Fire stopping – Passive fire protection
As the name suggests, Passive Fire Protection is one element of fire safety. It includes fire doors, intumescent pipe wrap and collars, down light covers, fire hoods/canopies as well as intumescent socket box/covers amongst others.
Fire stopping in buildings is about preventing the spread of the fire and smoke, the system uses compartmentalised fire rated walls and floors. Fire stopping slows the spread of fire allowing people to evacuate safely and with more time to do so. It can slow the fire for up to 240minutes.
Fire stopping systems seal around ducts,pipes, cable trays and movement joints, to ensure there is integrity within all of the compartments.Passive fire protection is required in commercial and domestic environments.
Openings where Fire stopping is concerned;
-electrical through-penetrations, -mechanical through-penetrations, -structural through-penetrations, -un-penetrated openings, -re-entries of existing fire stops, -control or sway joints (within fire-resistance wall or floor assembly), -junctions between fire retardant rated floor or wall assembly, -head of wall joints (non-load bearing wall assemblies that meet floor assembly)
Fire doors-should be fitted with intumescent fire and smoke seals, around the edges of the door leaf or frame. They help with not only with the spread of fire but also with the cold smoke (in the early stage of the fire). Smoke is a silent killer.
Hot gases can move un-detected through a building, this could be via the air conditioning system. Intumescent air transfer grilles (rated 30-60min fire rating) swell during a fire situation to restrict the passage of hot gases.
Intumescent pipe wrap/collars are designed to expand in a fire, as the plastic pipes pass through masonry floors and walls. The expansion is inward, therefore squeezing the pipe until is completely sealed.
Intumescent downlight covers and fire hoods/canaries are used for recessed light fittings. They prevent fire from penetrating the void from the ceiling and preserve its integrity. (Typically 30-60 min rating)
Intumescent socket box inserts and covers are designed to expand to fill the electrical box in a fire, helping to prevent the spread of gases,smoke and fire.
Hilti has innovative software to support our projects. We keep detailed records of the fire stopping and the associated document management.
It is cloud based, it tracks all paperwork and documentation during the build and install of PFP. It keeps detailed records of what is where. Photos can be uploaded. This all helps create full project reports including who installed what and how.
Fire stopping should always be managed by qualified and accredited professionals. We are the only certified fire stopping company within Cornwall. Please do not hesitate to get in touch to discuss your requirements in more detail, we are happy to help.