TPO Roofing in Green Bay, WI

TPO stands for thermoplastic polyolefin, one of the fastest-growing single-ply membranes in the commercial roofing world. It is a flexible sheet manufactured from a blend of polypropylene and ethylene-propylene rubber, reinforced with a polyester scrim for strength. The result is a lightweight, weldable membrane that rolls out across a flat or low-slope deck and forms a continuous, watertight barrier.

What sets TPO apart from older systems is how the seams are joined. Instead of adhesives or tapes that can dry out, the overlapping edges are fused together with hot air. That heat-welding process is the heart of a durable single-ply roof, and it is why TPO has become the default choice for so many flat roofing projects across Northeast Wisconsin.

On a TPO roof, seams are not the weak point. They are the strongest part of the assembly. Our crews use robotic and hand-held hot-air welders to melt the top and bottom sheets together at the overlap, creating a monolithic bond that is often stronger than the field of the membrane itself. There is no glue to degrade and no lap to peel back, which is a major reason TPO holds up so well in a climate that swings from summer heat to deep-freeze winters.

There is no single right way to attach TPO. The best method depends on your building's deck type, slope, height, and exposure. As a certified single-ply installer, Michael Pierce evaluates each roof before recommending a system.

• Mechanically attached: The membrane is fastened to the deck with plates and screws along the seams. It is efficient, cost-effective, and popular for large commercial roofs.
• Fully adhered: The membrane is bonded to the substrate with adhesive for a smooth, wind-resistant surface that stays put in high-exposure locations.
• Ballasted: The sheet is laid loose and held down with river rock or pavers, a good option on structurally sound decks where speed matters.

Whichever route fits your project, proper flashing, edge detailing, and welding are what separate a roof that lasts decades from one that leaks early. That craftsmanship is why every job carries our 10-year workmanship warranty.

The most common question we hear about single-ply roofs is how TPO compares to EPDM roofing. Both are proven flat-roof membranes, but they behave differently. EPDM is a black synthetic rubber known for its long track record and flexibility in cold weather; its seams are typically joined with tape or adhesive. TPO is white and reflective, and its seams are heat-welded rather than glued.

If reflectivity and summer energy savings top your list, TPO usually wins. If you want a rubber membrane with a decades-long history and are less concerned about heat gain, EPDM may be the better fit. Both are worth considering for any rubber roofing conversation. During a free estimate we walk you through the trade-offs for your specific building rather than pushing a one-size-fits-all answer.

Northeast Wisconsin puts a roof through everything: heavy snow loads, freeze-thaw cycles, ice, wind off the bay, and hot, humid stretches in July. TPO handles that range well. The welded seams stay watertight through expansion and contraction, the reflective surface reduces summer heat, and the membrane's flexibility tolerates the cold without cracking. For commercial owners, TPO is a leading pick for a commercial roofing system, and it works equally well on low-slope residential additions and porches.

Whether you need a fresh installation, a full commercial roof replacement, or you are weighing your options for an aging flat roof, Pierce Roofing brings 30-plus years of experience, Atlas PRO+ Platinum certification, and $2 million in insurance to every project. Reach out through our contact page or call (920) 609-8304 to schedule a free estimate.