JM Passive Fire Protection specialise in the installation of passive fire protection products and air sealing including the following:
- Fire Doors
- Fire Compartmentation Surveys
- Thin film Intumescent Paint
- Cavity Barriers
- Fire Stopping
- Fire Boarding
- Fire rated/insulated soffits
- Insulation details
- Acoustic sealing
- Air /integrity room testing
We offer a full take off service and will schedule all estimates within a bill of quantities to give a fully transparent priced job.
Structural Steelwork Protection
Current regulations require certain elements of the building structure to have fire resistance. Fire resistance testing on structural steel members have shown, that by incorporating a proprietary fire protection system, the ability of the structure to resist fire will be greatly enhanced dependent upon the particular system chosen.
Boarded Fire Protection Systems
Materials we use
- Glasroc F board encasement
- Beam Clad
- Fire line board
Boarded fire protection systems offer a non-combustible and cost efficient method of providing up to 240 minutes fire protection to structural steelwork. As the original means of affording structural fire protection, this method has seen major developments in the types of boards available today.Boarded fire protection systems can be durable, resistant to water and beneficial to acoustic performance. Certain fire boarded systems are able to accept decorative applications, such as paint or plaster, providing an aesthetic finish without the need for further preparation.
Intumescent Paint Systems
Thin film applied Intumescent paint is a fast method of providing up to 120 minutes fire protection to structural steelwork. Intumescent coatings provide an appearance similar to that of paint, with basic to high gloss finishes now available. At ambient temperatures Intumescent paint systems remains stable. However in a fire condition, the increase in temperature activates a chemical reaction which then causes the intumescent coating to expand many times its original thickness.
This expansion provides an insulating foam-like coating or "char". It is this "char" that provides the fire protection to the steel work which, in some instances, can be up to 50 times its initial applied thickness. Therefore, secondary casings applied to the steel members must allow for expansion to ensure the intumescent paint system performs correctly.
Fire Compartmentation Systems
The spread of fire can be restricted by sub-dividing buildings into a number of discrete compartments. These fire compartments are separated from one another by compartment walls and compartment floors made of a fire-resisting construction which hinders the spread of fire.
Approved document J, Combustion appliances and fuel storage systems, defines a fire compartment as:
A building or part of a building comprising one or more rooms, spaces or storeys constructed to prevent the spread of fire to or from another part of the same building or an adjoining building. (A roof-space above the top storey of a fire compartment is included in that fire compartment.) A separated part of a building is a form of compartmentation in which part of a building is separated from another part of the same building by a compartment wall. Such walls run the full height of the part and are in one vertical plane.
Fire compartmentation/Fire stopping:
- Prevents the rapid spread of fire which could trap the occupants of a building.
- Reduces the chance of fires growing and creating a danger to occupants, fire and rescue services, and people in the vicinity of the building.
- Limits the damage caused to a building and its contents.
The degree of sub-division that should be provided by fire compartmentation will be dependent on:
- The use of the building.
- The fireload in the building.
- The height of the building.
- The availability of a sprinkler system.
Fire Compartmentation Survey
The purpose of a fire compartmentation survey is to visually inspect all compartment walls and floors including within services risers, both above ceilings and beneath raised floors (where existing) and along corridors in the areas of the building identified on the fire strategy drawings and report on their current condition. We will then assess the integrity of all fire-resistant elements in line with the criteria provided by the client. A written report is then produced which will include representative photographs, advising on typical instances of non-compliance and areas of any special consideration. The report will include an itemised schedule numerically coded to the marked-up drawings indicating each item of non-compliance with an accompanying photograph where possible. All of our surveys are recorded electronically on our Bolster system for accurate identification and recording of all areas.
Buildings are compartmentalised to delay the spread of fire from one area to another. These compartments are usually linked by fire doors to allow the flow of traffic around the building. Fire doors have two important functions in a fire; when closed they form a barrier to shop the spread of fire and when opened they provide a means of escape.
A well designed timber fire door will delay the spread of fire and smoke without causing too much hindrance to the movement of people and goods.
Every fire door is therefore required to act as a barrier to passage of smoke and/or fire to varying degrees depending upon its location in a building and the fire hazards associated with that building.