TR19 Grease baseline clean and certificate
The first full TR19 Grease clean and survey of your extract system — canopy, filters, ductwork and fan — carried out to the BESA TR19 Grease standard before you open, which measures your baseline grease deposit rate and sets the ongoing cleaning frequency you follow afterwards.
The first full TR19 Grease clean and survey of your extract system — canopy, filters, ductwork and fan — carried out to the BESA TR19 Grease standard before you open, which measures your baseline grease deposit rate and sets the ongoing cleaning frequency you follow afterwards.
You cannot set a sensible ongoing cleaning schedule without a baseline survey, and insurers increasingly want evidence that your extract was clean and assessed before you started cooking through it.
Ask for a baseline survey with deposit thickness readings — this is what sets your ongoing cleaning frequency.
Who this is for
Any kitchen fitting a new mechanical extract canopy and ductwork, or taking on an existing system.
What you’ll hold
- TR19 Grease baseline certificate with deposit thickness readings
- Recommended cleaning frequency
Watch out for
- Skipping the baseline and defaulting straight to a "6-monthly" clean — without a measured baseline you do not actually know if that is the right frequency for your grease load.
- No access panels fitted in the duct run before the baseline clean, so the survey can only inspect part of the system.
- Losing the baseline certificate. Every future clean and your fire risk assessment reviews should reference it.
Sources
- BESA — TR19 Grease checked 2026-09-02
See also
- TR19 Grease kitchen extract clean— this becomes an ongoing job once you’re open →
- Prove the extract meets the gas interlock and planning conditions
- Get a recorded fire risk assessment
This is item 60 of 66 in the free UK Launch Checklist. See the whole list →