Commercial Spray Fireproofing

Enertek Contractors in Amarillo

Enertek Contractors has the ability to spray a full spectrum of spray fireproofing products which start with spraying a standard cementitious material or a portland based mineral fiber product and then finish with an industrial grade intumescent fireproofing product. We have helped develop and test new techniques with both material and equipment design and work tirelessly in association with our manufacturers to provide detailed feedback for future improvement.

Fireproofing

Spray Fireproofing, a passive fire protection measure, refers to the act of making materials or structures more resistant to fire, or to those materials themselves, or the act of applying such materials. Applying a certification listed fireproofing system to certain structures allows these to have a fire-resistance rating. Fireproofing does not allow treated items to be entirely unaffected by any fire, as conventional materials are not immune to the effects of fire at a sufficient intensity and/or duration.

Spray Fireproofing methods

Among the conventional materials, purpose-designed spray fireproofing plasters have become abundantly available across the globe. The inorganic methods include:

  • Gypsum plasters
  • Cementitious plasters
  • Fibrous plasters

The industry considers gypsum-based plasters to be "cementitious," even though these contain no portland cement, or calcium alumina cement. Cementitious plasters that contain portland cement have been traditionally lightened by the use of inorganic lightweight aggregates, such as vermiculite and perlite. Gypsum plasters have been lightened by using chemical additives to create bubbles that displace solids, thus reducing the bulk density. Also, lightweight polystyrene beads have been mixed into the plasters at the factory in an effort to reduce the density, which generally results in a more effective insulation at a lower cost. Fibrous plasters, containing either mineral wool or ceramic fibers tend to simply entrain more air, thus displacing the heavy fibers. New materials based on organic chemistry are gaining in popularity for a variety of reasons. In land-based construction, thin-film intumescent fireproofing has become more widely used. Care must be taken to ensure that such products are protected from atmospheric moisture and operational heat, which can adversely affect these organic, covalently bound products. Thicker intumescent and endothermic resin systems tend to use an oil basis (usually epoxy), which, when exposed to fire, creates so much smoke, that even though these products provide enough heat flow retardation towards the substrate, they tend to be banned from use inside of buildings because of the smoke they develop when subjected to fire, and are used mainly in exterior construction, such as a canopy overhang, exposed columns, LPG vessels, chemical plants and offshore oil and gas platforms.

In the past, Underwriters Laboratories, Inc. defined product classifications as “Cementitious Mixtures” or “Sprayed Fiber” materials. These product classifications have been withdrawn and combined to form a new single product classification called Spray-Applied Fire Resistive Material (SFRM). The term “cementitious” often misleads design professionals to believe that the product contains cement, when in fact, most commercial density products called “cementitious” do not. Ironically, most of the materials that were included in the “Sprayed Fiber” category actually do contain cement. Probably the best way to explain spray fire resistive materials is either “Wet Spray” or “Dry Spray” materials. These terms better describe the manner in which the material is mixed, conveyed and applied.

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