Surrey Quays Station Upgrade

This project involved designing and constructing a distinctive two-stepped roof structure for the new Platform 2 entrance at Surrey Quays Station as part of a major station upgrade. The roof features straight glulam European Larch beams arranged in an elegant lattice pattern on the upper level, creating both structural integrity and visual interest. The lattice framework supports a European Spruce CLT deck that will eventually accommodate a green roof system. The lower roof utilises the simplicity of parallel straight larch beams and also has a CLT deck.

The most challenging aspect of this project was the precision engineering required for the lattice construction. Every beam connection utilised traditional tenon and mortise joints with zero tolerance, demanding meticulous prefabrication and planning. To ensure a perfect fit during the critical installation window, the entire lattice roof was dry-fitted off-site before delivery, as there would be no opportunity for on-site adjustments.

The installation itself was executed during a continuous 52-hour rail closure weekend, requiring careful coordination and flawless execution. Prior to construction, the entire structure was treated with Nord Treat NT Deco, a clear, fire-retardant finish that required highly controlled application conditions. The bottom shed was completely cleared to create the controlled environment necessary for its application. .

To ensure long-term performance, moisture sensors were strategically installed throughout the CLT deck to monitor the roof’s condition over time, particularly important given the planned green roof installation. The combination of traditional joinery techniques, modern engineered timber, and advanced monitoring systems creates a structure that bridges heritage craftsmanship with contemporary performance requirements.