DELIVERY AND STORAGE

A. All material is to be delivered in original unopened packages bearing the name of the manufacturer, the brand and proper Underwriters’ Laboratories, Inc. label for fire resistance classification.

B. The material shall be kept dry until ready for use. Packages of material shall be kept off the ground, under cover and away from sweating walls and other damp surfaces. All bags which have become wet before use shall be discarded. Stock of material is to be rotated and used before its expiration date.

STEEL AND CONCRETE SURFACES

A. Prior to application of fireproofing, an inspection shall be made to determine that all steel surfaces are acceptable to receive fireproofing. The steel shall be free of oil, grease, excess of rolling compounds or lubricants, loose mill scale, excess rust, non-compatible primer or other substances that will impair proper adhesion. Where necessary, the cleaning of steel surfaces to receive fireproofing shall be the responsibility of the general contractor.

B. The project architect shall determine if painted or primed steel to receive fireproofing has been tested in accordance with ASTM E-119, to provide the required fire resistance rating.

C. Fireproofing shall be applied to the underside of roof deck assemblies only after roofing application is complete and roof traffic has ceased.

D. No fireproofing shall be applied prior to completion of concrete work on steel decking.

MIXING

A. Type 5 fireproofing (including 5GP^TM, 5EF^TM and 5MD^TM) shall be mixed by machine in a conventional, plaster type, mixer or a continuous mixer designed specifically for cementitious fireproofing. The mixer shall be kept clean and free of all previously mixed material. The mixer speed in a conventional mixer shall be adjusted to the lowest speed which produces adequate blending of the material and a mixer density of 45 + 6 pounds per cubic foot.

B. Using a suitable metering device and a conventional mixer, all water shall be first added to the mixer with the blades turning. Add material and mix until lump free and all material is thoroughly wet. A mixing time of two minutes and a wet density of 45 pcf are desirable. Extended mixing will increase yield. However, two much mixing may reduce in-place density below the minimum established by Underwriters Laboratories Inc.

APPLICATION

A. Application of fireproofing can be made in the following sequence:

1. For thicknesses of approximately ½ inch or less, apply in one pass.

2. For thicknesses of 5/8 inch or more, apply subsequent passes after the first coat has set.

B. Type DK^TM shall be applied to all cellular steel floor deck units with flat plate on the bottom and to roof deck units where required prior to the application of Type 5^TM. Type DK^TM shall be applied in accordance with manufacturer’s application instructions.

C. Type 5^TM Fireproofing material shall not be used if it contains partially set, frozen or caked material.

D. Type 5^TM shall have a minimum average dry, in-place density specified in designated ULI Designs ir higher if required by contract documents.

E. Type 5^TM is formulated to be mixed with potable water at the job site.

F. Type 5^TM is applied directly to the steel using standard plastering spray equipment or continuous mixer/pump units. A spray gun with a properly sized orifice and air pressure of approximately 20 psi will provide the correct spray- pattern, hangability, density and texture.

TEMPERATURE AND VENTILATION

A. An air and substrate temperature of 40⁰F. (4.5⁰C) minimum shall be maintained for 24 hours prior and subsequent to application.

B. Ventilation shall be provided to properly dry the fireproofing after application. In enclosed areas lacking natural ventilation, air circulation and ventilation must be provided.

FIELD TESTS

A. The architect may select, and the owner will pay for an independent testing laboratory to sample and verify the thickness and density of the fireproofing in accordance with the provisions of ASTM E-605, "Standard Test Method for Thickness and Density of Sprayed Fire Resistive Material Applied to Structural Members", or Uniform Building Code Standard No. 43-8, "Thickness and Density Determination for Spray Applied Fireproofing".

SAFETY

A. Type 5^TM Fireproofing is slippery when wet. The general contractor and applicator shall be responsible for posting appropriate cautionary "SLIPPERY WHEN WET" signs. Signs should be posted in all areas in contact with wet fireproofing material. Anti-slip surfaces should be used on working surfaces such as scaffolding.

B. Read and post the Material Safety Data Sheet.

End of section 2/2005

Southwest Fireproofing Products Company, Albuquerque, NM 87107 Phone: (505) 345-1633

©2004 Southwest Fireproofing Products Co.

Southwest Fireproofing, Type 5GP, Type 5EF, Type 5MD, Type 7GP, Type 7HD, Type 1XR, Type DK, Type HC and Type 7TB

are trademarks of Southwest Fireproofing Products Co.

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