Opus One Winery

The Opus One Winery is located in the vineyards near the town of Oakville in the Napa Valley. It consists of over 50,000sf of floor area devoted to bottling, cooperage, case storage, a wine library and administrative offices. MCA was retained to provide waterproofing and insulation design to solve a number of problems. In particular, the facility is constructed half underground to produce a constant temperature environment for aging wine, but required an unusual combination of heavy insulation with below grade waterproofing due to natural thermal springs nearby. Mixed occupancy (office and wine storage) required additional special insulation measures and techniques for reducing the buildup of moisture throughout the facility.