ArtCare Conservation | Case Study: Vizcaya Museum and Gardens — Galleon Room
The five decorative Italian landscape paintings installed in the Galleon Room at Vizcaya Museum & Gardens form part of the richly layered historic interiors that define the estate. Dating to the 19th century and installed as a coordinated suite, the works contribute significantly to the character of the room, operating both as individual compositions and as a unified decorative ensemble within the architectural scheme. All five works were brought to the studio for full treatment, including lining and varnish reduction. Two works — Italian Landscape (Mountains) and Italian Landscape (Ploughing)— exhibited the most severe insect damage and are therefore highlighted here.
Between 2022 and 2023, ArtCare Conservation undertook a comprehensive assessment and treatment programme across the full group. These two paintings required particularly extensive intervention following prolonged and severe insect damage that had developed undetected over many years.
Installed within the challenging subtropical environment of Miami, and despite being housed within the museum under controlled HVAC and light conditions, the paintings remain subject to ongoing biological activity associated with their proximity to Biscayne Bay. This creates an environment in which insect infestation is not only possible, but persistent. While the paintings appeared visually coherent from the front, closer examination revealed a far more complex and compromised condition.
Inspection under visible and ultraviolet light indicated surface disruption, staining, and losses, but it was only upon removal from the wall and examination of the versos that the full extent of deterioration became apparent. Both canvases exhibited extensive cockroach infestation, consistent with Periplaneta americana, the American cockroach species prevalent throughout South Florida. Dense accumulations of frass, insect remains, and organic debris were present across the entire verso, particularly concentrated along the lower tacking margins and internal stretcher members.
The insects had consumed significant portions of the original canvas support from the reverse, eroding both sizing and fibres across large areas. In multiple locations, this activity had progressed to complete fibre loss, resulting in perforations extending through to the paint layer. Associated staining from biological deposits had migrated through the lining canvas and into the preparatory layers, further compromising the integrity of the works.
Both paintings had previously undergone glue-paste lining, a traditional structural intervention that, in this case, contributed to the problem. The lining canvases had not been sealed, leaving the versos exposed. The interstitial space between the original and lining canvases provided an ideal habitat: warm, dark, undisturbed, and rich in organic material. The adhesive itself had been partially consumed, further weakening the bond between layers.
Damage was most pronounced in the lower sections of each composition, corresponding to areas of greatest accessibility for insect activity. In Mountains, the lower left quadrant exhibited extensive loss across both canvas and paint layers, while Ploughing showed comparable degradation, with areas of the support reduced to near-transparency and, in places, complete loss of the paint layer.
There was no active infestation at the time of treatment, only the remains of prior activity, including extensive frass deposits and accumulated carcasses. Treatment began with precautionary insect eradication, followed by stabilisation of the design layer. Fragile paint and ground were secured using a protective facing of Japanese tissue adhered with isinglass, allowing the works to be handled safely during structural intervention. The original stretchers were removed, and the degraded glue-paste linings — heavily contaminated and no longer functional — were carefully detached. Residual adhesive was reduced through a combination of mechanical action and aqueous gel systems, a process requiring particular care given the weakened state of the primary canvas.
Extensive structural repair of the original supports followed. Areas of complete fibre loss were addressed with canvas inserts, while smaller perforations and tears were stabilised through localised repairs. The degraded canvas was then re-sized to consolidate remaining fibres and restore a degree of flexibility and cohesion to the support.
Both paintings were subsequently re-lined onto new Belgian linen using a suspended lining method. This approach allowed the introduction of a new support with minimal direct pressure and heat applied to the paint surface, preserving the original topography. The versos of the new linings were sealed with wax, providing a barrier against future insect ingress while also moderating moisture transmission.
New custom stretchers were fabricated for each painting, incorporating seven-member constructions with appropriate cross-bracing to ensure stable tension across the full height of the works. Following re-stretching, both canvases returned to plane and exhibited even, controlled tension.
Surface treatment addressed the significant accumulations of dirt and degraded varnish. Multiple discoloured varnish layers were reduced, revealing a markedly improved tonal range and clarity across both compositions. Earlier selective varnish removal — likely from a prior intervention — had left inconsistencies between upper and lower passages, which were carefully balanced during treatment.
Losses to the design layer were filled and reintegrated using conservation-grade materials, with inpainting carried out in a restrained, mimetic approach to restore visual continuity without overcompensation. Final varnishing employed a stable synthetic system, providing both saturation and long-term reversibility.
As a preventative measure, Tyvek backings were installed on the versos of all five paintings. This breathable, inert material forms an effective physical barrier against insect access while allowing for appropriate environmental exchange — a critical consideration in a historic interior where conditions cannot be fully controlled.
Following treatment, all five paintings were returned to Vizcaya and reinstalled as a coherent group. Structurally, the canvases are now stable, with losses addressed and support integrity restored. Aesthetically, the compositions have regained legibility, with previously obscured passages now readable and unified within the broader decorative scheme of the room.
The Galleon Room project underscores the particular vulnerability of paintings installed in historic interiors where environmental conditions and biological activity are ongoing factors. The severity of the damage observed here was the result of long-term, undetected infestation — a process that remains largely invisible without routine inspection of the verso.
For this reason, ArtCare strongly recommends the implementation of a cyclical maintenance programme. Regular condition assessments, including scheduled verso examination, combined with environmental monitoring and preventative measures such as backing boards, are essential to mitigating future risk.
Through this conservation effort, the Galleon Room paintings have been stabilised, reintegrated, and returned to a condition that allows them once again to function as intended — as integral components of Vizcaya’s historic interior, preserving both their material integrity and their contribution to the architectural whole.
