of the flow. 11-04, 4, All seams shall be made in the direction METAL FLASHINGS: Metal cap flashings shall be installed at all intersections of roofs with vertical surfaces, except at plumbing vents, over-all base flashings and elsewhere as indicated on the drawings or required to provide watertight protection. Exposed edges of all flashings shall be folded back 1/2 inch to provide stiff- ness, Metal cap flashings shall turn down over base flashings not less than inches. The upper edge of cap flashing inserted in concrete having open-type reglets shall be secured with coiled-copper strips or lead plugs spaced approximately 12 inches on centers. The cap flashing shall be formed to provide spring action against the base flashing. Reglets shall be pointed with plastic cement. 11-05. EOUVERS: Metal louvers shall conform to the size and design indicated on the drawings. Blades shall be accurately fitted, to the frames. where possible, firmly secured, and soldered or riveted Louvers shall be constructed of aluminum and if constructed of ferrous metal shall be suitable processed to resist corrosion. Insect screens shall be provided on inside face of louvers where shown or directed; screening to be plastic mesh as specified in the "Carpentry and Related Work" section. Sight proof door louvers where called for shall have chevron, inverted "V" type blades. Dark room door louvers where indicated shall have "N" shaped blades finished with a special non-reflective type black lacquer. 11-06. MISCELLANEOUS SHEET METAL WORK: Sheet metal items not covered elsewhere in this section shall be as indicated on the drawings and as required to provide a water- tight installation. Formed sheet metal for metal-covered work shall accurately reproduce the details and design shown, and profiles, bends, and intersections shall be sharp, even, and true. Joints shall be locked, or lapped, and soldered, as applicable. Reinforcement shall be provided as required. 11-07. REGLETS: Reglets for flashing to concrete shall be provided and shall be set in the forms where and as shown on the drawings, or required to provide watertight connections. Reglets shall be a manufactured product constructed of sheet aluminum of approved design and shall be complete with all fittings and special shapes as may be required so as to be watertight. 11-4 Reglets of all types