ALSAN® RS LO Primer is a 100% solids, low-odor epoxy used to promote adhesion to Metals (excluding copper), concrete, masonry, wood, and other substrates prior to application of ALSAN RS roofing, waterproofing, and trafficable surfacing systems. ALSAN RS LO Primer is also used with SOPREMA ALSAN RS 260 LO Field, ALSAN RS 260 LO Flash and ALSAN RS 263 LO Self-Leveling Mortar for low-odor applications.