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7GP Portland Based Fireproofing
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Descriptions

Southwest Fireproofing Type 7GPTM is formulated with Portland cement as the base ingredient rather than gypsum cement in order to provide greater water resistance. The combination of Portland cement and Vermiculite has been widely used in lightweight construction applications for decades. Insulated roof decks and swimming pool bases are well known applications in addition to fire resistive coatings.

Specific Uses

Type 7GPTM is for use in those areas requiring medium or standard density fireproofing where prolonged moisture exposure does not permit use of gypsum plaster or wallboard.

Benefits

Type 7GPTM adds the water resistance of Portland cement binder when required for interior standard or medium density service areas.

Type 7GPTM is cost effective because it is priced competitively and is simple and easy to install. The installed material is strong, durable and reliable, with physical properties that meet or exceed industry standards as shown in the data table below.

Applications

Type 7GPTM is used in medium density service conditions as shown in the Selection Chart.

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Swimming pools
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High humidity processing areas
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Other moisture problem areas

                                                                                   

TYPE 7GP CEMENTITIOUS FIREPROOFING IS SPRAY-APPLIED TO STRUCTURAL COMPONENTS OF BUILDINGS FOR FIRE RESISTANCE. UNDERWRITERS LABORATORIES FIRE TEST RESULTS HAVE QUALIFIED IT FOR USE IN OVER 100 DESIGNS.  UL DESIGN PAGE

TYPE 7GP CEMENTITIOUS FIREPROOFING IS DERIVED FROM THE BENEFICIAL COMBINATION OF PORTLAND CEMENT AND VERMICULITE. IT IS   NON-COMBUSTIBLE AND UNDER FIRE, IT RELEASES WATER OF CRYSTALLIZATION WHICH TURNS TO STEAM AND RETARDS HEAT TRANSFER.   

Physical Characteristics of Type 7GPTM

Property and Test Method

Value / Result*

Density, ASTM E-605

22 pcf (350 kg/m3) nominal
  Combustibility, ASTM E-136   Passed, non-combustible

Compressive Strength, ASTM E-761

17,136 lb/ft2 (817 kPa)

Cohesion/Adhesion, ASTM E-736

1,319 lb/ft2 (63.2 kPa)

Effect of Impact, ASTM E-760

Passed, no spalling, cracking or delamination

Effect of Deflection, ASTM E-759

Passed, no spalling or delamination

Corrosion of Steel, ASTM E-937

Passed, no contribution to corrosion

Erosion by Air, ASTM E-859

Passed, 0.000 g/ft2 (0.00 g/m2)

Surface Burning, ASTM E-84

Flame Spread 0, Smoke 0

DOD Classification, ASTM E-1042

Type 1, NRC 50, class (a), Category A

Fire Resistance, ASTM E-119

Passed, see UL DESIGNS

Fungi Resistance, ASTM G-21

Passed, no growth with optional fungicide

* Values are from laboratory tests under controlled conditions and not intended to replace industry standards for specification purposes.

           

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                       Last modified: 8/22/07