What Is TPO?
TPO, short for thermoplastic polyolefin, is a flexible white single-ply sheet made by fusing rubber-like polymers around a reinforcing scrim. Rolls arrive up to 12 ft wide in 45, 60, or 80 mil thicknesses, and installers heat-weld the edges until the roof becomes one seamless skin.
Installed to spec, a 60 mil TPO roof averages 20 to 25 years of service; 80 mil sheets plus a mid-life acrylic refresh can stretch that toward 30. The plastic stays supple below −40°F and shrugs off Lake County’s freeze–thaw cycles, so welds move with the sheet instead of cracking.
Most buildings can recover an existing roof with TPO. We fasten a ½ in gypsum cover board through the old system, then weld the new membrane. This choice avoids tear-off mess and landfill fees. The finished assembly meets Class A fire ratings when that cover board (or another non-combustible deck) is in place.
The bright surface keeps AC loads low, yet it will collect dust and pollen. A gentle rinse every other spring, plus an optional acrylic top-coat at year 10, restores reflectivity. Standard TPO passes a 2 in hail-impact test; thicker, impact-resistant sheets are available in storm-prone zones. The cool white layer also keeps rooftop solar arrays a few degrees cooler, nudging panel efficiency upward.
Benefits of TPO Roofing
Bright, Tough, and Built to Last.
Lower Energy Bills
White surface reflects heat, trimming summer HVAC demand by up to twenty percent and easing tenant comfort.
Watertight Seams
Hot-air welding fuses overlaps into one sheet, forming joints three times stronger than taped seams and blocking leaks.
Light Structural Load
Sixty-mil material adds just one third pound per square foot, avoiding expensive deck upgrades during recover projects.
Fast Quiet Installs
Wide rolls cover large areas quickly, and flameless hot-air tools limit noise, odors, sparks, and business interruption.
Easy Upkeep & Repair
Most dirt rinses away, while small cuts patch in minutes with welded squares and zero special chemicals.
End-of-life Recycling
Retired sheets grind into pellets for walk pads and new roofs, diverting waste from landfills and reducing costs.
Installation Paths
How to Anchor a TPO Roof the Right Way
Pick the Best Fit for Wind, Weight, and Budget.
- Mechanically Attached
Fasteners with barbed plates screw through the membrane laps and into the deck, then the next roll’s edge is heat-welded over the plates.
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Best for: wide, open roofs where wind uplift is the main concern (distribution centers, big-box retail).
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Strengths: quickest dry-in speed; lowest material cost; easy to inspect and re-tighten fasteners later.
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Trade-offs: thousands of fastener penetrations can transmit outside noise and minor heat loss; lap rows remain slightly raised, so foot-traffic paths may need extra walk pads.
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- Induction Welded
Crew drives coated fasteners through insulation plates, lays the membrane loose, then uses an induction tool that heats the plate through the sheet—fusing plate to membrane without a seam weld at that point.
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Best for: sites that want the wind resistance of mechanical attachment but a cleaner look and fewer lap rows (schools, offices, data centers).
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Strengths: 25 – 50% fewer fasteners than conventional attachment; no perimeter adhesives; membrane lies flatter with fewer weld lines.
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Trade-offs: specialized tools add setup time; plates must hit a precise grid to match uplift calculations.
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- Fully Adhered
Low-VOC bonding adhesive is rolled or sprayed onto the cover board; the membrane is broomed into the wet glue, then seams are heat-welded.
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Best for: buildings where interior noise/vibration is a concern or where uplift loads are extreme (hospitals, mid-rise offices, hurricane zones).
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Strengths: smooth aesthetic, zero flutter in high winds, no fastener “telegraphing” through the sheet, excellent edge pull-off ratings.
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Trade-offs: adhesive adds cost and extends install time; requires dry, mild weather for full bond; substrate must be very smooth.
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- Ballasted
Sheets are loose-laid, seams are spot-welded for continuity, and rounded river rock or concrete pavers (10-12 lb/ft²) hold everything down.
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Best for: large roofs hidden from street view where speed and low labor trump weight (warehouse campuses, low-rise malls).
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Strengths: fastest installation, fewest welds, ballast dampens rooftop noise and protects sheet from UV.
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Trade-offs: adds significant dead-load weight; not suitable for lightweight metal decks or seismic zones; future HVAC work requires shoveling stone.
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Our TPO Project Roadmap
Your TPO Project in 3 Steps
Scan and Plan
Same-day drone and thermal scan measure the roof, locate every wet cell, and record all curbs, skylights, and wall heights. You receive a link to a 3D roof model within 24 hours.
Design and Decide
You review a 48-hour proposal that shows fastener layout, uplift rating, color render, and two price options based on sheet thickness. A simple accept button sends materials to order.
Install and Certify
Crews remove bad layers, set gypsum cover board, roll out new membrane, and weld laps. A field tech pulls test welds every hour and logs temps in the weld log. After final probe tests, we file the manufacturer warranty and share before-after drone shots.
Is TPO the Right Choice?
Choose TPO When Your Roof is:
- Flat or low-slope – ¼ inch per foot or less.
- Standard occupancy – offices, stores, schools, distribution, or light manufacturing.
- Seeking lower cooling costs without full tear-off.
Consider Other Systems if:
- Kitchen or plant vents push heavy grease or strong acids. PVC handles chemicals better.
- Roof hosts steady foot traffic with carts or heavy tools. Modified bitumen or BUR handle point loads best.
- Local code limits reflectance due to nearby air traffic. Darker EPDM may meet that rule.
The Cittrix Difference
- Fast, Convenient Estimates
Call or submit a form and we’ll schedule a free inspection of your roof for the same or next business day. There’s no need for you to disrupt your busy schedule - you don’t even have to be at home.
Instead of sending a confusing estimate or sitting in your living room for hours with a high-pressure sales pitch, we’ll send you a clear video explanation of what’s going on with your roof and our recommendations that you can watch on your own time.
- Quick Turnaround and Guaranteed Timelines
Roof installation is scheduled and completed within ten days of approval—no delays, no surprises, just reliable scheduling you can count on.
- Flexible Financing Options
We offer simple, clear-cut payment options, including 0% financing with zero money down, making it easy to get the high-quality roof your family needs.
- Trusted Team of Professionals
We’re proud to work closely with leading manufacturers, ensuring every roof we install is the highest quality. Our crews are experienced, respectful, and held to the highest standards in the industry—because your home deserves the best.
- Malarkey Emerald Premium Certified Contractor
- Proud Member of the Roofing and Solar Reform Alliance
- A+ rating with the Better Business Bureau
- HAAG Certified Roof Inspector
- 5-Star Google Rating
- 5-Star Thumbtack Professional
- Lifetime Roof Warranties
We stand behind our work with robust warranties that cover labor and materials, offering long-term protection and peace of mind.
- Speedy Cleanup and Safety Precautions
Our teams take extra care to minimize disruption and keep your family and pets safe during every step of the process.
- Locally Owned, Family-Run Business
Based in Buffalo Grove, Illinois, and serving neighbors throughout Lake County and the Chicago suburbs, we’re proud to serve our local community with integrity, hustle, transparency, and heart.
We’ll do everything in our power to ensure you’re informed and confident through every step of the process and will always make recommendations based on what’s best for you. We’re humbled by the positive feedback we’ve received from thousands of happy customers and look forward to serving you and your family.
Trusted By Over 10,000+ Satisfied Customers
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