Surespan has supplied 140 degree opening hatch doors for the Kielder Observatory, the UK’s latest astronomical facility in the north of England.
Bespoke Double Leaf Hatches
Charles Barclay Architects commissioned Surespan to design and build two sets of hatch doors for the roof and the front of the Observatory’s two rotating turrets – one to house a 20” Pulsar manual telescope and the other for a small Mead 14” telescope. Electrically operated using a remote control via 24v dc actuators, the hatch doors are specially designed to open in a specific sequence.
Double Leaf Roof Hatch
The SRH/DL Double leaf roof hatch is manufactured in aluminium. They can be provided with an polyester powder coated dual finish upon request. Each standard roof hatch is Insulated to maintain the thermal integrity of the building.
The gas spring assisted opening lid is supported by heavy-duty aluminium hinges. This also features an integral ‘wrap over’ edge. The hatch incorporates double unbroken EPDM seals. The upstand has a purpose made flashing to accept the roof felt for weatherproofing purposes. Moreover, the hatch incorporates a safety hold open stay feature to prevent accidental closure. Various locking options are available.
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.
SRHP 50 Roof Access Hatch with Thermal Break
Surespan’s Aluminium Roof Access Hatches feature an unprecedented 25/50/75mm wide thermal break to provide the ultimate in thermal performance.
Insulation options include polyisocyanurate board or non-combustible mineral wool, to achieve a variety performance levels to suit project requirements.
Designed with options for manual gas spring assistance, featuring aluminium continuous hinges and an automatic hold-open safety stay to lock the lid in the open position to a 85° span.
For larger, heavier lids, consideration is to be given for powered assistance by 24v DC actuators, to ensure ease and safety of use is afforded to the operative.
A double unbroken EPDM seal ensures weather tightness, with an External Liner fitted as standard to allow for a variety of hot or cold applied weathering materials.
Available with a polyester powder coated dual finish upon request.
Set standard sizes are available from stock, with bespoke sizes made to suit project needs.