A huge scaffolding has been erected these days in front of the altar of the Sistine Chapel and completely covers the famous fresco of The Last Judgment by MichelangeloBehind that structure, a specialized team works just centimeters away from the colossal figures of the mural to remove a thin whitish film that had dulled the original tones of the work over the years.
The intervention, which will last approximately five weeks until Easter, is not a full-scale restoration like the one carried out in the 1990s, but rather a very controlled cleaning of a layer of salts that has accumulated since then. According to the Vatican Museums' management, the fresco is currently in a state of preservation. in good condition And the operation is simple, reversible, and focused solely on restoring chromatic vibrancy without altering the pigments.
Scaffolding in front of the altar of the Sistine Chapel
To access the entire surface of the Last Judgment, it was essential to install a complex scaffolding directly in front of the chapel's apse. The structure, placed in such a fragile and historically significant space, required a extremely careful anchoringsupervised by technicians and conservators to avoid any impact on the paintings by Michelangelo and the other Renaissance masters that decorate the room.
Although the fresco is now physically hidden by scaffolding, visitors are not met with a bare wall. A large printed canvas with a reproduction of the Last Judgment has been placed over the structure, allowing them to get an idea of the original composition while the work is underway. In this way, the visual experience inside the Sistine Chapel is maintained, the site of the conclaves that elect popes and which remains one of the most visited art spaces in Europe.
The director of the Vatican Museums, Barbara Jatta, has insisted that the procedure is, from a technical point of view, not very complex. Even so, the assembly of the scaffolding has been one of the most delicate steps of the project, given that any physical intervention in the chapel requires adherence to strict heritage security protocols.
The presence of the canvas, besides its aesthetic function, helps minimize the feeling of disorientation among tourists drawn by the mural's fame. Meanwhile, behind that printed image, a group of about thirty specialists takes turns each day cleaning each section of the gigantic Last Judgment scene.
A layer of salt that dulled the colors
The whitish film being removed is not traditional dirt, but a thin layer of calcium lactateThis is a type of salt that is deposited on the surface. This formation has occurred gradually in an environment with limited ventilation and a massive influx of visitors, whose respiration and body moisture have contributed to these crystallizations over the years.
The Vatican Museums' Scientific Research Department explains that these salts settled only on the surface and did not damage the original paint layer. However, their presence had gradually dulled the mural's color contrasts, reducing the intensity of the blues, reds, and flesh tones that characterize Michelangelo's work in this monumental cycle.
Viewed from below, the whitish patina made the figures appear less defined and the volumes flatter, as if a light mist had settled between the viewer and the scene. By removing these salts, the painting regains its original clarity. chromatic leaps and luminous drama that made it so striking after the restoration completed in 1994.
Barbara Jatta has compared the process to the everyday gesture of brushing off sea salt after a swim at the beach. The image aims to convey the idea of a gentle treatment, where the deeper layers of the fresco are not disturbed, but rather a superficial element that altered its visual interpretation is removed.
Minimal cleaning technique and scientific control
The method chosen to cleanse the Last Judgment is based on the application of deionized water The mural is covered on a double layer of Japanese paper, a very thin and resistant material commonly used in restoration to protect delicate surfaces. The restorers work across the vast expanse of the mural with small brushes, precisely moistening the affected areas.
Japanese paper acts as both a barrier and a support: it allows the emulsified water to act on the salts without directly affecting the paint layer. In this way, the calcium lactate softens and can be gradually removed without carrying away pigments or altering the paint's texture. The result is that, to the touch, the surface of the fresco feels smooth. equally consistent and homogeneous both in the areas already treated and in those that still retain traces of the patina.
Before beginning the cleaning, the team thoroughly documented the artwork's current condition using high-resolution photography and scientific analysis. This preliminary record is essential for comparing any changes made after the intervention and for maintaining an up-to-date archive to inform future preventive conservation decisions.
