This chart is for use in areas where yearly temperature changes do NOT exceed 100 degrees Fahrenheit. Keep in mind that the temperature of the roof material is always higher than the

 
 

This chart is for use in areas where yearly temperature changes do NOT exceed 150 degrees Fahrenheit. This chart applies to most places in the U.S.

Keep in mind the temperature at the time of installation.On a cold day the material is contracted so make room for expansion.

On a hot day the material is expanded so make room for contraction.

For more detailed information on this see
Explained: Expansion and Contraction

 
 
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ESE Machines, Inc. 21 S. Caln Rd. Coatesville, PA 19320 ph.800.854.7361
v3.0 © 2008 ESE Machines, Inc.