You hardly ever hear the word “leak” used in a positive way, and that is definitely true when it comes to your windows. Whether it is summer or winter, leaky windows will cost you in energy, since heat will either leave or enter your home through those leaks.
Finding leaks might be tricky, but using thermal imaging you can see where the temperature difference is apparent. If there are some serious cracks and holes, you might even find them using a flashlight to shine through with a spotter on the other side.
For those that are handy, it is definitely possible to fix cracks around the window on your own. If you are dealing with wood rot, it is important that every trace of rot is removed or it is likely to surface once again. After the old wood has been removed, wood-filler can be used to build the window back up to an even surface that can be finished and virtually undetectable.