Flashing (weatherproofing) bark was occasionally used as a flashing material. Most flashing materials today are metal, plastic, rubber, or impregnated paper. Metal flashing materials include lead, aluminium, copper, stainless steel, zinc alloy, other architectural metals or a metal with a coating such as galvanized steel, lead-coated copper, anodized aluminum, terne-coated copper, galvalume (aluminum-zinc alloy coated sheet steel), and metals similar to stone-coated metal roofing. Metal flashing should be provided with expansion joints on long runs to prevent deformation of the metal sheets due to expansion and contraction, and should not stain or be stained by adjacent materials or react chemically with them.
What It Is! (Kahil El'Zabar album) What It Is! (Kahil El'Zabar album) What It Is! is an album by American jazz percussionist Kahil El'Zabar, which was recorded in 2012 and released on Delmark. It was the debut of a quartet comprising three young players from the school of Chicago's AACM: tenor saxophonist Kevin Nabors, pianist Justin Dillard and bassist Junius Paul. The album includes five originals and two jazz standards by John Coltrane: "Impressions" and "Central Park West". The "Down Beat" review by John Murph states "Kahil El’Zabar moves toward the center this time around and releases one of his most accessible discs yet. The adventurous