How to Create Clapboard Siding

Choose straight lumber that measures 3/4 inches thick and is free from slits and knots. Because traditional clapboard siding planks measure 8 inches and overlap by 1 to 2 inches, use 1-by-6-inch or 1-by-8-inch lumber in the required width.

Set the table saw at a 10-degree angle if you're using 1-by-8-inch lumber, or at a 15-degree angle for 1-by-6-inch boards. Position the blade as high as possible, and space the fence 3/8 inch from the base of the blade.

Run the siding lumber across the saw with one long edge down, and cut a bevel along the length. Press the lumber against the fence and table, moving them slowly toward the blade to prevent the edges or ends from splitting or chipping.

Insert the roundover bit into the router. Set the depth of the router to 1/4 inch before running it along the thicker edges of the lumber counterclockwise, so they appear rounded.

Set a C-clamp into the board to set it to the work surface. Position the orbital sander over the edge of the lumber where you removed the wedge and sand the surface to remove any inconsistencies and ridges. Replace the sander with 150-grit sandpaper and rub it over both faces of the board thoroughly until it's smooth. Continue the process of cutting and sanding lengths of lumber until you create enough siding to cover the desired area.

Start installing the siding along the bottom of the surface. Snap a chalk line to form a level guideline for the base course. Set the first siding board over the surface, with its lower edge flush against the line. Drive a nail every 8 to 10 inches along the siding.

Measure 1 1/2 to 2 inches from the upper edge of the board and draw a pencil line along its width. Hold the second board against the surface, with its lower edge flush against the pencil line on the board below, and nail it in place. Continue this process of marking lines and installing siding boards until you cover the surface.