Originally developed for car interiors, TPO roofing has become the top choice for commercial and residential flat roofs. Its durability, energy efficiency, and cost-effectiveness make it ideal for property owners looking to extend their building’s lifespan while lowering utility costs.
TPO Roof Installation at Methodist Hospital Specialty and Transplant
Rhino Roofers, a trusted commercial roofing contractor in Texas, was selected for this project due to its reputation for high-quality installations and expertise in energy-efficient roofing solutions.
Located in the Medical Center of San Antonio, Texas, the Methodist Hospital Specialty and Transplant required a roof upgrade that would minimize disruptions to hospital operations while withstanding the extreme South Texas heat, severe hail storms, and winter freezes. The project demanded precision, durability, and energy efficiency.
Transitioning from Built Up Roofing (BUR) to TPO
The original roof was a built-up roof (BUR) system with tar and gravel. It had reached the end of its lifespan, making a modern, energy-efficient TPO system the ideal replacement. Before installation, crews vacuumed off the gravel to prepare the surface.
The new system consists of:
- Flexible DASH Adhesive
- ISO insulation
- CAV-GRIP primer
- TPO membrane with heat-welded seams
This combination ensures a watertight, long-lasting roofing system that enhances energy efficiency.
“We glue the entire system down,” said Rodriguez. “First, we adhere the ISO board, then apply the TPO membrane for a seamless, waterproof system.”
Not all projects require adhered insulation. Some use mechanically fastened ISO boards, where screws secure the insulation instead of adhesive.
For this hospital project, Rhino Roofers selected Flexible DASH Adhesive because the concrete roof decking prevented the use of mechanical fasteners.
“It takes about four hours to set up to where you’re not going to be able to pull that off the roof,” Rodriguez added.
Discover more about Flexible DASH Adhesive and its benefits for TPO roofing: Versico.
Why Choose TPO Roofing?
TPO, or thermoplastic polyolefin, is a single-ply roofing membrane designed for high reflectivity, durability, and waterproofing.
“TPO withstands water,” said Rodriguez. “It started as a pond liner, so it holds up to pooling water better than many traditional roofing materials. Plus, its white surface reflects heat, cutting energy costs.”
For businesses looking to lower cooling costs, extend roof lifespan, and protect their property, TPO is a proven choice in extreme climates like Texas.
Learn more about TPO roofing by visiting our TPO roofing services page.
A Smarter Installation Process
Traditional built-up roofs (BUR) required hot asphalt kettles, open flames, and extensive labor. The process was not only time-consuming but also produced strong fumes that could spread into the building—a major concern for hospitals and commercial facilities.
Modern adhered TPO systems eliminate these risks while streamlining the installation process.
“TPO installation follows two main methods: fastening or adhering.” – Gus Velez
With a BBA from Texas A&M Corpus Christi and eight years in construction production management, Velez emphasized that adhered TPO systems also save time and labor.
“Using a two-part polyurethane foam adhesive increases the R-value,” Rodriguez explained. “We apply it in ribbons, allowing it to rise and set before laying in the poly ISO. This process secures the insulation while improving energy efficiency.”
TPO Roofing Factoids
What is a Class 4 Hail Rating?
A Class 4 Hail Rating is the highest impact resistance level for roofing materials under UL 2218 standards. TPO membranes with this rating can withstand hailstones up to two inches in diameter without significant damage. (Source: GAF)
How Energy Efficient is TPO Roofing?
White TPO roofing can reflect up to 79% of solar heat, reducing the strain on air conditioning systems and lowering cooling costs. (Source: Holcim Elevate TPO Technical Information Sheet)
How Durable is TPO Roofing?
TPO membranes can withstand forceful impacts such as falling debris and hail. Some versions pass dynamic puncture tests equivalent to resisting a dropped steel ball from multiple feet in the air. (Source: Holcim Elevate TPO Technical Information Sheet)
Commercial Roof Maintenance Services
A quality roof is an investment, but proper maintenance is what ensures long-term protection.
Rhino Roofers provides commercial roof maintenance services to prevent costly damage and extend roof life. The Rhino Roofers Maintenance Team performs routine inspections and maintenance on commercial roofing systems to help property managers avoid unnecessary repairs.
Rhino Roofers offers commercial roof maintenance services, including:
- Routine inspections to catch potential issues early
- Seam and flashing repairs to prevent leaks
- Gutter and drainage cleaning to prevent water buildup
For a complete overview of our commercial roofing expertise, visit our Commercial Roofing Services page.
How Durable is TPO Roofing?
TPO membranes can withstand forceful impacts such as falling debris and hail. Some versions pass dynamic puncture tests equivalent to resisting a dropped steel ball from multiple feet in the air. (Source: Holcim Elevate TPO Technical Information Sheet)
- Fire Resistance: Some TPO membranes meet FM Global and ASTM E108 fire resistance standards, making them a safer choice for commercial buildings in fire-prone areas. (Source: GAF)
- Wind Resistance: TPO roofing systems can be designed to withstand uplift pressures of over 200 psf, making them suitable for hurricane-prone regions. (Source: Versico)
- Warranty Options: Many manufacturers offer extended warranties up to 30 years when the roofing system is installed according to best practices. (Source: GAF)
- Energy Efficiency: White TPO roofing can reflect up to 79% of solar heat, reducing the strain on air conditioning systems and lowering cooling costs. (Source: Holcim Elevate TPO Technical Information Sheet)
- Impact Resistance: TPO membranes can withstand forceful impacts such as falling debris and hail. Some versions pass dynamic puncture tests equivalent to resisting a dropped steel ball from multiple feet in the air. (Source: Holcim Elevate TPO Technical Information Sheet)
- Sustainability: Some TPO products include 15% post-industrial recycled content, making them a more environmentally responsible option for roofing. (Source: Holcim Elevate TPO Technical Information Sheet)
- Class 4 Hail Rating: Many TPO membranes meet UL 2218 Class 4 hail impact ratings, the highest rating for impact resistance. This means they can withstand hailstones up to two inches in diameter without significant damage. (Source: GAF)
Completed TPO roof installation at Methodist Hospital Specialty and Transplant in San Antonio, TX. This energy-efficient system enhances durability and weather resistance for the hospital.
Considering a TPO roofing system for your commercial property? Rhino Roofers specializes in durable, energy-efficient installations that stand up to Texas weather.
Get a free consultation today! Read more about TPO roofing.
About Rhino Roofers Commercial Roofing Services
Rhino Roofers has over 1,000 5-star Google reviews and holds an A+ rating with the Better Business Bureau (BBB), demonstrating our commitment to excellence and customer satisfaction.
As a top-rated commercial and residential roofing contractor serving San Antonio, Austin, and surrounding areas, Rhino Roofers specializes in:
- TPO Roof Installations
- Storm Damage Repair
- Long-Term Commercial Roof Maintenance
We have a proven track record of installing and maintaining commercial TPO roofs across Texas, ensuring long-term durability and energy efficiency for businesses.