Twin Roof Hatches Gives Successful Safety Formula

Edited by the Buildingtalk editorial team Apr 1, 2003

What are thought to be the largest single leaf automatic roof hatches for building evacuation used in the UK have been designed and manufactured by Surespan Ltd.

Twin hatches have been produced, each with a nominal overall size of 2.5 metres x 6.5 metres in width.

These are being supplied for a prestigious build project, to be incorporated into a circular horizontal structure with different curvatures at the top and lower edges.

In addition the surface of the hatches also conform to a cone profile, all of which combines to make a highly complex geometry for construction.

The hatches are manufactured from aluminium throughout, with a polyester powder coated finish providing excellent weatherability and durability.

Each is insulated against heat loss and condensation to a U - value of 0.43 W/m2K to maintain the thermal integrity of the building.

They also provide good sound insulation and incorporate appropriate facilities for rainwater collection and drainage.

Each roof hatch opens to 80deg and is approached by individual stair risers to provide an adequate clear and unhindered exit route for all personnel in the event of an emergency evacuation of the building.

Surespan are specialists in the design of innovative hatch covers and are confident that they are probably the only company in this country capable of handling a job with this specification.

They are also able to supply a wide range of hatches for access or ventilation suitable for industrial, commercial and public buildings as well as products designed for subterranean access generally as found in service ducts and sewage plants etc.