Roof Exhaust Fans

A roof ventilator exhausts air, fumes, vapours, heat, or contaminants from an industrial building or process area through the roof. Roof-mounted fans can support chemical ventilation, fume extraction, dust collection, and corrosive gas handling. The correct configuration helps move contaminated air away from occupied spaces while integrating with ductwork and the facility’s overall ventilation system.

IPF Colasit offers in-line and roof-mounted plastic blowers, including CRDV configurations, as well as FRP axial fans with duct-mount and roof-mount styles. PVC, polypropylene, spark-resistant PPs-EL, and FRP construction options are available across the product range. Drive options can include direct drive, belt drive, and in-line or roof-mounted arrangements, depending on the product.

Available construction materials include PVC, polypropylene, spark-resistant PPs-EL, and fiberglass reinforced plastic. Material selection should reflect the chemical composition, temperature, static-control requirements, and operating environment of the exhaust stream. Polypropylene is used for resistance to acid and caustic attack, while PVC and FRP provide alternatives for chemistries and temperatures outside polypropylene’s suitable range.

Yes. IPF Colasit roof exhaust fans are designed for applications including chemical processing, corrosive gas ventilation, wastewater treatment, and air pollution control scrubbers. Thermoplastic and FRP construction helps address corrosive air streams without relying solely on a coating. The appropriate material and configuration should be selected against the specific chemistry, temperature, airflow, and installation conditions.

Spark-resistant options are available through PPs-EL material and selected FRP designs with graphite impregnation for static dissipation. Explosion-proof motor options are also available for applicable configurations. Selection should be reviewed against the facility’s hazard assessment, exhaust chemistry, electrical requirements, and installation standards. IPF Colasit can provide product-selection guidance for spark-sensitive or potentially explosive-atmosphere applications.

Start by documenting the required airflow, static pressure, exhaust chemistry, operating temperature, contaminants, mounting position, duct arrangement, and electrical requirements. Also identify whether corrosion resistance, static dissipation, or an explosion-proof motor is needed. IPF Colasit’s range includes plastic blowers and FRP axial fans with different materials, drive options, and roof or duct mounting arrangements.