Painting Conservation

Torn canvas, blooming varnish, flaking paint.

Painting conservators address a wide variety of condition issues—from structural stabilization to inpainting. We do it all with the artist’s original intent in mind. Whether your painting fell from a mantlepiece, was damaged during a disaster, or suffered injury in transit, we do our best to preserve and repair these valued works of art—no matter if that value is sentimental or financial.

Art Restoration Santa Barbara
An oil painting restoration project

*The above photos are detail images of a larger painting before, during, and after conservation treatment.

Easel painting (not mural conservation). Art restoration in Santa Barbara and Monterey

What does painting conservation entail?

Painting conservation is similar to painting restoration but takes a more conservative approach that honors the artist’s intent, materials, and original image. Conservators start by examining the painting to understand its condition and any underlying issues. We consider the materials, the painting's structure, its environment, previous restoration attempts, and the extent of damage or deterioration. We conduct tests and document our findings.

Art Restoration in Santa Barbara, San Luis Obispo, and Paso Robles

Then we…

  • Conduct further research.

  • Submit a proposed treatment report.

  • Stabilize the painting’s primary, secondary, and paint layers.

  • Reintegrate areas of loss or damage.

A painting conservation project might progress as follows…

The painting below (mid-20th-century oil on Masonite) was first examined using visual light, magnification, microscopy, and UV exposure. It was photographed and then removed from its frame as part of the examination. Areas of paint loss—many of which were to the board (primary support)—were closely examined for any surrounding cracking, tenting, and/or unstable paint. Several dry and wet cleaning tests were conducted to determine the type, extent, and responsiveness of the dirt/dust/smoke layers coating the paint layer.

Areas of loss were then stabilized and lifted paint was consolidated with appropriate adhesives before proceeding with further treatments. The painting’s recto, verso, and frame were cleaned first with dry methods, after which the paint layer was cleaned with moisture and a low-concentration chelating agent. Areas of loss were filled with a water-soluble fill material, textured, and inpainted with watercolors to integrate with the surrounding original paint. The painting was reframed, photographed after treatment, packed, and delivered to the owner. Only detail photos are provided below to illustrate the full scope of treatment without showing the entire work.

Please request an anonymized, abridged portfolio by emailing elizabeth@centralcoastartconservation.com for more information.

Or as follows…

The painting below (mid-20th-century oil on canvas) was first examined using visual light, magnification, microscopy, and UV exposure. It was photographed and then removed from its frame as part of the examination. While this painting was not varnished, it did suffer a heavy smoke layer after spending many years above an active fireplace. The smoke damage was our primary concern. Several dry (smoke sponges) and wet cleaning tests were conducted to determine the type, extent, and responsiveness of the dirt and smoke layers coating the paint layer.

The painting’s recto, verso, and frame were cleaned first with dry methods, after which the paint layer was cleaned with moisture and a low-concentration chelating agent. The painting was reframed, photographed after treatment, packed, and delivered to the owner. Only detail photos are provided below to illustrate the full scope of treatment without showing the entire work.

Please request an anonymized, abridged portfolio by emailing elizabeth@centralcoastartconservation.com for more information.

FAQs

  • Art conservators start by examining the painting to understand its condition and any underlying issues.

    We consider the materials used by the artist, the painting's structure, its environment, previous conservation or restoration attempts, and the extent of damage or deterioration.

    Using visible light, UV light, and magnification, we inspect both the front and back of a painting. In the studio, we will use an optical or stereomicroscope. On-site, a handheld microscope or jeweler’s loupe is employed.

    Cleaning tests are common during the examination process, involving physical cleaning with a small brush or sponge and, sometimes, solvents to understand the surface coating better. All tests are discrete.

    In some cases, the painting must be removed from its frame for proper examination, always with the client’s permission.

  • Art conservators meticulously document our findings, including condition issues, construction details, and provenance information like labels and signatures.

    I follow the American Institute for Conservation’s Ethics Framework for treating historic and artistic works, which demands that we provide thorough assessments to clients before proceeding with treatment.

    Immediate threats to the painting, like insect infestations, mold, mud, smoke damage, or flaking paint, are prioritized. Regardless of the issue, each client receives a report before committing to any course of treatment.

    Each conservator has his or her shorthand for condition assessments, which help understand the painting’s history, artist's intent, ongoing conditions affecting it, and potential treatment approaches.

    However, most seasoned professionals will use similar terminology. I am always happy to explain any condition terms used in my reports.

  • The first stage of treatment is stabilization, which might involve:

    • Consolidating cracked, lifted, and tented paint

    • Moisture treatments and humidity chambers

    • Pest management

    • Mold removal

    • Structural stabilization of the stretcher or strainer

    • Repairing tears

    Stabilization involves techniques like feeding adhesive beneath lifted paint, using fine implements to redirect displaced paint, and sometimes applying heat or using humidity chambers.

    Structural issues might require reinforcing the canvas or secondary support to prevent further deterioration and ensure stability. Removing mold and other foreign accretions is also part of this stage, overlapping with cleaning.

    Mending, a subset of stabilization, involves reweaving canvas fibers, patching tears, and sometimes adding strip-lining, loose lining, or a full lining.

    However, full linings are rare as they can cause further damage, including imparting their texture to the paint. They are more commonly used in outdated restoration work than in conservation treatment. Reversible materials are always used by seasoned professionals.

