When planning a commercial roofing project, understanding the installation process is just as important as choosing the right material. Silicone roof coatings and TPO roofing each offer their own advantages, but they require different methods, equipment, and timelines to complete. Here’s how the two systems compare during installation.
Preparation Requirements for Each System
Silicone Coatings:
Silicone roof coatings are most often used as a restoration system. Preparation involves cleaning the roof surface thoroughly—usually with a pressure washer—and making minor repairs. As long as the existing roof is dry and structurally sound, there is usually no need for a tear-off.
TPO Roofing:
TPO is typically used in full replacements or new construction. Preparation often includes tearing off the old roof, repairing or replacing the decking, and installing new insulation. This makes TPO installation more labor-intensive and time-consuming.
Equipment and Application Techniques
Silicone Coatings:
Silicone is applied as a liquid using rollers or spray equipment. It conforms to the shape of the existing roof and forms a seamless waterproof membrane. The tools required are minimal, and application can be completed by smaller crews.
TPO Roofing:
TPO comes in rolls that must be cut, positioned, and fastened or adhered to the roof deck. Seams are heat-welded using specialized welding tools to create a watertight seal. This process requires skilled labor and more advanced equipment.
Installation Timeframe and Labor Involvement
Silicone Coatings:
Because there’s no tear-off, silicone projects are typically completed faster. Labor needs are lower, and application can often be finished in just a few days depending on the size of the roof.
TPO Roofing:
TPO installations take longer due to multiple layers (decking, insulation, membrane) and detailed seam welding. Larger crews are required, and the timeline may stretch over a week or more for medium to large buildings.
Disruption to Building Operations
Silicone Coatings:
One of the biggest benefits of silicone is that it causes minimal disruption. Since there’s no demolition and fewer materials involved, most businesses can remain open and operational during the process.
TPO Roofing:
TPO installation is more disruptive due to tear-off, equipment use, and crew size. Depending on the building type, occupants may experience limited access, noise, or temporary closures in certain areas.
Need for Tear-Off or Roof Removal
Silicone Coatings:
Usually applied directly over an existing roof, silicone coatings eliminate the need for a full tear-off, saving time, labor, and disposal costs.
TPO Roofing:
TPO typically requires full tear-off to ensure proper installation of the membrane and insulation system. This adds to project costs and may increase downtime.
Curing Time and Weather Sensitivity
Silicone Coatings:
Silicone begins curing immediately after application and typically takes 8–24 hours to fully set. It’s moisture-resistant and can be applied in slightly damp conditions, offering more flexibility in scheduling.
TPO Roofing:
TPO doesn’t require curing but is sensitive to environmental conditions. Adhesives and seam welding work best in dry, moderate weather, making scheduling more critical in variable climates.
Conclusion:
Silicone roof coatings are ideal for quick, low-disruption roof restorations, especially when your existing roof is in decent shape. TPO roofing is better suited for new construction or full replacements that demand a complete, multi-layered roofing system. Your building’s needs, timeline, and budget will determine which installation process is the right fit.
Ridgeline Roofing and Solar offers expert installation of both TPO and silicone systems across Joplin, MO, Bentonville, AR, and Grove, OK. Contact us today for a FREE quote and personalized guidance on the best roofing solution for your property.