TR19 Cleaning for Dark Kitchens and Ghost Kitchens: What You Need to Know

The dark kitchen model — also known as ghost kitchens, cloud kitchens, or virtual restaurants — has grown rapidly across the UK over the past five years. These delivery-only operations typically run multiple food brands from a single kitchen, operating at high intensity for 16 to 20 hours per day.

From a TR19 compliance perspective, this creates a specific challenge. Dark kitchens accumulate grease deposits faster than almost any other commercial kitchen type — yet many operators, particularly those new to the food service industry, are unaware of their TR19 obligations.

This guide explains what TR19 compliance means for dark kitchen operators, what the required cleaning frequency is, and what your insurer needs to see.

Why Dark Kitchens Are the Highest-Risk Kitchen Type

Dark kitchens present a unique combination of risk factors that place them at the top of the TR19 risk hierarchy:

Extended operating hours. Most dark kitchens operate from early afternoon through to the early hours of the morning — typically 14 to 20 hours per day, seven days per week. This is significantly more than a traditional restaurant, which might operate for 8 to 10 hours per day.

High-intensity cooking methods. Dark kitchens typically operate multiple food brands simultaneously, each with their own cooking requirements. Frying, grilling, and wok cooking are common — all of which produce high volumes of grease vapour.

Multiple brands, single extraction system. In a shared dark kitchen facility, multiple operators may share a single extraction system. This means the system is under continuous load from multiple cooking stations, accelerating grease deposit accumulation.

Rapid growth without compliance infrastructure. Many dark kitchen operators have entered the food service industry from a technology or logistics background, without the compliance knowledge that experienced caterers develop over time. TR19 obligations are sometimes overlooked until an insurer or enforcement authority raises the issue.

What BESA TR19 Requires for Dark Kitchens

BESA TR19 classifies dark kitchens as heavy-use kitchens — the highest risk category. For heavy-use kitchens, the required cleaning frequency is:

Every 3 months (quarterly) as a minimum

For dark kitchens operating 16 to 20 hours per day, seven days per week, the actual required frequency may be higher. Some very high-volume dark kitchen operations require cleaning every 6 to 8 weeks.

The only reliable way to determine the correct cleaning frequency for your specific operation is to have a site survey carried out by a TR19-qualified specialist. During the survey, the technician will assess the cooking methods used, the operating hours, and the current condition of the extraction system, and provide a written recommendation.

Insurance Implications for Dark Kitchen Operators

Commercial kitchen insurance for dark kitchen operations is a specialist area. Many standard commercial kitchen insurers are cautious about dark kitchen risks — particularly shared facilities — and the policy conditions around TR19 compliance tend to be more stringent than for traditional restaurants.

Key insurance considerations for dark kitchen operators:

Frequency requirements. Your insurer may require more frequent cleaning than the TR19 minimum. Some dark kitchen insurers specify quarterly cleaning as a minimum condition, with some requiring bi-monthly cleaning for very high-volume operations.

Shared facility documentation. If you operate in a shared dark kitchen facility, you need to be clear about who is responsible for the extraction system maintenance. The responsibility typically lies with the facility operator, but individual kitchen operators may need to verify that the facility is maintaining TR19 compliance and obtain copies of the compliance certificates.

Business interruption cover. Dark kitchens are entirely dependent on their ability to operate — there is no dine-in revenue to fall back on if the kitchen is closed. Business interruption cover is particularly important for dark kitchen operators, and maintaining TR19 compliance is essential to ensure this cover remains valid.

Our CII-qualified founder has experience with dark kitchen insurance arrangements and can advise on the specific compliance requirements for your operation.

Practical Compliance Steps for Dark Kitchen Operators

Step 1: Commission a site survey

Book a free site survey with a TR19-qualified specialist. The survey will establish the current condition of your extraction system, confirm the required cleaning frequency, and identify any access panel deficiencies that need to be addressed.

Step 2: Establish a cleaning programme

Based on the site survey, establish a regular cleaning programme at the required frequency. For most dark kitchen operations, this will be quarterly or more frequent.

Step 3: Review your insurance policy

Review your insurance policy to confirm the TR19 compliance conditions. If the policy requires a specific cleaning frequency or a specific format for the compliance certificate, ensure your cleaning programme meets these requirements.

Step 4: Keep your compliance certificates

Store your TR19 compliance certificates securely and provide copies to your insurance broker at renewal. If you operate in a shared facility, ensure you have copies of the facility-level compliance certificates as well as any certificates specific to your kitchen station.

Frequently Asked Questions

I operate in a shared dark kitchen facility. Who is responsible for TR19 compliance?

The responsibility for TR19 compliance typically lies with the facility operator — the company that owns or manages the shared kitchen space. However, individual kitchen operators should verify that the facility is maintaining TR19 compliance and obtain copies of the compliance certificates. Your insurance policy may require you to demonstrate that the extraction system serving your kitchen station is TR19 compliant.

How often does a dark kitchen extraction system need to be cleaned?

BESA TR19 requires heavy-use kitchens — including dark kitchens — to be cleaned every 3 months as a minimum. For dark kitchens operating 16 to 20 hours per day, the required frequency may be higher. A site survey will confirm the correct frequency for your specific operation.

Can I use the same TR19 certificate for multiple food brands operating from the same kitchen?

Yes. The TR19 certificate covers the extraction system, not the individual food brands. If multiple brands operate from the same kitchen station and share the same extraction system, a single TR19 certificate covers all of them.

What happens if my dark kitchen fails a fire safety inspection?

If a fire officer finds that the extraction system is non-compliant, they can issue an enforcement notice requiring the system to be cleaned within a specified period. In serious cases, they can issue a prohibition notice preventing the kitchen from operating until the work is completed. We offer an emergency response service and aim to attend within 24 to 48 hours.

BlueTick Extraction Hygiene provides TR19 kitchen extraction cleaning for dark kitchens and ghost kitchens across Peterborough, Cambridgeshire, Lincolnshire, and Northamptonshire. Call us on 07840 992 246 or request a free site survey.