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The Premier Home Improvement Company in Gary, IN
Serving Northwest Indiana and the Chicagoland Area for 75 Years
A house isn’t just four walls and a roof. It’s where memories are made, where life unfolds, and where you should feel most comfortable. But when your home’s exterior starts showing its age, it doesn’t just affect how it looks. It can impact your energy bills, security, and overall enjoyment of your space.
At Trim-A-Seal, we believe your home should be a source of pride, not frustration. Since 1950, we’ve been helping homeowners in Gary, IN, and the surrounding areas upgrade their windows, doors, siding, gutters, and more with high-quality solutions that are built to last.
We don’t just install products. We provide expertise and craftsmanship that ensures your home stays beautiful, functional, and well-protected for years to come.
Whether you need to stop drafts from leaky windows, replace a worn-out door, or completely refresh your home’s exterior, we’re here to help. With 75 years of experience, we know what works - and more importantly, what lasts.
Upgrade Your Home with Trim-A-Seal
Tired of sky-high energy bills? Our energy-efficient windows help keep your home comfortable year-round.
Financing Available
Seal the Deal
What Areas Do We Serve?
We’re proud to provide our expert home improvement services to homeowners throughout Lake County, Porter County, and the Chicagoland area. Some of the communities we serve include:
Lake County, IN: Gary, Hammond, Schererville, Crown Point, and more
Porter County, IN: Valparaiso, Chesterton, Portage, and surrounding towns
Chicagoland Area: Roseland, South Shore, Hyde Park, Gage Park, and more
And if you’re looking for awnings or shade solutions, we serve an even wider area - including all of Northern Indiana, Eastern Illinois, and Western Michigan!
What to Expect When You Hire Trim-A-Seal
Choosing a home improvement company is a big decision - and we believe you deserve a team that delivers not just great results but a great experience from start to finish.
Here’s what you can expect when you work with Trim-A-Seal:
Personalized Consultation: Every home is unique, and so are your needs. We start with a thorough consultation to understand your goals, assess your home’s condition, and recommend the best solutions for your budget and lifestyle.
Transparent Pricing: No hidden fees, no surprise costs. Just honest, upfront pricing. We provide detailed estimates so you know exactly what to expect before any work begins.
Expert Guidance: Not sure which windows will be the most energy-efficient? Wondering if you should repair or replace your siding? Our experienced team will walk you through your options, offering expert advice based on decades of experience.
Professional Installation: Our team arrives on time, works efficiently, and follows best practices to ensure a seamless installation.
Respect for Your Property: We understand that a home improvement project can feel like an intrusion. That’s why we take extra care to protect your landscaping, clean up thoroughly after the job is done, and leave your home looking better than we found it.
Ongoing Support: Our relationship doesn’t end when the project is complete. If you have any questions or concerns after installation, we’re here to help. Our customer service team is always available to assist with any follow-ups or maintenance needs.
Ready to experience the Trim-A-Seal difference for yourself? Reach out to our Gary, IN, home remodeling team today to get started! We’ll be happy to answer all your questions and provide you with a free estimate.
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
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The Seal Of Approval
We Show Up on Time
We Respect Your Home
We Back Up Our Warranties
An Unmatched Commitment to Customer Care
Our technicians are more than just installers. They’re seasoned experts who treat every project with the precision and care it deserves. With our team on your side, you can feel confident your job will run smoothly from start to finish.
We don’t compromise on quality. Trim-A-Seal uses only premium materials from trusted brands. And, with our industry-leading warranties, you can trust that your investment is protected, giving you peace of mind for years to come.
At Trim-A-Seal, we're not just about improving homes. We're about improving lives. Through our partnership with the Indiana Canine Assistant Network (ICAN) we support the training of service dogs that provide essential support to individuals with disabilities.
We believe home improvement should be affordable for everyone. That's why Trim-A-Seal offers exclusive discounts on our Seal the Deal page, so you can get top-tier products and installations without the premium price.
Our History: Serving Our Local Community Since 1950
For over 75 years, Trim-A-Seal has been more than just a home improvement company. We’ve been a part of the fabric of Northwest Indiana, Chicagoland, and Western Michigan, earning the trust of homeowners one project at a time.
Over the decades, we’ve built a reputation for exceptional service, not just through the quality of our work, but by staying true to our roots as a third-generation, family-owned business.
From the beginning, our mission has been clear: provide superior home improvement services at affordable prices. This commitment to excellence has helped us grow, but it’s our dedication to the community that’s made us a local favorite.
We pride ourselves on delivering outstanding products from industry-leading manufacturers and taking the time to guide our customers through every decision. Whether it’s gutters, windows, or siding, we’re here to help homeowners make informed choices that best suit their needs.
Our long-standing success is a testament to the relationships we’ve built and the service we’ve provided. We are proud of the legacy we’ve created and we are excited to continue serving the people of Gary, IN, and beyond for many years to come.
Check Out Our Exceptional Work
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!!!!
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.
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.
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
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.
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.
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.
We give Adam and Richard a A+, great job enjoyed them being here on time ,friendly , explied well, couldn't ask for more!
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!!
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!
I had maintenance done on my gutters and I was pleased with the work. Would use this company again.
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.
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.
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.
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.
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