Hot Asphalt Roofing

790 11 is an excellent choice when waterproofing both intensive and extensive vegetative roofing assemblies.

Hot asphalt roofing.

Single ply systems require ballast or fasteners because they are generally laid loose. Construction definition hot asphalt roofing. Built up roofing in which asphalt forms the waterproofing component of the roof membrane. Solid asphalt a by product of petroleum refining processes is melted on site in an industrial asphalt kettle and applied to the roof as a hot liquid.

At this temperature the asphalt is viscous enough to be mopped out evenly but not too thin that it runs uncontrollably. The proper temperature to heat asphalt before hot mopping is referred to as the equiviscous temperature evt. This viscosity is measured in centipoise cp. 790 11 hot rubberized asphalt henry company s time tested 790 11 hot rubberized fluid asphalt is formulated to provide a monolithic fully bonded roofing and waterproofing membrane.

The ideal viscosity for hand mopping is 125 cp. At the same time a 90lb felt or modified bitumen cap sheet which is a type of asphalt that is modified with rubber or fiber is applied onto the hot asphalt. On a hot built up roof the multiple plies are fused together using hot mopped asphalt to create a monolithic barrier. To begin the hot mop process a layer of hot asphalt will be spread on top of the roof s base sheet.

Every inch is firmly and completely adhered over the entire roof area without the need for ballast or fasteners. The hot asphalt is laid out evenly with a large heated mop over the surface.