PENNCOAT 101 Membrane is a multiple layer, chemical-resistant, asphaltic membrane barrier that is applied as a built-up system to suitably prepared concrete substrates. It is used as an underlying membrane on concrete substrates to be further protected with chemical resistant brickwork. PENNCOAT 101 consists of the following components: PENNPRIME™ 101, an asphaltic cutback primer; PENNCOAT 101 an unfilled, fluxed, 100% solid oxidized asphalt; and PENNPLY™ 101, an open mesh glass cloth saturated with an asphaltic compound. PENNCOAT 101 is installed at a nominal 1/4 in thickness for flooring applications, and 3/8 in for trench and sump service subject to continuous immersion service.