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New poster: OSHA requirements for mechanical service and construction work on low-slope roofs

Photo: Mechanical Contractors Association of America

Rockville, MD — OSHA requirements for mechanical service and mechanical construction on low-slope roofs – and the differences between them – are the topic of a new poster from the Mechanical Contractors Association of America.

Mechanical service is covered under OSHA’s general industry standards (1910), while mechanical construction is covered under the agency’s construction standards (1926).

According to MCAA, OSHA’s position on mechanical service is that the work “does not meet the definition of ‘temporary and infrequent’ if the job task takes longer than it would to install or set up fall protection, and the task is performed more than once a month, once a year or when needed.”


On the poster, MCA says it’s “working to establish a reasonable interpretation of the standard.”

For mechanical construction, workers must use fall prevention systems or fall protection when working 6 feet or more above a lower level. No safe distance exists for a worker to perform tasks without fall protection on a low-slope roof in this situation. (One exception involving a 15-foot or longer warning line is detailed in the poster.)

MCAA represents around 2,600 companies involved in heating, ventilating and air conditioning; refrigeration; plumbing; piping; and mechanical service.

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