Keep in mind that your garage door also has a seal that runs along the sides of the door.
Garage door leaks air on sides.
Depending on whether you have a wooden or metal garage door you ll need either nails or screws.
After unrolling the new seal along the length of the garage door you re ready to begin installing.
How to stop air leaking from the sides and top of an overhead garage door 1.
The best way to prevent garage door air leaks is to use weatherstripping.
If you have no gutters the rain could be running straight from your roof over the entire door and entering through the sides.
Measure the top and both sides of the overhead door opening with a tape measure and mark the center of the top.
Luckily you can prevent air from leaking through the sides and over the top of your overhead garage door.
Weatherstripping is inexpensive easy to install and available at any hardware or home improvement store.
Cut the weather seal to the total length needed including the 6 to 8 inch excess with a utility.
Pull on one side of the old gasket and slip on the new seal.
Therefore it is extremely important that your garage door to be well insulated and any gap or air leak sealed.
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Anchor the new seal using a hammer or screwdriver.