The windows in my bedroom is of insulating glass and I can find them getting foggy day by day. I tried glass cleaners but nothing seems to work. I can’t see through the window clearly and neither does the sunlight penetrate indoors. What really can be the solution? Will I have to go for a window replacement [ canglow.ca/window-replacement-edmonton/ ] or can I fix this with a help of a pro..? Suggestions required.