Holy Cross Mission: Baptismal Font Restoration
The Holy Cross Mission is the historic nucleus and namesake for the modern city of Santa Cruz, California. It was originally founded in 1791 by Father Fermín Lasuén and still contains many historic artifacts from that era. One of these, a late 18th century baptismal font carved from Spanish limestone, was the subject of this restoration.
Prior to this restoration, the font had been located outdoors in a walled garden area. Due to the effects of weathering and groundwater, there was a significant amount of erosional damage. This was compounded by previous applications of a non-breathable coating that trapped water inside the stone. There was also significant biological growth and soiling. Additionally, in March 2012, the font was vandalized with spray paint and knocked over. This impact broke the bowl of the font into 24 separate pieces of various sizes.
The broken pieces of this font were carefully numbered and removed by crane from their walled garden location.
Various products, including non-acid based strippers and cleaners, were used to restore the original appearance of this font. The types of soiling included: graffiti, dirt, unidentified coatings, and biological growth.
The many broken pieces of this font were reassembled using stainless steel pins and epoxy as reinforcement.
A custom formula composite patching mortar was made using crushed limestone of a similar color as general aggregate. In areas of significant spalling and missing fragments, this mortar was applied and carved to recreate the shape, color and texture of the surrounding stone.
Small cracks, mostly between broken pieces, were filled with a fine aggregate custom mortar.
Stonesculpt installed the restored baptismal font inside the Holy Cross Mission church using a rolling gantry crane; it was dry-set on a stainless steel pin epoxied in the concrete floor.