Roof Mounted Equipment

The presence and securement of roof mounted equipment will obviously contribute to storm damage. This can include small equipment such as exhaust fans, air intakes and stacks; as well as large equipment such as cooling towers, chillers and tanks.

Equipment mounted on the extremity of your building (commonly the roof) is obviously more vulnerable to storm and wind damage, and needs to be well-maintained, strapped down and periodically inspected.

Negative Positive
Inadequately secured roof mounted equipment based upon visual observation. No roof mounted equipment.
Large roof mounted equipment held in place by gravity (no connections to building). Small roof mounted equipment well secured.
Lightning protection systems secured to the building with adhesives rather than fasteners. Large roof mounted equipment with engineered connection to the building structure.
Significant external storage of products that could present significant projectile damage to own or third party property. Emergency plans include checking the integrity of external equipment anchoring and removing unsecured equipment indoors temporarily.
  Periodic inspection and maintenance of external equipment considers anchor points integrity.

  • For small roof mounted equipment (e.g. exhaust fans and exhaust stacks) where engineered connections are not provided, install corrosion resistant fasteners (e.g. stainless steel or hot dipped galvanized screws) not exceeding 15 cm (6 in) on centres between the equipment, transition pieces and the supporting equipment curb or stand.
  • For large equipment (e.g. HVAC units, cooling towers and dust collectors) provide engineered connections between the equipment and the building structure.
  • For new construction, provide enclosed rooftop penthouses to protect roof mounted equipment.
  • Avoid routing ductwork to the exposed outside on rooftops.