Roof Stairwell Access Door

Nystrom roof hatches provide safe and convenient access to commercial building roof areas using interior ladders and stairs.

Roof stairwell access door.

Nystrom s complete line of roof hatch and safety products meet building codes fire and life safety requirements. Stairs terminating at the level of a setback shall provide access to the setback roof areas except where the setback is less than 4 feet 1219 mm in width and 10 feet 3048 mm in length measured from the inside of the parapet wall. 1021 1 for the purposes of this chapter occupied roofs shall be provided with exits as required for stories. Ibc 2003 2006.

Access to setback roof areas may be through a door or window opening to the roof. Both the ibc and nfpa 101 seem to support the option of locking these doors on the roof side. Although the preference from a life safety standpoint would be to always allow free egress from the roof security concerns can sometimes drive the need to lock the door from the roof to the stairwell to prevent unauthorized access to the building. From a security standpoint the easiest way to handle roof access is to keep the roof access point locked inside the building going out which restricts access but enables one to enter the.

A type l roof hatch permits easier movement for maintenance personnel tools and equipment from a full size stairway. Bilco roof hatches provide safe and convenient access to roof areas by means of an interior ladder ship stair or service stair. Available in galvanized steel aluminum or stainless steel construction. Commercial building stairwell doors often are locked on the stair side to prevent unauthorized entry from the stairwells into tenant spaces.

A variety of special sizes are also available to provide an accessible way to install or remove large pieces of equipment from a building. For ultimate corrosion resistance and outstanding exterior durability nystrom provides powder coat finish. The term stairwell reentry refers to the code requirements which allow a building occupant to leave a stairwell during a fire emergency and find another exit. Type l roof hatch service stair access.

Doors which provide access from a building stairwell to the roof continue to raise questions about security and egress but a change to the 2018 edition of the international building code ibc and the international fire code ifc helps to establish the intent of these codes. All products feature engineered lift assistance for easy one hand operation.