ALSAN RS Demonstration – “L” Shaped Projection This instructional video demonstrates the application of an ALSAN RS fully reinforced liquid flashing system; specifically how to properly flash an irregularly shaped "L" projection.Related Videos SOPREMA Pre-Cut Fleece Time Trial ALSAN RS Full Installation Demonstration ALSAN RS Drain Flashing Demonstration ALSAN RS Pipe Projection Liquid Flashing ALSAN RS Conduit Pipe Liquid FlashingMost Recent Videos Introducing DUOTACK SPF HFO SOPREMA Pre-Cut Fleece Time Trial SOPREMA ECO3 Smog Reducing Roofing SOPREMA at the 2018 International Roofing Expo SOPREMA City: A Virtual Reality Experience