When staff at National Oilwell Varco were unable to build tall manifold assemblies due to the restricted height of their Dunfermline factory, they turned to Surespan for help. Opening up the roof on a temporary basis was the solution.
Scotland, Varco National Oil Well
Following consultations with our design team, Surespan manufactured a 4000 x 4300mm double leaf roof hatch which enabled an external crane to lift the manifold units in through the roof. The electrically operated hatch opens in an automated sequence, controlled by a small PLC and activated by the turn of a key. It was specially designed to open and stay open utilising strut locking to withstand agreed wind conditions.
This solution allowed the company to continue this operation in their existing factory without having to hire temporary premises.
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.
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.
Walk On Glass Floor Hatch
Surespan PaveVent Walk On Glass Floor Hatch, glazed pavement lights and walk on rooflights are designed with a pan type lid and structural bond system which provides a slim sightline as standard.
Standard system performance will cope with light maintenance loads right up to heavy pedestrian.
Surespan Walk On Glass Floor Hatch, glazed pavement lights and non-opening PaveVents are manufactured from 304 grade stainless steel. With walk-on-glass. TripleLite 34mm thick glass to suit pedestrian loading only, 1.4 kN concentrated and 1.5 kN m2 UDL and a U value of 5.4 w/m2k. The frame is ventilated to suit your free air requirements using stainless micro mesh filters.