MOISTURE RETARDER (also known as a moister barrier) a layer of plastic film or other material applied to the inner side of metal jacketing to inhibit jacket corrosion by interfering with the formation of a galvanic cell between the dissimilar metal of the pipe and jacket or by preventing crevice corrosion.

POLYKRAFT multilayer composite film used as a moisture retarder on metal jacketing consisting of at least one layer of minimum 40 LB kraft paper and one or more layers of plastic film, usual polyethene at a minimum thickness of 1.5 mils.

Aluminium roll jacketing is available in a smooth finish or a stucco embossed pattern. Either finish can come with 5mm (3 / 16") corrugations.

Thickness : 0.4 mm, 0.5 mm, 0.6 mm, 0.8 mm, 1.0 mm (other thicknesses available).
Widths: 914mm and 1220mm (914mm for corrugated rolls)
Length: 30 meters (other lengths available on request)

APPLICATIONS

The preferred method for specifying metal jacketing is to require the use of Polykraft Moisture Barrier to help prevent corrosion of the interior surface of the metal jacketing and the underlying insulated pipe, tank, or equipment. Polykraft Moisture Barrier is preferred on all types of metal jacketing including aluminium, stainless steel, galvanized steel, aluzinc, and aluminized steel types I and II to help prevent this corrosion. Polykraft Moisture Barrier is preferred on the metal jacketing for all applications of mechanical insulation including that used in hot, cold, pipe, tanks, equipment, industrial, commercial, petrochem, and oil/gas applications.