HOT ASPHALT CAN BE MOPPED ONTO FAST FELT® UNDERLAYMENT

After subjecting the FAST FELT® tabs to 30 seconds of continuous vigorous mopping with a cotton Hot Mop fully saturated with either Type III (at a 475° F beginning operating temperature) or Type IV (at a 500° F beginning operating temperature) asphalt, FAST FELT® tabs revealed no visual distortion and resulted in rupture (pull-over) performance values which compared favorably to the average Base Sheet Pull-Through Resistance Data reported for the FAST FELT® specimens by the independent Florida Registered Professional Engineer.

Typical Low Slope / Flat Roof Hot Mopping Asphalt Application

Watch the Video of Fast Felt® Samples Being Hot Mopped:

This video requires Flash 6 or higher. Approximate file size 3,500K, may take some time to download over 56K modem.

Click Here to download Flash

Application Temperatures:

EVT ("equiviscous temperature") is the recommended temperature range for applying hot bitumens, including asphalt.  Roofing asphalt should be manufactured in such a manner as to create an end product which will comply with the ASTM D 312 standard.

ASTM D 312 Asphalt EVT Values for Hot Mopping - A Table

Independent Laboratory Report: "Comparative Hot Mop and Rupture Tests at 475° F to 500° F" - Report Date: January 15, 2004

requires Adobe Acrobat Reader