Commercial TPO Roof Tie-In and Rooftop Equipment Patching in Phoenix, Arizona

This Phoenix, Arizona tenant improvement project involved tying new rooftop equipment into an existing commercial TPO roofing system. The work was needed to create clean, watertight transitions around new RTUs, relief vents, exhaust fans, and associated pipe jacks so the roof could continue protecting the building while supporting the updated mechanical layout.

Project At-a-Glance

• Property type: Commercial low-slope roof
• Roofing system: Existing TPO roof with TPO repair and patching
• Project type: Tenant improvement roof tie-ins for new rooftop equipment
• Equipment involved: RTUs, relief vents, exhaust fans, and associated pipe jacks
• City: Phoenix, Arizona
• Insurer: Not involved

Challenge: Integrating new rooftop equipment without compromising the existing TPO roof

Tenant improvement work often adds new penetrations and rooftop units that must be tied into the existing membrane with precision. On this Phoenix project, the challenge was making sure each new equipment location and penetration was properly integrated into the TPO roof so the finished assembly remained watertight, durable, and ready for long-term service.

The rooftop photos also show a large commercial low-slope roof with multiple units and penetrations, which increases the importance of consistent detailing and clean transitions at every curb, vent, and pipe location. The work had to support the building’s updated mechanical needs while maintaining the roof’s protective performance across the surrounding field membrane.

Solution: Targeted TPO tie-ins for a clean, watertight tenant improvement upgrade

Sunvek completed focused TPO roof repair and patching work tied to the new rooftop equipment layout in Phoenix. The scope centered on installing and tying in owner-supplied RTUs and furnishing and installing tie-ins for exhaust fans, relief vents, and associated pipe jacks at the existing TPO roof.

• Tied new owner-supplied RTUs into the existing TPO roof
• Installed and tied in exhaust fans and relief vents
• Completed TPO patching around associated pipe jacks and penetrations
• Performed clean integration work to support the updated rooftop mechanical system
• Maintained jobsite cleanliness and debris removal throughout the roofing scope

This approach allowed the roofing work to stay aligned with the tenant improvement scope while protecting the integrity of the existing low-slope system. Rather than a full replacement, the project focused on precise patching and tie-in work where the roof was affected by the new equipment installation.

Result: A roof ready to support new equipment with dependable protection

The completed work gave the property owner a practical way to accommodate new rooftop equipment without sacrificing the performance of the existing TPO roofing system. Proper tie-ins and patching around RTUs, vents, fans, and pipe penetrations help preserve watertightness, support drainage continuity, and reduce the risk of future trouble at some of the roof’s most vulnerable points.

Just as importantly, the project helped the building move forward with its tenant improvement goals with greater confidence. The result is a cleaner, more complete rooftop installation that supports both building function and peace of mind in Phoenix’s demanding commercial environment.

Trust & Proof: Documented scope and project photos that show the completed rooftop integration

The documented project scope confirms TPO roof repair and patching at RTUs, relief vents, exhaust fans, and associated pipe jacks, along with tie-ins for owner-supplied rooftop units at the existing roof. The uploaded photos show the completed commercial rooftop setting, including patched equipment curbs, penetrations, and multiple rooftop units across the low-slope membrane.

No manufacturer certification, third-party warranty, or customer testimonial was included in the materials provided, so those details are not included here. The available documentation supports this as a Phoenix, Arizona commercial TPO tenant improvement project focused on integrating new rooftop equipment into the existing roofing system.