Spraying materials is used widely in the ceilings industry. From the spraying of direct to steel fireproofing, the spraying of stucco and exterior finish coats, to the spraying of paint materials inside, the wall and ceiling contractor uses a variety of highly efficient spraying equipment.

Fireproofing materials are used mainly to protect metal surfaces from the heat of fire in non-combusitable construction. For information about codes n non-combustible construction and requirements for fireproofing materials, we suggest futher reading may be found in the model building codes documents of BOCA, SBCCI and ICBO, and in the WCO Virtual Library.

Metal surfaces are protected from fire because heat can weaken the strength of metal members, and decking. If a fire is hot enough and lasts long enough it can soften the metal members to such an extent that the steel looses its support strength. Imagine the supporting members in a high-rise building softening to the point that the building collapses.

To combat fireproofing comes in several very distinct varieties. The types that are typically sprayed are known as cementitious and non-cementitous.

Cementitious fireproofing materials are mixed with waster at the pump and are pumped wet through the hose. They are applied by a nozzle at the end of the hose.

Non-cementitious fireproofing materials are blown through a hose dry and water is applied at the nozzle that wets a binder that makes the fiberous material sticky and causes it to adhere to the member being fireproofed.