43Pass the vent vertically through the hole in the roof and fastento the roof support. The top part of the vent must be at least16 inches higher than the highest part of the hole.Make sure you have the correct flashing model; differentmodels that will fit your roof’s slope are available at yourretailer. Slide the flashing on the connector to have it sit flaton the roof. There must be a good layer of sealant betweenthe flashing and the roof to waterproof the assembly. The ventmust come up at least ¾ in. above the flashing. Paint theflashing to increase useful life and tightness. Replace shinglesat the base of the flashing.Adjust the storm collar to the vent connector and apply agenerous layer of latex-based sealant on the top edge of theflashing and slide the collar to make contact. Apply pressureto seal assembly (figure 3.2.3.8.e) Encase the vent on theconnector and tighten.3.2.4. ASSEMBLY AND FASTENING OF VENT SECTIONS3.2.4.1. HARD VENT SECTION ASSEMBLY • Apply a generous bead high-temperature latex-based sealant inside the female part of each sectionas shown in figures 3.2.4.2.a and 3.2.4.2.b. • Connect the two sections and have them overlap on at least 1.5 in. (3.8 cm). • Fasten both sections together with three self-drilling screws as shown in figure 3.2.4.2.c. Somesection have a twist lock, lock it and secure it with three screw. Follow your vent manufacturermanual...bFigure 3.2.4.2.aFigure 3.2.4.2.cFigure 3.2.3.8.dFigure 3.2.3.8.eFigure 3.2.4.2.b
