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4 Signs of a Bad Window Installation Job

Window installation is a job that’s best left to professionals. But before hiring a contractor to carry out this type of work, make sure that they are qualified and experienced in installing windows.

Once the project is done, carefully check every window they have installed. Ensure that everything is in order and the installation is done according to industry standards. Watch out for signs of a bad window installation job, such as the ones listed below.

Messy Caulking

Proper application of caulking is essential for weatherproofing and sealing your window. If the caulking on your window looks sloppy, it may eventually result in leaks.


Drafts could mean insufficient insulation, and these usually results in water or air entering your home. Additionally, this can also lead to higher energy costs. To know if your windows contractor did a good job, try to observe if there are drafts when you walk by your window.


If you notice fog between the window panes, this can either be due to a damaged seal or poor window installation quality. Have it checked by a professional so that you can pinpoint the reason behind this issue. Don’t hesitate to ask your original contractor too, as they may be willing to fix any error that must have happened during the installation.

Difficulty in Operating the Window

If it takes a lot of effort for you to open and close your window, there might be something wrong with how it was installed. Failure to address this kind of issue can lead to bigger problems, and your window might become fully inoperable.

Renewal by Andersen® of Milwaukee has completed thousands of installation projects involving doors and window products. To learn more about our services, call us at (262) 522-3034 or fill out our contact form. We serve customers in Milwaukee, Wisconsin.

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