How to Make Wood Windowsills

Wooden windowsills look both decorative and rustic, they and can transform a plain-looking window into one that sets off the entire room. Although you can pay a professional craftsman to install wooden windowsills, your budget may not allow you to hire a professional. One option is to make your own wood windowsills using a few basic tools and supplies purchased inexpensively from any hardware shop or home improvement store. This course of action enables you to enjoy wooden sills without spending a fortune to do so.

Measuring tape
Wooden plank
Circular saw
Medium-grit sandpaper
Nails, 4-inch
Hammer
Wood caulk
Wood stain
Sponge brush
Polyurethane varnish
Paintbrush

Instructions

- 1
  Measure the width and length of the existing windowsill using a measuring tape.
- 2
  Cut a wooden plank using a circular saw to measure the same measurements as the windowsill.
- 3
  Sand the wooden plank using medium-grit sandpaper to remove any roughness and to make the wood smooth to the touch, including the edges and corners.
- 4
  Sand the surface of the windowsill using medium-grit sandpaper to ensure that the sill is even.
- 5
  Nail the wooden plank in place using 4-inch nails. Cover the nail holes with wood caulk, then allow the caulk to dry for six hours.
- 6
  Apply an even layer of wood stain onto the plank using a sponge brush. Allow the stain to dry for two to four hours.
- 7
  Apply an even layer of polyurethane varnish onto the plank using a paintbrush. Allow the varnish to dry for four to six hours.
- 8
  Squeeze a line of wood caulk along all of the seams of the wooden windowsill, and then run your finger along the seams to smooth down the caulk and create a tight seal. Allow the caulk to dry for six hours.

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