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Heat-Welded. Energy Efficient. Designed for the Long Haul. TPO Roofing Built to Perform

TPO (Thermoplastic Polyolefin) roofing offers outstanding performance for flat and low-slope structures — combining watertight protection with reflective, energy-saving properties. At Custom Installations, we deliver full-system TPO solutions that are custom-fitted, expertly welded, and built for the Midwest’s harshest seasons.

For over 50 years, we’ve been the go-to contractor for high-spec roofing systems. Our steep-slope experience brings unmatched precision to every flat roof — from detailing around curbs and drains to full thermal layout planning.

  • Licensed, Bonded & Insured in IL & WI
  • Heat-Welded Seam Specialists
  • Tapered Insulation for Ponding Control
  • Ideal for Additions, Garages & Light Commercial
847-932-4500
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No spam. No obligation. Just straight answers and a clear quote.

By clicking "Submit", you agree to have Custom Installations contact you about a free estimate and keep you informed about sales in the future. We may use an auto-phone system to contact you by phone or text. You do not need to make a purchase or submit this form but instead can call (847) 932-4500 to arrange for a free estimate. Please be aware that all calls are recorded for quality and safety purposes. Privacy Policy

Our Certifications & Trusted Brands

select shingle master
davinci
james hardie
lp smartside
cedar shake
gaf master elite
Slate Roofing Contractor

Our Preferred TPO Roofing Systems

We use field-tested materials from the industry’s most reliable TPO manufacturers — systems that deliver long-term performance, energy efficiency, and ease of repair if ever needed.

Kutz Cedar Shake

Carlisle SynTec

Highly flexible and durable with excellent weld strength and chemical resistance.

Cedar Copper work

GAF EverGuard® TPO

Known for outstanding energy efficiency and heat-welded seam integrity.

A house with a cedar roof and a large yard, featuring an RV parked in front.

Versico Roofing Systems

Consistent quality and compatibility across TPO accessories and insulation products.

Looking for a specific spec or color?

We can match architectural plans and manufacturer requirements across residential and commercial installs.

Get Your Free Estimate
Drone-captured images of commercial buildings with asphalt shingles and TPO membrane roofs on a sunny day

TPO Isn’t Just a Membrane — It’s a System That Works Together

Long-lasting flat roofing starts with a full system approach — not just laying down a membrane. Our crews handle every detail that matters to keep your low-slope roof watertight, well-drained, and code-compliant.

What’s included in every TPO project:

  • Substrate evaluation and prep for adhesion or mechanical fastening
  • Custom tapered insulation design for proper drainage
  • Hot-air welded seams with precision detailing
  • Flashing around curbs, skylights, chimneys, and edge transitions
  • Perimeter term bars, edge metals, scuppers, and downspout integration

Why Choose Us for Your TPO Roofing Project

TPO roofing demands more than a “flat roof guy.” Our crews are steep-slope trained and flat-roof certified — meaning you get clean installs, zero shortcuts, and a roofing partner who treats every detail as mission-critical.
  • Full tear-offs, overlays, and new installations
  • Detailed water flow design to prevent ponding
  • Seam inspections and thermal imaging (upon request)
  • Site supervision, daily updates, and final walkthroughs
  • Lifetime workmanship warranty on every project
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Why TPO Is a Smart Choice for Midwest Homes & Buildings

A house featuring a cedar roof and black shutters, showcasing a classic and stylish exterior.

All-Season Weather Resistance

TPO is UV-stable and remains flexible through Midwest freeze-thaw cycles — ideal for garages, dormers, porches, and flat additions.

Energy-Efficient & Reflective

TPO’s bright white surface reflects sunlight, reducing heat absorption and helping lower cooling bills in the summer.
A residence with a cedar shake roof and a white trash can placed next to it.

Low Maintenance, Long Life

Properly installed, a TPO system can last over 25 years with minimal upkeep — just periodic checks and seal maintenance.

Budget-Friendly & Fully Customizable

TPO offers a strong value per square foot, especially with a contractor that knows how to design the insulation layout, tie-ins, and transitions right the first time.
A large home with a spacious driveway, surrounded by greenery and a clear blue sky.

