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CALCULATING MATERIAL
REQUIREMENTS
FOR STANDING SEAM ROOFS USING
EPDM
LIQUID RUBBER®
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1) Calculate Expanded Roof Surface |
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a) Total L × W areas |
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b) Establish expanded surface factor using a string or
flexible tape measure. |
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Expanded area = L × W × Factor |
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2) Determine Spread Rate based on Dry Film thickness
desired. |
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Sq.Ft. |
= |
1600 |
× |
.635 |
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Gal |
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dry film in mils |
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volume solids of product |
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Example |
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How many gallons of Liquid Rubber are needed to coat a
10,000ft2 standing seam metal roof with a 20-mil average
film thickness? |
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Expanded Surface Roughness Factor = 1.2; surface factor = .9 |
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Expanded Area = 10,000 × 1.2 = 12,000ft2 |
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Gallons needed = 12,000ft2 × 1600 × .635 × .9 = 548.6
gallons
20
45.7 |
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Click here to
Order EPDM Liquid Rubber. |
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Pro Guard Epoxy™ 2228