  • Over time, paintings accumulate layers of grime, dirt, and possibly discolored varnish. Some paintings may also be vandalized or neglected.

    Art conservators carefully clean the painting's surface both mechanically and chemically, using sponges, brushes, picks, scalpels, solvents, solvent gels, chelating agents, swabs with moisture, and more.

    Again, I follow the American Institute of Conservation’s guidelines when completing treatments.

    Cleaning always occurs after stabilization to prevent further damage to delicate areas.

  • When the painted surface or priming is damaged, conservators fill and inpaint those areas with reversible materials to enhance readability.

    The goal is not to deceive anyone about the painting’s condition but to match the original colors, tones, textures, and imagery for minor losses.

    For major losses, they might outline the lost imagery instead of recreating it, with different conservators employing different approaches.

    In painting restoration work, someone might “overpaint” an area of loss. This means that the restorer extended his or her paint over the artist’s original paint. As conservators, we do not do this. We only apply fills and inpainting to areas of paint loss.

    Again, I follow the American Institute of Conservation’s guidelines when completing treatments.

  • Contrary to popular belief, conservators do not always remove and replace a painting’s varnish. Varnish removal is only necessary when it harms the painted surface, obscures it, or contradicts the artist’s original intent.

    Sometimes, a varnish applied later is not intended for that particular piece, and removing it better reflects the artist’s intent.

    Occasionally, a light, reversible varnish may be applied to areas needing further saturation to improve readability.

  • My training and experience covers oil, acrylic, and multimedia paintings on canvas, wood panels, metal, and other substrates.

    I typically treat modern and contemporary paintings created between 1850 and today. I will treat both stretched and unstretched paintings. For example, I have worked on a number of Sam Gilliam's unstretched "Drape" paintings.

    I primarily treat easel paintings and do not usually perform object, furniture, or mural conservation. I rarely work on paper unless the work on paper has a substantial paint layer.

    However, I do offer other art conservation and preservation services for museums, galleries, foundations, auction houses, and private collectors. These include courier services, preventive conservation for all types of artwork (not just contemporary or modern art), and disaster mitigation.

Art Restoration in Santa Barbara, San Luis Obispo, and Paso Robles

The painting (oil on linen) pictured above was subject to a prior restoration attempt in which large tears were taped with duct tape over the verso of the canvas and areas of loss were painted with a dark gray paint. The overpaint extended to the cliff, a group of trees, the sky, the body of water, and the cloud of smoke emanating from the fire on the beach. That overpaint was sandwiched between layers of dirt and varnish—making removal possible despite its material similarity with the artist’s original paint.

The above photos show this painting before treatment (left) and after consolidation and mending but in the midst of cleaning and overpaint removal (right). At this stage, the painting required further treatment, including more cleaning (some of which must be done under the microscope with mechanical methods due to the tenacity of the overpaint and the tightness of the brushstrokes in impasto (sky)), canvas inserts where the primary support has been lost (punctures in the upper right), filling, inpainting, and a series of moisture treatments.

Tears are typically mended by:

  • Gently cleaning the recto and verso of the painting.

  • Conducting moisture treatments to bring the torn threads and surrounding canvas back into plane.

  • Weaving threads back into place with tweezers under a microscope.

  • Applying an adhesive (wheat starch paste, Beva, etc.)—either to a patch (Japanese tissue or a woven material) or to the threads involved in the tear. Sometimes, we use threads of a similar weight as mends (shown in the second image from the left).

  • Setting the patch and/or adhesive with heat or pressure.

Common Painting Conservation Treatments

  • Dry surface cleaning

  • Removal of tenacious smoke or dirt layers with chelating agents

  • Varnish removal with solvents and solvent gels

  • Overpaint removal (mechanical and chemical)

  • Filling and inpainting

  • Tear mending

  • Addressing mold, accretions, and splatter

  • Crack consolidation

  • Bringing lifted paint back into plane

  • Moisture treatments

  • Pest management, including anaerobic chambers and exposure to solvents

  • Backing board (and other support) design and attachment

  • Frame consolidation, filling, inpainting, re-gilding, and more

  • Structural repairs to stretchers, strainers, panels, and other secondary supports

Torn oil painting. Tear repair. How to fix a torn canvas painting.
Art Restoration in Santa Barbara, San Luis Obispo, and Paso Robles

We often remove the following during cleanings:

  • Discolored, blooming, patchy, or inappropriately applied varnish.

  • Soot and smoke from exposure to cigarettes, house fires, or disasters.

  • Splatter and other accretions (accidental or vandalism).

  • Pest materials (mice, spiders, flies, beetles, etc.).

  • Overall dirt, dust, or cigarette smoke layers.

  • Overpaint or discolored inpainting.

  • Putty and fill materials.

Please request an anonymized, abridged portfolio by emailing elizabeth@centralcoastartconservation.com or clicking the button below.

Contact us about your painting.

elizabeth@centralcoastartconservation.com

Cell Phone: (818) 326 - 3655

Studio Phone: (805) 728 - 0650

Paso Robles, California

*Currently accepting new clients with projects measuring less than 72 x 72”; we will travel to Los Angeles, Santa Barbara, Monterey, San Francisco, and anywhere in between for on-site examinations. Please make an appointment by calling or emailing us.