Clearance under Equipment

Mechanical equipment installed above a roof should have adequate clearance to allow roofing to be installed, maintained and replaced.

Image 2 shows an installation where the roof with sleepers was completed before the AHU was set in place. Access for maintenance cannot be done without removing the unit.

The EPDM roof shown at Image 3 needs to be replaced but there is adequate clearance to work under the equipment.

When a duct was added to an existing roof adequate clearance was left to allow future roof repair and roof replacement - see Image 4.

The support base shown at Image 5 does not allow initial or future inspection of the seal of roof membrane up under the flat plate.