NEED HELP - Energy Efficiency - Insulation/Windows and Doors
The incense idea is not all that bad, IF, the wind is blowing at the time. You may want to invest in an infared temperature gun. These are the type used to shoot a dot on machinery to see what the temps are. You could shoot the dot on a wall and slowly move it across the surface and see if it changes significantly near doors or windows. Just a thought. Repairing could include using foam in a can. Just make sure you get the low volume type so you don't apply too much pressure against window frames whick could "push" them out of shape. Good luck.
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