Step 1
Hold a siding starter strip, provided by the manufacturer, horizontally at the bottom of the area to be sided. Place a level on the strip and adjust it as necessary. Drive 3/4-inch or longer roofing nails through the holes in the nailing fin of the strip with a hammer. Place nails every 8 to 10 inches.
Step 2
Position an inside or outside corner post -- depending on the wall you are siding -- vertically against the side of the wall where you want to start the siding. Cut the post to length with tin snips so that it hangs below the starter strip at the bottom of the wall by 1/2-inch and is within 1/4-inch of the eave or soffit at the top of the wall. Nail the post into place with roofing nails spaced every 10 to 12 inches. Install another post on the opposite side of the wall in the same fashion.
Step 3
Insert the bottom of the first piece of siding into the starter strip. Push down on the siding until it snaps into place. Push the siding into the groove in the corner post. Drive roofing nails through the holes in the nailing fin at the top edge of the siding every 10 to 12 inches. Do not drive the nails completely in to give the siding room to contract and expand with the changing climate.
Step 4
Slide the vinyl edge of the next piece of siding in between the foam backing and the vinyl edge of the piece of siding already installed. Push the two pieces together until an overlap of 1 inch is achieved. Snap and nail the piece into place in the same manner as the first. Cut the siding to length with tin snips when the end of the wall is reached. Bow the last piece in the run slightly so that the end can be fitted into the groove on the inside or outside corner post then snap and nail it into place.
Step 5
Start the next row of siding by positioning the first piece over the first row and pushing down until it snaps into place. Push the piece horizontally so that the end slides into the groove on the corner post. Install the rest of the siding on the wall in the same fashion.