Visit Sashco Sealants, booth #201. They will be hosting a hands-on demonstration of their new Cobra Lap Joint Nozzle with Through the Roof! sealant. With the help of seasoned roofing contractors, who tested various prototypes, Sashco was able to design the ideal nozzle shape specifically suited for lap joints. The new design produces a flat bead that does not require tooling yet forces a clean ribbon of sealant over the joint for a tight, permanent waterproof seal.