Works With Skylights, Gutters & Other Systems

We integrate edge metal, scuppers, gutters, and curb flashings with precision — ensuring the whole envelope works together, not against itself.
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“Flat Roofs Succeed or Fail at the Details. And We Don’t Miss Details.”

Every seam, edge, and corner is your roof’s first defense against water. That’s why we apply the same meticulous standards to TPO that we bring to high-end cedar, slate, and copper.

  • 50+ Years of Roofing Experience
  • Dedicated Site Supervision
  • Trusted by Builders, HOAs & Architects
  • Backed by Our Lifetime Workmanship Guarantee
Get Your Free Estimate

About Custom Installations, Inc.

We’re a second-generation, family-operated company built on one core belief:

Craftsmanship matters. Always has, always will.

With deep roots in Chicagoland and Metro Milwaukee, our team has served homeowners, architects, and builders since 1969. From small repairs to historical restorations, we deliver consistent, high-quality results.

Masterson Cedar Shake

Our Completed Projects

Explore our past work in your neighborhood.
Explore Our Gallery

Hear From Homeowners Like You

Discover what real homeowners are saying about their experience with us. From start to finish, our team is committed to delivering quality, reliability, and results you can trust.

More reviews

Greta Harrris

John Robinson & crew was a pleasure to work with: very professional, respectful & competent. They kept me informed of their work schedule at all times & even went the extra mile to address a vent issue that I did not know I had. I would highly recommend using Custom Installations for their quality of work & making the customer feel at ease answering every question. Very satisfied.

Carol Ann B.

My garage I had vinyl siding was done in one day . They did a great job I am so happy i had it done. the crew were working hard all day and the project manager, John Robinson, came often to check on the work. I will recommend this company to my friends.

Jonathan J.

John Robinson at Custom Installations was a pleasure to work with from beginning to end. He was extremely responsive, collaborative and nice, which is rare these days. His team worked diligently for nearly a month. Overall, it was a great experience to work with John and his team at Custom Installations.

Denali

Had Custom installations redo the entire exterior,(hardie board) roof, and gutters of our home and the results were great! Very professional and organized. Whenever I had a concern or question, my point of contact and project lead, John was an invaluable resource and took care of any issues or questions immediately. I was very impressed with his knowledge and ability to communicate my concerns and wants to whatever crew was working for the entirety of the project. Would definitely recommend and use custom installations on future projects.

Ryan Chitwood

I was in need of a metal crew that could do very high end copper work and was recommended this company by a major national player that owns a company in Denver, Co. The people at Custom Installations were amazing from start to finish, literally. They traveled here during the week for work and were so careful and respectful. Their copper/metal work is as good as I have ever seen. They just completed the most beautiful roof we have ever done for a homeowner. Their communication was fluid and consistent and we had zero issues. For a job with a ticket that size, we needed this to be a smooth process and Custom Installations Inc knocked it out of the park for us. Thank you guys!

Rob

Custom Installation was great to work with through this whole process. From the beginning, Ted Aydt Was very professional and thorough with the bid and immensely helpful with the insurance issues. On the job, the whole crew was great and so respectful. John Robinson was The project manager and always kept us up-to-date as did the office staff. I would definitely recommend them for your roofing job.

Will Lynn

Our old siding and part of our garage where damaged due to a storm which resulted in our house needing to be completely re-sided and part of the garage roof replaced. We chose Custom Installation not only for the quality of their work but their skilled teams knowledge of insurance claims. Bruce truly made this entire process as smooth as possible. We could lot be happier with how our house turned out.

Jacob Rosenfeld

We just hired Custom Installations to re-side & re-roof my home. We chose James Hardie, Board & Baton siding. The Custom Installations team was awesome, from my sales contact, Brad Hironimus, to the installers. Despite the house being originally constructed in the 1960's, it now looks brand new and I expect will further stand the test of time. The foreman assigned to our job, John Robinson, was exceptional. He was extremely responsive and always arrived on site with a great attitude. Whenever I had questions or concerns, he was easy to reach and successfully drove the team into delivering a fantastic result. I would definitely refer the Custom Installations team to anyone looking to improve their home.

