CertainTeed stands out as a pioneer, especially with its innovative ONE PRECISION ASSEMBLIES™ (OPA™) system. This cutting-edge approach to building is redefining efficiency, quality, and sustainability in residential construction.
photos – OPA™ system
Understanding ONE PRECISION ASSEMBLIES™
Introduced in March 2023, the OPA™ system offers fully constructed wall, floor, ceiling, and roof panels that are prefabricated in a controlled environment. These panels are tailored to meet specific design requirements and local building codes, ensuring a seamless fit and compliance with regulations.
Key Features and Benefits of ONE PRECISION ASSEMBLIES™
1. Speed and Efficiency: Build Faster, Smarter
Traditional construction is often a game of waiting—waiting for subcontractors, waiting for materials, waiting for good weather. ONE PRECISION ASSEMBLIES™ flips the script. Because the components are built in a factory-controlled environment, multiple stages of construction happen simultaneously instead of sequentially. While a builder is preparing the site or pouring a foundation, the wall, roof, floor, and ceiling panels are being manufactured with precision.
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Once delivered to the site, the real magic happens: panels are craned into place and connected, allowing a home to be dried in within just 1–3 days. This rapid assembly process drastically reduces construction schedules, slashes labor costs, and gets homes to market faster—a big win in today’s competitive housing environment.
2. Quality and Precision: Built in a Factory, Not in the Mud
Building on-site always comes with a margin of error. Weather can affect material quality, subcontractor turnover can lead to inconsistent workmanship, and site conditions are rarely perfect. With OPA™, every component is built indoors using digital plans, automated tools, and trained technicians. That means tighter tolerances, better quality control, and fewer on-site surprises.
Each panel arrives straight, dry, and ready to install—no warped studs, no waiting for inspections before you can move to the next phase. This also helps eliminate time-consuming rework, which is one of the most expensive and frustrating aspects of traditional construction.
3. Energy Efficiency and Sustainability: Designed for Performance
One of the standout features of ONE PRECISION ASSEMBLIES™ is its built-in energy performance. Each panel comes with a “Performance Core” designed to meet or exceed energy codes in your region. This includes advanced insulation, moisture barriers, and air sealing—components that are difficult to install correctly on-site but easy to control in a factory.
For homeowners, this means lower energy bills, improved indoor air quality, and reduced maintenance from moisture-related damage. For builders, it simplifies the path to energy-efficient certifications such as ENERGY STAR, LEED, or local green building codes. It also aligns with broader sustainability goals, cutting job site waste and reducing the carbon footprint of each project.
4. Design Flexibility: Not One-Size-Fits-All
One of the misconceptions about panelized construction is that it limits architectural creativity. Not so with CertainTeed’s OPA™. These panels can be customized to fit a wide range of designs—from single-family homes to multifamily buildings and everything in between.
The exterior finishes are also flexible. Builders can choose from CertainTeed’s extensive catalog of siding and roofing products, including Monogram® vinyl siding for a classic look or Landmark® shingles for durability and curb appeal. This allows builders to maintain their brand identity and deliver on customer expectations—while still reaping the benefits of prefabrication.
5. Risk Mitigation: Fewer Surprises, More Control
Construction risk often comes from two places: unpredictable weather and unpredictable people. When you build outdoors with dozens of moving parts, it’s easy for timelines to stretch and budgets to swell. With OPA™, risk is significantly reduced.
Factory-made assemblies mean consistent timelines and reliable quality. Fewer trades are needed on-site, which reduces coordination challenges and liability exposure. Plus, since much of the building envelope is constructed in advance, there’s less opportunity for design drift, miscommunication, or scope creep. Developers and general contractors appreciate the predictability, and lenders and investors love the reduced financial uncertainty.
A Holistic Solution for Modern Builders
What makes CertainTeed’s ONE PRECISION ASSEMBLIES™ truly stand out is that it isn’t just a product—it’s a complete building solution. From the design phase to delivery and installation, the OPA™ system is engineered to bring together speed, accuracy, performance, and style in a single streamlined process. It takes the best of offsite construction—efficiency, precision, and innovation—and applies it to real-world building challenges without asking the builder to compromise on design or function.
In a time when skilled labor is scarce, housing demand is high, and environmental performance is more important than ever, solutions like OPA™ offer a path forward that makes sense for the industry—and for the planet.
Industry Recognition
The National Association of Home Builders (NAHB) recognized the innovative nature of OPA™ by awarding it the Offsite Construction Award for Innovative Product or Service in 2023. This accolade underscores CertainTeed’s commitment to advancing construction methodologies and delivering value to builders and homeowners alike. CertainTeed+2CertainTeed+2National Association of Home Builders+2
CertainTeed’s ONE PRECISION ASSEMBLIES™ system represents a significant advancement in residential construction. By integrating speed, precision, energy efficiency, and design flexibility, OPA™ offers a comprehensive solution that addresses many of the challenges faced by builders today. As the industry continues to evolve, innovations like OPA™ pave the way for more efficient, sustainable, and high-quality homebuilding practices.
About CertainTeed
Founded in 1904, CertainTeed is a leading North American manufacturer of building materials for both residential and commercial construction. With a commitment to innovation, sustainability, and performance, CertainTeed offers a comprehensive portfolio of products including roofing, siding, insulation, ceilings, and drywall. As a subsidiary of Saint-Gobain—one of the world’s largest and oldest building materials companies—CertainTeed continues to push the boundaries of what’s possible in modern construction, helping builders and homeowners create high-performing, comfortable, and sustainable spaces. Learn more at www.certainteed.com.
