Strong, smart, and sustainable, Prolam’s innovative glulam bracing portal, the PLX Portal, is helping shape Architectural Designer Bob Burnett’s low-carbon development, Ngā Whare Pārara Somerfield Superhomes. The project features four homes, including one designed to become New Zealand’s first carbon-zero Superhome.

The Principal of Bob Burnett Architecture and founder of the Superhome Movement Charitable Trust, Bob has championed energy-efficient, environmentally responsible architecture for over two decades. His latest project in the Christchurch suburb of Somerfield also reflects his passion for innovation, incorporating advanced engineered timber solutions.

As Bob explains, his ethos is simple: “I aim to create awareness of homeowners and inspire and educate the industry on how to create climate-positive and energy-positive homes. By thinking holistically and prioritising thermal performance and sustainability, we can build homes with a reduced environmental impact that provide better liveability and comfort.”

The PLX Portal from Prolam, a hybrid timber and steel bracing solution, was a natural fit for the project, given its lower carbon footprint compared to traditional steel solutions. It will feature in three of the townhouses, including the two-storey carbon-zero home where a ‘double’ portal will support the mid-floor. Prolam beams and posts will also be featured in the design of a pergola for the flagship carbon-zero home.

John Woodman, Prolam’s Managing Director, explains: “The PLX Portal’s design features a flat steel bar inserted in the top and bottom timber laminates, providing extra strength, span and load-bearing capabilities. It connects directly to roof and wall framing members and base and knee fixings are neatly contained for a compact bracing solution.”

John says this makes the PLX Portal ideal for supporting large openings in homes without sacrificing thermal performance.

In September 2024, Prolam registered an Environmental Product Declaration (EPD) for the PLX Portal, providing transparent and independently verified information on the product’s environmental impact over its life cycle.

With construction set to begin in late 2024, the Ngā Whare Pārara Somerfield Superhomes project will set the benchmark in low-carbon design, demonstrating how thoughtful design and innovative materials like the PLX Portal can drive sustainable construction forward in New Zealand.