Robert Tschurtz

We recently had a new asphalt roof installed on our residence here in Wisconsin. Mr. Pohlman and his crew were professional, timely, and exacting in the quality of their work. The project started and ended on time with no issues. Our property was left in the same condition as when they started. Mr. Pohlman was always available by email and personal cell phone for any questions, and personally on site. Overall, an excellent experience all the way around. Very rare these days.

Brett Paschke

The roof looks great and communication from Kevin and team was excellent throughout. Bob and the onsite team were up on the roof in below zero weather getting the job done.

David Held

Danny was able to arrange for contractor to remove the solar panels. He and his crew did a great job reroofing our home.

Jonathan Jonas

John Robinson at Custom Installations was a pleasure to work with from beginning to end. He was extremely responsive, collaborative and nice, which is rare these days. His team worked diligently for nearly a month. Overall, it was a great experience to work with John and his team at Custom Installations.

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What Homeowners Ask Us Most

How long does a TPO roof last?

A properly installed TPO system can last 20–30 years with minimal maintenance. Longevity depends on the quality of installation, drainage planning, and regular inspections for seam integrity.

TPO offers better energy efficiency thanks to its reflective surface and heat-welded seams for added durability. It’s a great choice for clients prioritizing performance and long-term value in flat or low-slope areas.

TPO is ideal for residential applications like flat-roofed additions, garages, and porches — anywhere shingles won’t work. It’s durable, clean-looking, and compatible with other roofing and gutter systems.

We treat TPO like we treat cedar and slate — with expert-level detailing. That means custom insulation layouts, precision flashing, edge metals, and daily oversight by certified crews and a Site PM.

Yes. TPO’s white, reflective surface helps reduce heat absorption, keeping your interior cooler in the summer — which can lead to noticeable savings on your HVAC costs.

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Got More Questions?

We’re here to help. Whether you’re unsure about roof types, warranty details, or what to expect during installation—we’ll walk you through it all with zero pressure.
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Find Out If We Service Your Area

Custom Installations, Inc. proudly serves homeowners, builders, and property managers across Chicagoland, Metro and Milwaukee.

Primary Service Areas:

Illinois

Wisconsin

Map of the United States featuring the Midwest, with a focus on Wisconsin and Illinois highlighted.

937 Campus Drive, Mundelein, IL 60060

10936 N Port Washington Rd, Suite 343
Mequon, WI 53092

Give Us a call.

Want answers fast? Talk directly with our team — no call centers, no runaround. We’re here to help with quotes, questions, and urgent service needs.

847-932-4500

We’ll call you.

Prefer we reach out? No problem. Just share your info and we’ll give you a call — usually within the same business day.

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Custom Quote

Tell us a bit about your project and we’ll send you a detailed estimate — no pressure, no obligation. Just clear, honest pricing from people who know what they’re doing.
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Where Integrity Meets Expertise

Serving Chicagoland & Milwaukee Since 1969

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Business Hours
  • Monday to Friday | 7:00am - 5:00pm
  • Saturday | 8:00am- 12:00pm

Business Hours

  • Monday to Friday | 7:00am - 5:00pm
  • Saturday | 8:00am- 12:00pm

FAQ's Form

Can’t find your answer? Send us your question below.

By clicking "Submit Question", you agree to have Custom Installations contact you about a free estimate and keep you informed about sales in the future. We may use an auto-phone system to contact you by phone or text. You do not need to make a purchase or submit this form but instead can call (847) 932-4500 to arrange for a free estimate. Please be aware that all calls are recorded for quality and safety purposes. Privacy Policy
847-932-4500
Get A Quote

Free Estimate!

No spam. No obligation. Just straight answers and a clear quote.

By clicking "Submit", you agree to have Custom Installations contact you about a free estimate and keep you informed about sales in the future. We may use an auto-phone system to contact you by phone or text. You do not need to make a purchase or submit this form but instead can call (847) 932-4500 to arrange for a free estimate. Please be aware that all calls are recorded for quality and safety purposes. Privacy Policy