This is the latest in the of Automist® range of active fire safety products that reinvent water mist technology for a residential setting.







Automist® Fixed Wall Head is an LABC Registered Solution (EW171) for loft conversions & open plan layouts.







Automist® Personal Protection System (PPS) is an independently tested plug and play portable fire sprinkler.




The affordable domestic fire sprinkler alternative



Automist Installer - National Automist Installer

Welcome to 3d Fire Defence Ltd.

Perhaps you are a homeowner looking for peace of mind from kitchen fires, a fire inspector trying to prevent the risk of flashover on an escape route, a designer or builder looking to open up a space or even a landlord looking to safeguard your tenants? Automist is changing the way people think about domestic fire protection.
Intended as a more affordable and attractive alternative to sprinklers, Automist is a fire protection which provides developers and home owners with design freedom and flexibility for open plan spaces, in new builds, refurbishments or loft conversions.

It has been extensively tested by BRE and is an LABC Registered Solution (RD171) for loft conversions, bringing active fire protection to homes where previously it was cumbersome or impractical.
Automist also offers the ease of being able to retrofit for whole-room protection.  Put simply, it is a water-mist device which is automatically and reliably triggered by a standard heat alarm to provide life and property protection.


James Dyson said of the device, after it won the James Dyson Award in 2009. This simple but clever device should become a permanent safety feature in the home. Smoke alarms are an essential part of modern life but have remained fundamentally unchanged for forty years. Automist not only detects a fire but can put it out as well."




Automist is an innovative product designed to help compliance with building fire regulations, particularly in open plan layouts. Such products are permitted under Building Regulations as long as they have been tested and shown to be fit for purpose. A similar framework of requirements exists for the Fire Safety Order and the Housing Act. Automist's testing was conducted by BRE and is framed around demonstrating a survivable set of conditions in the room of origin of the fire by minimising toxic gas / low oxygen / heat exposure..
Automist is triggered by an industry standard 57°C heat alarm. Heat alarms can either be mains or battery powered and must have a relay output either via a wireless or wired connection. The relay should include Normally Open, Normally Closed and Common terminals. Alarm panels may be used provided that they offer a suitable relay output.
A correctly installed heat alarm will reliably trigger Automist and should supplement household existing smoke alarms which can provide an additional warning of fire. Heat alarms give an audible warning when the temperature at the alarm reaches 57°C and, unlike conventional smoke alarms, will not be triggered by burning the toast, steam from cooking, or a car's exhaust fumes.
When water is driven through a specialised nozzle at very high pressures (in Automist's case around 90 bar), the water is atomised to produce a fine mist or fog. Water mist removes heat from the fire and displaces oxygen from the fire zone, resulting in fire control, suppression or extinguishment. The intention is to reduce the oxygen concentration around the flame, lower the temperature and lessen the radiative heat to such an extent that combustion can be longer be maintained, thus reducing damage and maintaining survivable conditions.
High-pressure water mist has proven itself highly effective in protecting deep fat fryers for many years, and is regarded as a very clean way to address the problem. Traditional thinking says that you do not use water to extinguish an oil fire, because bulk water sinks below the oil and boils, ejecting burning oil into the room. The very fine droplets produced by Automist are small enough to be carried by thermal air currents, however. Rather than sinking below the oil, they are drawn into the flame where they suppress the fire.


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