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Building Design and Construction Handbook - Merritt - Ventech!

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ROOF SYSTEMS 12.9<br />

FIGURE 12.4 Torch application of atactic polypropylene (APP) modified bitumen membrane.<br />

• ASTM D6162, ‘‘St<strong>and</strong>ard Specification for Styrene Butadiene Styrene (SBS)<br />

Modified Bituminous Sheet Materials Using a Combination for Polyester <strong>and</strong><br />

Glass Fiber Reinforcements’’<br />

• ASTM D6163, ‘‘St<strong>and</strong>ard Specification for Styrene Butadiene Styrene (SBS)<br />

Modified Bituminous Sheet Materials Using a Glass Fiber Reinforcements’’<br />

• ASTM D6164, ‘‘St<strong>and</strong>ard Specification for Styrene Butadiene Styrene (SBS)<br />

Modified Bituminous Sheet Materials Using Polyester Reinforcements’’<br />

• ASTM D6222, ‘‘St<strong>and</strong>ard Specification for Atactic Polypropylene (APP) Modified<br />

Bituminous Sheet Materials Using Polyester Reinforcements’’<br />

• ASTM D6223, ‘‘St<strong>and</strong>ard Specification for Atactic Polypropylene (APP) Modified<br />

Bituminous Sheet Materials Using a Combination of Polyester <strong>and</strong> Glass<br />

Fiber Reinforcements’’<br />

• ASTM D6298, ‘‘St<strong>and</strong>ard Specification for Fiberglass Reinforced Styrene Butadiene<br />

Styrene (SBS) Modified Bituminous Sheets with a Factory Applied Metal<br />

Surface’’<br />

For each of these st<strong>and</strong>ards, except ASTM D 6298, type classifications (e.g., Type<br />

I, Type II) differentiate products (covered by the same st<strong>and</strong>ard) by the products’<br />

dimensions, masses <strong>and</strong> physical properties. In addition, grade classifications differentiate<br />

products by the products’ surfacing type: Grade G designates granule<br />

surfacing <strong>and</strong> Grade S designates smooth surfacing.<br />

Instead of incorporating prefabricated modified bitumen sheets, membranes can<br />

also be constructed with modified mopping asphalt <strong>and</strong> felts (of the type used for<br />

BUR construction). For modification of asphalt for application by mopping or by

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