It's not enough for your windows to simply look good. They also need to provide adequate insulation. Leaks, no matter how minor they might seem, can quickly escalate and become worse. Apart from losing heat in the winter and having your air conditioner work harder in the summer, you will also need to worry about water infiltration. So, what can you do about it? Simple, you can test your windows regularly to make sure that they are closing properly and the glass is still sealed. There are three easy methods you can use to do this.
Test With A Flashlight
A flashlight can help you detect leaks around your windows if they are large enough for light to shine through. You will need to wait until it is dark and then exit your home and have somebody wait inside. Shine the flashlight around the edges of the window from the inside of your home and watch closely to see if you can see any light passing through. If light passes through, this means that air and water can too. You will most likely need to reseal your windows and you might not require a professional windows replacement. Have a professional take a look and make the appropriate recommendations before you proceed with any repairs.Test With Smoke
Even if you don't see any light shining through when using the flashlight technique, this does not mean that your windows are perfectly intact. There could be very small gaps that are not as visible but still allow air and moisture to pass through. You can try a smoke test to be sure. You will need to close all of the windows and doors in your home. Next, you should turn off your furnace and turn on all of the exhaust fans in your kitchen and bathroom. This will negatively pressurize your home and force air to be pulled through any gaps. Next, you can light an incense stick and hold it close to the exterior of your windows. Watch the smoke to see if it enters the window. If so, you can be sure that air is constantly flowing through these gaps too. You should consider having your windows replaced.