siding Installation Sequence
Siding panels should be installed with the lap joint facing away from the prevailing wind like the roof. Beginning at an opening, such as a door or window, minimizes cutting (see Figure 4).
Do not run siding sheets all the way to the ground. It is important that all siding panels be prevented from permanently contacting the soil; siding panels should lap at least 3 inches over the foundation or splash board. It is necessary to provide a base of concrete block, mortar or other material 12 to 18 inches high and end the siding sheets at that point to minimize sheet corrosion.
The first siding panel must be plumb to assure straight alignment of the entire row of panels. A wooden 2 x 4 can temporarily be nailed horizontally as a guideline about 3 inches below the top of the baseboard or foundation. Base trim can also be used as a guideline and to trim off the bottom edge. After the siding is permanently fastened, the 2 x 4 guide can be removed. Temporarily fasten the first panel at the starting edge. Install the second panel next to the first with the panels overlapping. Temporarily fasten all panels; permanently fasten when all panels are in line.