- Heat loss
- The proliferation of bacteria
- Infiltration of water / air / insects
- Fogging within the windows glass
Thus, your construction materials will remain in better condition, the quality of air in your home will be of better and finally, the caulking will allow you to save on your heating cost $$.
Actually, according to the Canada Mortgage and Housing Corporation (CMHC), the caulking of windows and doors is an investment that is recovered in heating costs in a period of approximately 7years.