The intervention is also designed to be entirely reversible. This means that, should a review of the procedure be deemed necessary in the future, the current approach would not preclude new methods. This idea of minimal intervention is one of the guiding principles for heritage conservation in contexts such as the Vatican, with works that are key references in the history of European art.
Thirty restorers for an unparalleled work
Inside the scaffolding, they are working around thirty specialists among restorers, technicians, and diagnostic experts. Their routine consists of advancing in sections, centimeter by centimeter, on a surface that took Michelangelo five years to complete, between 1536 and 1541, and which today stands as one of the most studied frescoes in the world.
The professionals alternate between detailed observation, taking samples when necessary, and applying the cleaning system itself. The work demands great manual dexterity and concentration, given the monumental scale of the figures and the height at which the intervention takes place, elevated above the chapel floor and facing the altar.
This operation comes three decades after the controversial restoration of the 1990s, which revealed the vibrant colors applied by Michelangelo beneath layers of dirt and historic varnishes, but sparked intense debate among historians and conservators across Europe. Now, the intervention is presented as a more moderate step, focused on restoring the brightness to the color range without reopening the fresco or interfering with the underlying structure.
While these works continue, public access to the Sistine Chapel remains open and the everyday scene of groups of visitors moving silently through the room coexists with the activity of the restorers, almost invisible behind the canvas that reproduces the Last Judgment.
The Last Judgment as a great visual catechism
The Sistine Chapel is, in itself, a compendium of Renaissance art. Its side walls display pictorial cycles by masters such as Botticelli or Ghirlandaiowhich narrate episodes from the lives of Jesus and Moses. However, the visual prominence lies in the interventions of Michelangelo: first, the vault with scenes from Genesis, painted from 1508 onwards at the behest of Julius II, and years later the colossal Last Judgment on the altar wall.
When Michelangelo began this second commission, he was already 61 years old and had a well-established reputation as an almost mythical artist, nicknamed "the Divine." Pope Paul III asked him to depict not the origin of the world, but its end: the moment of the Last Judgment. The result was an iconographic program so powerful that chronicles record how, upon unveiling the fresco, the pontiff fell to his knees, overwhelmed by the severity of the scene.
In the center of the composition, against a clear sky, Christ appears captured in the instant before pronouncing judgment, as shown the illustration of the Last Judgmentwith his right arm raised in a gesture that attempts to order the whirlwind of souls swirling around him. Beside him are arranged recognizable saints and martyrs, such as Saint Peter with the keys to heaven or a Saint Bartholomew holding his own flayed skin, where many experts have wanted to see a self-portrait of Michelangelo himself.
At the bottom, angels sound trumpets that awaken the dead from their graves. Some, resurrected, ascend toward salvation, aided by celestial beings, while others are dragged down by demonic figures, creating a vision of hell full of dynamism and anatomical tension.
A masterpiece of anatomy and visual drama
The Last Judgment has often been described as a authentic treatise on anatomyMichelangelo populated the scene with muscular, contorted bodies in extreme poses, demonstrating an almost sculptural understanding of the human figure. This anatomical exuberance would eventually clash with later moral standards, prompting censors to cover nudes with glazes and painted drapery.
Beyond the controversy, the fresco has become one of the most powerful images in Christian iconography, a kind of visual catechism that condenses, on a single wall, the idea of judgment, the hope of salvation, and the fear of damnation. Its location, presiding over the space where the cardinals meet to elect the pope, reinforces this symbolic character within the heart of the Vatican.
The current cleaning does not modify that structure or alter historical decisions, but rather restores to the whole the clarity and contrast intended by Michelangelo. Specialists expect that, once the intervention is complete, the mural will once again offer the same impression of strength and drama which dazzled those who saw it restored three decades ago.
Once the scaffolding and tarpaulin are removed, visitors to the Sistine Chapel will once again be able to admire the Last Judgment with its intensified colors and a clearer view of the scenes, without the original base of the painting having been touched. This discreet yet technically meticulous cleaning operation is part of the ongoing efforts to preserve one of Europe's greatest artistic treasures in the best possible condition for present and future generations.
