If you've been comparing extract-cleaning quotes around Swansea, you may have seen both "TR19" and "NAAD21" quoted. They're partners, not rivals.
TR19 in brief
TR19, from BESA, is the established UK reference for managing grease-related fire risk in kitchen extract systems — the one most Swansea insurers cite. Our TR19 guide covers it in full.
NAAD21 in brief
NAAD21 (currently NAAD-21:2025) comes from NAADUK, the National Association of Air Duct Specialists. It covers similar territory with a slightly wider remit — grease in kitchen extract systems plus broader ventilation air quality — and adds detail on how grease is measured and evidenced.
So which do you need?
The strongest position is documentation that references both. They overlap heavily, and a clean carried out to TR19 with NAAD21-style measurement and photographic evidence gives the most robust record for insurance, fire-risk and environmental-health purposes. Arrange a clean through us and your paperwork is built to satisfy what your insurer asks for — request a free quote.
Frequently Asked Questions
Does NAAD21 replace TR19?
No — they complement each other. Records that reference both give you the strongest compliance position.
Which standard do insurers prefer?
Most reference TR19, increasingly with NAAD21 alongside. A clean documented to both covers either request.