The beadboard comes in a lot of variety and shapes. You will need to varnish it first, then choose a suitable paint colour for your beadboard before finally painting it using a paint brush.
Mark the edges of the room where you want the beadboard panel to end. The normal standard parameter which is used widely is 48 inches, but you can choose any length of the board you want. Now use a pencil to mark a straight line at the center of each panel.
Install the first piece of beadboard on top of the sawhorses. Double check the length of the bead board and mark the bottom end minus one inch the original height. For example if you have decided the length of the board to be 48 inches, apply the mark on 47 inches. Arrange a T-square to extend that point to both ends of the beadboard corner. Use a circular saw to cut the panel at the marked line.
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There may be a few plugs and sockets which you would want to install on the panel. There is nothing to worry about; electrical sockets can easily be accommodated in the beadboard panel.
Use a screw driver to remove the screws from the front face of the socket and take off its jacket. Measure the size of the socket with the help of a ruler and then transfer those dimensions to the board. Use the set square to mark out the edges of the socket and cut it with a jigsaw.
Open the carpenter's glue bottle and spread it on the back of the beadboard panel. Use a hammer to attach the panel in front of the wall. You can also use trim nails for affixing the panel in case the need arises.