LOOSE CAP CELLS

The manufacturer recommends that only one-piece roof curbs be used with SSR roof systems. The roof curb will be installed under the roof panels on the upslope end and over the panels at the downslope end. To accomplish this, the roof panels must be endlapped at the downslope end of the curb. This allows both ends of the curb to shed water and places the heavier gauge metal of the curb under the roof panels for better resistance to foot traffic. The exception is at the downslope end where the curb is on top of the roof panels. Since there are endlaps at this area, back-up plates provide support. Cinch straps (18 gauge Galvalume®) furnished by the curb manufacturer are used at the top and sides of the curb to form a compression seal.

Inside cap cells (for top) and outside cap cells (for bottom) are used to seal the panel trapezoid to the roof curb. If curb placement is not critical (within 12), the cap cells may be factory attached to the curb if the curb must be located in a precise location, order the cap cells loose for field installation.

For the purpose of these instructions, a curb with factory attached cap cells is illustrated.