commercial roofing in Dallas

Hey, Bank Account! Have You Lost Weight?

The construction industry sees regulations and standards being changed, often times to improve energy efficiency. One very important change is the ASTM C1289-13e1 standard for insulation testing that went into effect on January 1, 2014 providing new testing methods for the determination and calculation of Long-Term Thermal Resistance (LTTR) values for Polyi

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