Have Beautiful Replacement Windows Installed at Your Home in Merrillville, IN

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Aging windows can cause many problems, from decreasing your home’s energy efficiency to weakening its structural integrity. To avoid these issues, turn to Trim-A-Seal to have your outdated windows replaced. We’re a local, family-owned home improvement company that has been serving homeowners in the Merrillville, Indiana, area since 1950. Our team is dedicated to excellence and we’re proud to provide top-quality replacement windows, expert installation services, strong warranties, and old-fashioned customer care. When you partner with us, you can rest easy knowing your window replacement will be done right the first time.

About Our Windows

At Trim-A-Seal, we believe our customers deserve the very best. That’s why we install premium replacement windows that are expertly manufactured in the United States. We offer the following types of windows:

Vinyl Replacement Windows

Vinyl windows are one of the most popular options on the market, and for good reason. The vinyl replacement windows that we install are highly energy efficient and will help insulate your home, potentially reducing your energy costs. They are also fade-resistant and virtually maintenance free, ensuring your new windows will look like new with almost no upkeep required long into the future.

Wood Replacement Windows

Our wood windows are a traditional choice that will look beautiful in any style home. Their rich, wooden frames can be painted or stained any color, ensuring your new windows will be the perfect complement to your home’s design. Plus, our wood windows offer impressive energy efficiency and will help prevent heat from transferring into and out of your home.

Schedule a Consultation

To learn more about the replacement windows we install, contact Trim-A-Seal today. We would be happy to schedule a free consultation at your home in the Merrillville, IA, area. When you call, remember to ask about financing, which is available to homeowners who qualify.

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Featured Customer Review

Just finished our exterior project. New siding, windows, gutters, soffit, and front door. it's literally like having a brand new house! We love the finished product and love the professionalism from everyone involved. You've gained lifelong customers

Dan C.

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Transform Your Residence into the Dream Home You’ve Always Wanted

Trim-A-Seal is a reliable partner you can trust to treat you and your home with respect. Our unparalleled experience in the home improvement industry has made us the leading source for homeowners in need of affordable, durable, and beautiful upgrades.

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Outstanding Reviews

The installers that came to the house were very personable and cleaned everything up, installation was quick and we are enjoying our sunsetter so much. Thanks for the great service. We are telling everyone about Trim-A-Seal!!!!

Merry E.

The technician was very professional and completed the work in a timely manner. The craftsmen was excellent and we would recommend your organization to our friends.

Ernestine J.

I am completely satisfied with Trim-A-Seal installers. They did a great job installing my SunSetter motorized awning. They explained and showed me how it worked and answered all of my questions. I definitely would recommend them.

Florence B.

Dan C.

We are thrilled & more than satisfied with how our garage floor turned out. Pat was our salesman and presented the product and installation process professionally and without pressure. Tom and Jerome were our installation team and were professional, conscientious, thorough and were very hard working. Based on our experience we would not hesitate to recommend Trim-A-Seal.

Eileen Roe

Mike was our salesman and he was great to work with , no hard sell , no bad mouthing his competitors, unlike the other company that came out. The installers were extremely friendly , explained everything they were doing and cleaned up after they were done. Highly recommend.

Shelley Black

We love our Sunsetter awning! From the time we met with the friendly and helpful salesperson from Trim-A-Seal to the efficient and talented installation crew everyone was courteous and professional. We face west with the sun reflecting off the lake so an awning was a must. We are very happy with our choice of product as well as Trim-A-Seal.

Paula Belcher

We give Adam and Richard a A+, great job enjoyed them being here on time ,friendly , explied well, couldn't ask for more!

Ann Y.

We struggled to find a gutter guard capable to protect our new home surrounded by trees. Gutter Helmet is the CLEAR right choice. Trim A Seal handled the installation professionally and on time. We got what we were promised!!

Art C.

Our Installers, Holland and Darrell, both did an exceptional job of installing our new awning. They explained the operation of the unit thoroughly. Top notch team!

Burt M.

I had maintenance done on my gutters and I was pleased with the work. Would use this company again.

Darlene L.

This morning trimASeal came out to start on my siding, met with Adam and Richard, we did the walk around, Adam explained everything so I understood it, and he is very easy to talk with and very knowledgeable, will post after the job is done to.

Edward C.

Florence B.

Bruce was very personable and professional. He educated me on the product options, enhancements and construction quality of Trim-A-Seal door products. Bruce will insure you get quality and satisfaction with exactly what you want to purchase. Thanks, I will return when it's time to get my windows.

Sandra C.

They took care of some unexpected problems for my grandfather and did what they could to make things work. Adam and Richard did a wonderful job.

Stephanie C.