Choosing between a silicone roof coating and a TPO roofing system isn’t just about cost or material—it’s also about how each system is installed. From preparation to curing time, these systems differ in complexity, disruption, and labor demands. Here’s what you need to know before starting your commercial roofing project.
Preparation Requirements for Each System
Silicone Coatings:
Typically applied to existing roofs in fair structural condition. Preparation involves cleaning, minor repairs, and possibly a primer coat. No tear-off is required in most cases, making prep faster and less invasive.
TPO Roofing:
Requires a more extensive prep process. This may include complete tear-off, installation of insulation boards, and a clean substrate. Substantial roof deck prep is often necessary before membrane application begins.
Equipment and Application Techniques
Silicone Coatings:
Applied using rollers or spray equipment. It’s a fluid-applied system that creates a seamless membrane. Equipment needs are minimal, and small crews can handle most applications efficiently.
TPO Roofing:
Installed in large sheets, which are fastened or adhered to the deck. Seams are heat-welded with specialized equipment. It requires more tools, training, and a larger team to ensure a durable and code-compliant finish.
Installation Timeframe and Labor Involvement
Silicone Coatings:
Quick to apply and ideal for tight deadlines. Smaller crews can complete most projects in days, not weeks. Labor costs tend to be lower due to reduced setup and faster application.
TPO Roofing:
Takes longer to install, especially with tear-off and insulation layers. The labor is more intensive and usually involves a full roofing crew to manage installation and seam welding.
Disruption to Building Operations
Silicone Coatings:
Minimal disruption. Since there’s no tear-off, the building can often remain fully operational during the project. Ideal for businesses that can’t afford downtime or debris-related interruption.
TPO Roofing:
More disruptive due to the removal of old materials and heavier equipment use. It may involve temporary closures or limited access, particularly for sensitive facilities.
Need for Tear-Off or Roof Removal
Silicone Coatings:
Rarely requires tear-off. They’re designed to go over existing roofing systems as long as the substrate is dry and structurally sound. This saves time, disposal costs, and landfill waste.
TPO Roofing:
Often requires full tear-off to meet local codes or prepare for insulation installation. This adds to the timeline, cost, and environmental impact of the project.
Curing Time and Weather Sensitivity
Silicone Coatings:
Require time to cure—typically 8 to 24 hours depending on weather. They are more tolerant of light moisture during application than many alternatives and can be installed under a wider range of conditions.
TPO Roofing:
Less dependent on curing time but sensitive to moisture during seam welding and adhesive application. Installation is best scheduled during dry, mild conditions to avoid issues with adhesion or safety.
Conclusion:
Silicone roof coatings offer a fast, efficient, and low-disruption installation ideal for restoring aging commercial roofs. TPO roofing, while more complex, is ideal for new builds or when a full roof system replacement is necessary. The right choice depends on your building’s current condition, budget, and tolerance for downtime.
Ridgeline Roofing and Solar provides expert installation for both silicone and TPO systems across Joplin, MO, Bentonville, AR, and Grove, OK. Contact us today for a FREE quote and let’s build a roofing solution that fits your timeline and budget.