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Mendocino Transit Authority Bus Maintenance Facility

Kingspan Insulated Panels – North America

With its vehicles logging almost 900,000 miles annually, it is imperative that the Mendocino Transit Authority (MTA) in Northern California have a state-of-the-art shop to keep its buses running in top shape. In August 2012, the Mendocino County agency dedicated its new bus maintenance facility in the county seat of Ukiah. The 17,196-square-foot structure features maintenance bays along with fueling and vehicle wash areas, plus storage space. While the activities performed inside may seem ho-hum, the same cannot be said of the facility’s exterior, which includes insulated metal roof and wall panels from Kingspan Insulated Panels.

Award Winner

A trio of sloped roofs gives the facility a sense of motion while north-facing, above-eye-level windows allow outside light to pour into the interior space but without excess. The building earned a 2012 AIA Redwood Empire Chapter honor award in the “Built Project” category.

“The project was designed to minimize operational and maintenance costs, and to provide a strong visual presence from the adjacent freeway,” notes the website for TLCD Architecture, the Santa Rosa, California-based firm responsible for the building’s design.

Division 13 Buildings, Inc., of Windsor, California, addressed such concerns when it installed 6-inch KingZip™ insulated roofing panels and KS Optimo™ insulated wall panels as part of the project. Division 13 President and Owner Marc Davis said his team worked on the job site for three months. 

“As you can see from the photos, the building was basically built in three single slope roof lines, just to add contrast and look to it,” said Davis, whose company specializes in pre-engineered metal buildings. “The walls were flat metallic silver with trim-less ends and joints. And other materials were integrated into the walls such as CME block, and the front elevation has wood siding.”

IMPs Offer ‘Architectural Appeal’ and More

Davis said Kingspan products were ideal for the maintenance building because of the panels’ durability, high insulation values, ease of installation, and eye-catching finishes.

The KingZip™ standing seam insulated metal roof panel combines impressive R-values with low thermal bridging and superior airtightness. This can reduce energy consumption in buildings by nearly a third when compared to standard cavity insulation systems. Not only that, but KingZip’s single-component system yields installation times that are nearly half that of multi-part roofing systems.

Kingspan’s Optimo™ insulated wall panels also are single-component products and offer the same energy-efficiency benefits provided by KingZip™. Davis added that Optimo™ wall panels contributed greatly to the “architectural appeal” of the MTA project.

“It’s a good-looking structure,” he said.

Insulated metal roof and wall panels consist of a simple yet smart design. They are made from an insulated foam core material sandwiched between two metal skins. The panels easily interlock with one another, forming a weather-resistant seal. Their popularity is on the rise in California. “With new energy requirements,” Davis said, “(IMPs) are going to become more of the norm.”

TLCD Architecture notes that the insulated metal roof and wall panels attached directly to the metal structure of the bus maintenance facility. The firm says the IMPs are a good alternative to a traditional stud wall.

“These panels do not require painting or maintenance and are one of the many sustainable features of this project,” TLCD writes of the MTA job. “The metal panels sit on a base of patterned concrete block walls that provide protection from vehicles.”

Kingspan’s IMPs, it seems, will help keep the wheels of the coastline county’s buses going ‘round and ‘round for years to come.

About Kingspan Insulated Panels - North America


Kingspan Insulated Panels – North America is a business unit of Kingspan, a global company operating in more than 80 countries, with over 200 manufacturing facilities. Kingspan Insulated Panels – North America manufactures and markets three groups of products at its U.S., Canadian and Mexican facilities: insulated metal wall and roof panel systems for commercial/industrial construction; insulated architectural panel and façade systems for design-driven projects; and controlled environment panels and doors for cold-storage and climate-controlled warehousing. In addition to its commitment to quality and innovation, the company is on the leading edge of the sustainability movement, offering best-of-class products produced in state-of-the-art, eco-friendly facilities. To learn more visit

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