Windows from
Wisconsin's Window Experts

10,500+ Projects Successfully Completed!


Beautiful, Energy-Efficient Windows
for Wisconsin Homeowners

At TightSeal, we offer quality, American-made windows that are beautiful and functional. Our windows are energy-efficient and have a lifetime guarantee. We’ve been in the industry for over 29 years and specialize in windows. At TightSeal, we are experts when it comes to the unique needs of Wisconsin homes.  Our windows are hand-stained and finished, meticulously crafted to be as beautiful as your home.  

Custom-Made Windows Designed for YOUR Home

At TightSeal, we understand that your home is unique. Our windows are custom-made and designed to fit perfectly in your home. No matter the style, size or color, TightSeal will work with you to find something you love. We can match existing wood trim in your home or help you pick something new. You’ll love the custom woodwork from our TightSeal craftsmen. You’ll be amazed with the difference of our meticulously hand-stained and painted windows!

2020 Award Winner
for Exceptional Customer Experience

We believe in treating people right. From the initial consultation to years after, we’re by your side. That’s why we won the Guildmaster Award of 2020, achieving a 97% satisfaction rating.

TightSeal was recommended to us by our friends. Our old windows were original to the home, they were hard to open and moldy. Our new windows are stunning!!
Waueksha, WI
We had our windows replaced in just one day! Cleaned up after themselves and entire process was professional. We recommend them to everyone.
Elkhorn, WI
TightSeal showed us all our options that we didn't even know were out there. Our friends and family love our new windows and so do we.
Racine, WI