome in clear or diffused variants, The unit has a 300mm high thermally broken aluminium upstand that is suitable for use with the majority of roofing membranes.
The unit can also be used to incorporate natural day to day ventilation in your project. The Units actuators are off set within the aperture and this allows the unit to also be used for maintenance access to the roof of your project.
The units can be supplied to your free vent area requirements in either a geometric or aerodynamic value.
Flat Glass Rooflights
Surespan Flat Glass Rooflights & Roof Skylights provide an uninterrupted view of the outside with edge to edge glass with a black ceramic print edge. The slim aluminium frame is powder coated Slate Grey (RAL 7015) and isolated internally for thermal performance.
Fixed Flat Glass Rooflights can be installed onto a builder’s upstand or preformed kerb or alternatively provided with a 160mm Insulated PVC upstand. The glass provides a Ug of 1.0 W/m²K.
Smoke Ventilation System
Surespan SRHE/AOV 140° Smoke Ventilation System can be made to any size up to 1800 x 3000mm. They are fully compliant with EN12101-2 and CE Marked. The thermally broken, Aluminium single leaf smoke ventilator is operated by 24v DC actuator(s) and features electro-magnetic locking.
The lid and upstand are filled with 50mm thick CFC and HCFC free Polyisocyanurate insulation. This offers a high level of thermal insulation against heat loss and condensation, together with excellent sound absorption properties.
Smoke Ventilation System can be supplied with an offset mechanism for roof access as well as concealed actuators.
All of our smoke ventilators are manufactured to meet the requirements of Building Regulations, Approved Document B, BS9999 and EN12101-2 and are supplied CE marked.
SRHG Glazed Roof Access Hatch
Surespan SRHG Glazed Roof Access Hatches are manufactured using thermally broken extruded sections as standard, offering clients excellent energy conservation properties and substantially reducing internal condensation or frost formation.
Surespan glazed roof access hatches incorporate a frameless design eliminating water ponding. The low profile frame with triple seals is structurally bonded to the 35.5mm sealed double glazed unit will comprise Pilkington 6mm toughened K polished all round outer pane, 20mm Warm Edge silver spacer Bar argon filled, Pilkington 9.5mm toughened & laminated inner pane.
Note: We recommend all glazed hatches to be installed on a 5° pitch to stop water ponding.