Kitchen Extract & Ductwork Cleaning

The main fire risk in buildings with catering facilities comes from the accumulation of grease-laden deposits in extract ventilation and ductwork systems. The extraction ductwork often stretches through the entire length of a building reaching to a roof level exhaust, so uncleaned ductwork and extraction systems can put not only the occupants at risk from fire but also the whole premises. Enviroduct Cleaning can help to reduce this risk by providing regular preventative maintenance cleaning programmes which can include kitchen extract cleaning, ductwork cleaning, fire & smoke damper testing and ventilation system maintenance.

The filters in the kitchen extraction system act as the first line of defence against grease deposits, but smaller particles manage to pass into the extract ductwork system. These grease deposits accumulate over time, which can create a hygiene and/or fire related risk. The ductwork section of the extract ventilation system is often hidden, hard to reach and requires specialist cleaning.

The Enviroduct cleaners are specialists in all aspects of kitchen ventilation, extraction and ductwork cleaning and maintenance services. We work with various types of clients from bars and restaurants to large catering facilities and hotel chains, ensuring that their extraction and ductwork systems are cleaned to the highest standards.

The Fire Safety Order requires owners and managers of buildings to ensure the Grease Extract Ventilation System is included in the Fire Risk Assessment and action taken to eliminate any potential risk to building occupants from potentially fire hazardous grease deposits in the ducting.

Kitchen Extract & Ductwork Cleaning

Frequency of Cleaning

Section 7 of TR/19 (Specific Considerations for Kitchen Extract Systems) provides specific guidance on how often systems should be cleaned. Please see table below. Section 7.35 The need for specialist cleaning of extract systems will depend on the level of usage of the cooking equipment, types and quantity of cooking and other risk factors such as vulnerability of the system to ignition and of the building and its occupants/users to system fire, hygiene, vermin and mechanical hazards. Typical cleaning intervals are shown to the right.

The canopy and canopy/extract plenum is an area of higher fire risk and consideration should be given to more frequent cleaning in accordance with insurers’ requirements, at Enviro Duct Cleaning we can carry out service contracts on filters, canopies & plenums to ensure compliance.

Heavy Use

12-16 hours per day 3 monthly.

Moderate Use

6-12 hours per day 6 monthly.

Light Use

2-6 hours per 12 monthly.


We’re confident that our services can help companies to the highest standards in regards to complying with insurance certificates. We offer a free, no obligation fire risk assessments on the ducting and extraction cleaning.
Duct cleaning offers businesses a number of beneficial features, including:
• Prolonged life of equipment
• Reduced escalation of energy costs
• Fire safety
• Reducing humidity, overheating and noxious fumes
Not surprisingly, there are strict regulations governing duct work cleaning and maintenance. Workplace Health & Safety regulations require building managers to ensure a good supply of clean air into the building, and to ensure that ventilation duct work cleaning, inspection and maintenance are carried out on a regular basis.
Cooking in commercial kitchens generates airborne grease, carbon and steam, which can condense on the inner walls of kitchen ventilation duct work. If regular cleaning of the ventilation system is not performed these deposits build up, reducing airflow, creating foul odours and creating a significant fire hazard.
Proper records must be kept, including photographic evidence. Building owners or managers who fail to ensure adequate Duct Work Cleaning face prosecution under these regulations and may result in insurance policies becoming null & void.

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