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Versatile. Long lasting. Low fuming.



In creating PermaMop® modified roofing asphalt, we didn’t just one-up regular asphalts, we’ve three-upped them.

PermaMop is versatile. It’s specially formulated for use on any slope of roof. It has the softening point of a Type IV asphalt but with a lower equiviscous temperature (EVT) than any standard Type IV. It stays where it’s mopped, even on steep-sloped roofing in intense heat.

PermaMop is long lasting. In laboratory testing, ordinary asphalt exceeds 60 weather cycles (approximately 15 years). PermaMop lasts a minimum of 150% longer – withstanding up to 193 cycles. Making it an ideal choice for projects in extreme weather areas – whether it’s heat, cold or moisture.

PermaMop is low fuming. Its composition includes a technologically advanced polymer additive. When heated, the polymer floats to the surface and creates a skim layer on the kettle that traps the fumes and odor inside – without affecting the asphalt or disrupting kettle operation.

PermaMop. Just another example of how Trumbull is using Applied Innovation™ to create products that solve our customers’ biggest needs.

PermaMop® Modified Asphalt Brochure
PermaMop® MSDS Sheet

Features Benefits
All products meet ASTM D312 Each shipment meets or exceeds the physical requirements of the specified roofing grade asphalt

Consistent high flash material Proper temperature range needed to apply product safely at the EVT; flash points typically 50ºF to 75ºF higher than the 500ºF minimum

Testing in each plant and at Summit, IL laboratory All Owens Corning Trumbull products are assured to meet ASTM requirements

19 producing plants Convenient, accessible availability from coast to coast

EVT shown on each carton and bill of lading for bulk shipments Assures proper adhesion, waterproofing and application rate

Printed cartons Clearly identifies manufacturers, type, flash point, EVT, production location and production date


Physical Requirements - ASTM D312-00
    Type I Type II Type III Type IV Test Methods
    Min. Max. Min. Max. Min. Max. Min. Max.
Softening Point (ºF) 135 151 158 176 185 205 210 225 ASTM D36

Flash Point (ºF) 500 500 500 500 ASTM D92

Penetration, Units, dmm:
@32ºF 3 6 6 6 ASTM D5
@77ºF 18 60 18 40 15 35 12 25  
@115ºF 90 180 100 90 75  

Ductility @77ºF, cm 10.0 3.0 2.5 1.5 ASTM D113

Solubility in Trichoroethylene % 99 99 99 99 ASTM D2042

Asphalts shall be homogenous and free of water and shall conform to these physical properties


Typical Physical Characteristics for Trumbull Asphalt
    PermaMop  
Softening Point (ºF) 215-235  

Flash Point (ºF) 525  

Penetration, Units, dmm:
@32ºF 7  
@77ºF 18  

Ductility @77ºF, cm 7.0  

Solubility in Trichoroethylene % 97.5  

Typical Application Temperature    
For Hand Mopping    
EVT @125 CPS +/- 25ºF 375  
For Machine Spreader    
EVT @ 75 CPS +/- 25ºF 395  

Plant Specific EVTs