Measure your window's length with a tape measure. Add 3 inches to this measurement. Transfer this measurement to 1-by-8 boards. Cut the boards to the appropriate length using a skill saw. You need four cut boards for each window, or two cut boards per shutter.
Sand the boards smooth with a piece of 120-grit sandpaper. Lay the boards next to each other on a flat surface. Align the boards' top and bottom edges. Keep an even 1/2-inch gap between the boards.
Measure the two board's width and transfer this measurement to a 1-by-4 board. Cut along the line with a skill saw. Repeat three more times so you are left with four cut 1-by-4 pieces. Sand all four pieces with 120-grit sandpaper.
Lay two of the cut 1-by-4 pieces across each 1-by-8 pairing. Place one board 10 inches from the top and the second board 10 inches from the bottom. Line up the ends of the 1-by-4 boards with the edges of the 1-by-8 boards. Hold a level along the 1-by-4 boards to ensure they are straight.
Draw a light pencil line onto the 1-by-8 boards along the 1-by-4 boards' top edges. Lift one 1-by-4 board up and flip it over. Spread wood glue along the back. Place the board back across the 1-by-8 boards. Line up the board's top edge with the pencil line. Repeat with the second board on the same shutter and then the two boards on the other shutter. Wait for the glue to harden according to the manufacturer's directions.
Turn both shutters upside down. Finish securing the 1-by-4 boards to the 1-by-8 boards with 1 1/4-inch screws. Drive the screws through the boards with a drill and Phillips-head drill bit. Use four screws per 1-by-4 board, or two on each side. Mount the shutter hardware according to the manufacturer's directions.
Stain or paint the shutters prior to hanging them on your house. If you are applying stain, use at least two coats and allow the first coat to dry before applying the second coat. Paint a wood sealant, such as polyurethane, over the shutters.
Things You Will Need
- Tape measure
- Skill saw
- 120-grit sandpaper
- Wood glue
- Phillips-head drill bit
- Mounting hardware
- Stain or paint
- The directions written above create shutters approximately 15 inches wide. Make your shutters wider or narrower using different size wood planks.
- Use cedar or treated lumber to build your shutters.