The Heritage Sauna® Lux Stromboli Large is a 6–8 person outdoor sauna from the Architectural Series, sized for families and social gatherings. Its exterior is clad in Shou Sugi Ban charred spruce, a traditional Japanese charring technique that gives the wood a deep, obsidian finish that stands up to the weather. It is one of the few outdoor saunas in its class built with a true multi-layer wall assembly: the walls, roof and floor use a dedicated layer of high-performance PIR insulation for faster warm-up and steadier temperatures during year-round use.
Inside, bright aspen covers the walls, benches and floor with smooth, cool-touch surfaces, creating a striking "geode" contrast with the dark exterior. A vertical "soft cube" silhouette maximizes headroom. An expansive tinted tempered glass front connects the interior to the outdoors while maintaining privacy. Under-bench LED lighting adds a soft, warm glow, black bitumen tiles finish the roof, and epoxy floor paint seals the sub-floor against moisture. A reversible door and flat-pack delivery make placement easier in tight or hard-to-access areas. The sauna pairs with an electric heater (sold separately), with 9kW or more recommended.