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Before and after comparison of a grease coated exhaust fan and hood interior next to the same components after cleaning

Fans and rooftop

Rooftop Grease Containment Cleaning

Cleaning grease boxes and containment around rooftop exhaust fans.

Rooftop grease containment collects grease that drains from the exhaust fan. When containment units fill up or are missing entirely, grease spreads across the roof, damaging membranes and creating a slick, flammable surface.

We clean the area around the fan curb and service accessible containment units during exhaust cleaning, and we note when containment is full, damaged, or absent.

What this service covers

  • Grease boxes and absorbent containment
  • Fan drain spouts
  • Curb and surrounding roof area

Common problems we address

  • Overflowing grease boxes
  • Stained or blistered roofing
  • Grease runoff toward drains

Safety and NFPA 96

For rooftop grease containment cleaning, NFPA 96 (the National Fire Protection Association standard for commercial cooking operations) is the usual reference for inspection, cleaning access, and documentation. The edition in force and how it is enforced depend on your local authority having jurisdiction. We clean thoroughly and document our work, but no contractor can guarantee an inspection result. Learn more about NFPA 96.

Benefits for your business

  • Protects the roof
  • Cleaner rooftop appearance
  • Lower rooftop fire load

Process

How we perform rooftop grease containment cleaning

  1. 01

    Pre-service walkthrough to confirm hood count, duct routing, fan type, and access points.

  2. 02

    Cooking equipment is covered or shielded and floors are protected with plastic sheeting.

  3. 03

    Grease filters are removed and soaked or degreased separately.

  4. 04

    Heavy deposits are hand scraped from the hood canopy, plenum, and accessible duct.

  5. 05

    Commercial degreaser is applied and allowed dwell time to break down hardened grease.

  6. 06

    Surfaces are rinsed with hot water pressure washing and wastewater is captured.

  7. 07

    The rooftop exhaust fan is cleaned, and accessible fan components are checked.

  8. 08

    Filters are reinstalled, the kitchen is wiped down, and the system is tested.

  9. 09

    Service documentation is provided, noting areas cleaned and any areas that could not be reached.

Photos

From our work

Technician in protective coveralls scraping grease from the inside of a commercial kitchen hood plenumStainless steel commercial kitchen hood with exposed exhaust ductwork running across the ceilingLong stainless steel exhaust hood above a commercial kitchen cooking line with fryers and ranges

FAQ

Rooftop Grease Containment Cleaning questions

Do you replace containment pads?+

Ask during your quote. Replacement depends on the containment type installed.

Serving all of Tennessee

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