Allegrone Co. Begins Restoration of the Peabody Essex Museum's Yin Yu Tang House

February 28, 2025

The Yin Yu Tang house, originally built during the Qing Dynasty in China's Huizhou region, was carefully dismantled, transported overseas, and reassembled at the Peabody Essex Museum (PEM) in Salem, Massachusetts. Over the years, the house has faced challenges due to the frosty New England climate, which differs significantly from its original environment. Allegrone Co., along with John G. Waite Associates, has been involved in the ongoing preservation efforts.

The Yin Yu Tang house is a remarkable example of traditional Chinese architecture from the late 18th century, Qing Dynasty. The house belonged to the Huang family, who were prosperous merchants. The name "Yin Yu Tang" translates to "Hall of Plentiful Shelter," reflecting the family's hopes for prosperity and protection. The Yin Yu Tang house now serves as a cultural and educational exhibit, offering visitors a unique glimpse into traditional Chinese life and architecture. 

In 2023, JGWA and Allegrone Co. conducted investigative probes and removed areas of render from the walls to examine the underlying brick.  Our teams performed various tests to establish repair protocols, including salt and moisture tests on the render coating, and tested cleaning products to reduce salt levels.  Subsequently, mockups were created to evaluate the effectiveness of these methods and materials.

(Photos courtesy of Peabody Essex Museum)

The roof restoration of the Yin Yu Tang house at the Peabody Essex Museum has been a meticulous process. The house features a roof made of soft-fired clay tiles. Over time, the New England climate, with its freeze-thaw cycles, has caused some of these tiles to crack and break. Taking samples of the original Yin Yu Tang tiles, the UK-based manufacturer Dreadnought Tiles produced reproductions of the 18thcentury tiles, identical in color and shape. Approximately 47,200 tiles were produced to last through the current preservation project and future repairs. Work began earlier this year and estimated to be completed in 2026. 

These efforts are crucial to maintaining the structural integrity and historical authenticity of Yin Yu Tang, ensuring it remains a valuable cultural artifact for future generations.