If you have wooden windowsills that are a bit worse for wear and in need of some TLC, follow this handy step-by-step for windows as good as new.
You will need
Dremel Multi-Max tool
wood and metal flush cut blade MM422
wood and drywall saw blade MM450
glue gun and 7mm wood glue stick
marker pen or pencil and ruler
primer, undercoat and gloss paint
First, press your finger into the wood on your windowsill and check which areas feel soft and therefore, rotten. To make sure you remove all the rot, you will need to cut an area that is slightly larger than the soft area - mark where you need to cut with a marker pen or pencil and ruler.
Make a vertical cut to the sides and back of the rotten area, this can be done easily using a power tool such as the Dremel Multi-Max fitted with a wood and metal flush cut blade.
Run along the front of the rotten area with a saw blade to make a lateral cut and remove the rotten section. If the piece of wood is too deep to cut out the rotten area in one go, then cut it out in sections.
Mark up your new piece of hardwood with the right dimensions to replace the rotten area, then cut with a saw or jigsaw. Now you are ready to glue the new piece of hardwood in place using a glue gun and wood glue.
Finally, fill any gaps or blemishes with wood filler and sand until smooth. Then prime, undercoat and paint to finish.