Tagged: oil painting restoration

Restoring a painting of Sheep By Rosa Bonheur

Recently I had the pleasure of restoring a little gem of a painting by Rosa Bonheur.  The restoration involved several procedures which I’m often asked about, (Lining, facing, consolidating, patching) so I documented the work and made a video explaining what was done.  The photos below show some highlights.

After restoration.
After restoration.
Rosa Bonheur
Rosa Bonheur, born Marie-Rosalie Bonheur, (16 March 1822 – 25 May 1899) was a French artist, an animalière (painter of animals) and sculptor, known for her artistic realism.
Before restoration.
The painting was brittle, filthy, and torn.
Facing the painting
To keep the painting from falling apart, a sheet of tissue was adhered to the front. This process is called “Facing.” The adhesive went into all of the cracks in the paint layer, and consolidated it (held it together.)
Lining the canvas:
Lining the canvas: This photo shows the materials used to create a new backing for the old canvas. It is a sandwich layer of polyester mesh, Mylar and polyester canvas. A heat-set adhesive is used to bond the layers together.
One of my vacuum tables. The bottom is a heated sheet of aluminum. The top is flexible vinyl. Rosa's painting is in position for laminating to its new backing.
One of my vacuum tables. The bottom is a heated sheet of aluminum. The top is flexible vinyl. Rosa’s painting is in position for laminating to its new backing. The facing paper can be seen  on top.
air is evacuated and heat turned on.
With the top closed, air is evacuated and heat turned on. The vinyl top forms itself to the contours of the painting.
Once the painting is lined, it can withstand the rigors of handling.
Once the painting is lined, it can withstand the rigors of handling, removing the facing paper and cleaning. Here, the painting is partially cleaned. The white mesh of the new backing extends beyond the painting’s margins.

What I Did This Summer

My idea of fun this summer was anticipating what new treasure would arrive at my studio next.  I was not disappointed!  The variety of paintings was totally fascinating.

The steady stream of oil paintings  included a normal array of smoke-covered 19th Century ancestors, views of Cape Cod and Europe, and several floral still-life paintings in various states of decay.  An then, in a box delivered from a collector in Miami, a fabulous 17th Century French altar-panel arrived!  Its paint was lifting, and covered with at least a century’s worth of soot. (Seems to have had some restoration work in the late 1800’s.)

A call from New Hampshire resulted in the arrival of a rare painting by William Morris Hunt.  It had been over a fireplace mantel since its creation in the mid 1800’s, and its winter moodiness was covered by a layer of grey.

A Rhode Island collector presented a 19th Century continental landscape for cleaning, it’s minute details all obscured by the residue of cigarette smoke.  An heir in Colorado sent two American 1880’s landscapes to be cleaned and repaired.  A woman in Utah sent a ripped painting of a horse, and a Massachusetts couple arrived at the studio with a cavalry battle-scene painting in need of cleaning.  And, apparently to balance-out my overly equine selection, a man from Connecticut brought a painting of cows.

It’ was a fun summer!



Clean Oil Paintings & Cardi’s Furniture Sponsor Gala Preview of Downton Abbey in Providence RI

The illustrious cast of Downtown Rhody.
The illustrious cast of Downtown Rhody.

Are you a Downton Abbey fan?  I am, and along with the Cardi Brothers of Cardi’s Furniture, decided to sponsor the Rhode Island PBS Preview Screening of Downton Abbey.





Pre-screening dinner party on stage at the Veterans Memorial Theater.
Pre-screening dinner party on stage at the Veterans Memorial Theater.

The event was held on December 6, 2014 in the magnificently restored Veterans Memorial Theater in Providence, with a fabulous on-stage dinner and an introduction to 1920’s costume design presented by Laurie brewer, Costume and Textiles Curator at the Rhode Island School of Design Museum.

The screening was also preceded by an extraordinary rendition of “Downtown Rhody”, featuring The Cardi brothers and Yours Truly, along with a cast of RIPBS Celebrities.

Enjoy our Rhode Island take on the Masterpiece hit!

Discoveries While Restoring A 200 Year Old Oil Portrait

Some old paintings have a hidden history.  In the course of 200 years, a lot can happen to a painting, and it is rare to find one which has never required repair from some form of damage. This is the account of an oil portrait which had a few secrets.


1-Joel Prouty

A few months ago I was asked to restore a portrait of Joel Prouty, a Massachusetts resident born in the late 1700’s.  At first glance, it was obvious that painting was 200 year old oil portrait before restorationcovered in layers of smoke, soot and grime, but there were no rips or holes in the canvas.  However, something was wrong with the left side of his face.  As I examined the area, I noticed an unusual cracking and surface texture from an old repair, and that the previous retouching was crude.

When I turned the painting over to see the patch, I realized that the entire canvas had been lined onto a piece of linen, and by the look of it, the lining and repair were done about a hundred years ago!  A UV light inspection revealed obvious retouching on the face, but the black background and soot hid any other areas of alteration.

In evaluating my course of action, I determined to clean off all the soot, remove the old varnish and retouching, remove the patch and start the restoration with a new fresh surface.   If needed, the existing lining would also be removed and replaced.


When cleaning started, copious amounts of black grime were lifted from the surface.  The background was revealed to be painted in a dark, muted green.  A few spots resisted cleaning, and I soon realized that those spots were actually oil paint used in the previous restoration.  The restorer hadn’t cleaned the painting before retouching, and painted those areas by matching the color of the dirt!


That discovery was a precursor to what I was to find when cleaning the face.  You can see in the photos that most of the paint on the patched area came off.  However, where the artist blended over into the undamaged face, the paint was well bonded to the original paint.  It was very much darker than the cleaned area.

Patch revealed during cleaning of 200 year old oil painting.

In cleaning off the patch, it was revealed to be made of an old gesso formula which was in common use a century ago.  It was harder than plaster, and had developed a few cracks, but was otherwise stable and firmly in place.  I decided to repair the cracks with Acryloid B-72 (a glue used in sculpture repair) and then to re-level the patch with an acrylic filler.  The lining appeared to still be in excellent condition, so it was left alone.

As I continued cleaning into the lower background, large areas of black retouch paint started lifting off with the old dirt and varnish.  That paint was covering some scrapes and water damage. When I got to the lower left corner of the painting, I noticed bits of red appearing.  That turned out to be the artist’s signature!  Unfortunately, the last few letters and the date below were partially missing, but enough was visible to determine that the artist was Ethan Allen Greenwood, a noted Boston portrait painter active at the turn of the 18th Century!


Finding the signature was a thrill worthy of an Antiques Roadshow episode, but my excitement was tempered by the sight of the old patch covering what was once a large piece of missing canvas.  The repair of that area was going to take a bit of inventiveness, not just to create half a face with no reference, but to do it in a way that matched the qualities of the 200 year old surface around it.joel before & after copy

The face showed craquelure, and also a myriad of small flecks of missing paint.  Painting over the entire face was an unacceptable solution (I want to keep as much original paint showing as possible) so I painstakingly in-painted the worst of the paint-pits.  To replicate the complex surface of the original side, I decided to paint over the patch in a manner which had the visual qualities of the original side, but not the same texture.

The result is an almost pointillistic interpretation of the face, which blends well with the original area.


An Unexpected Adventure Restoring Governor Clifford’s Portrait

A lot of 19th Century portraits arrive at my studio.   Often they are suffering from aged canvas and a good coating of soot.  Sometimes they have holes in them, lifting paint from water damage, and lots of distracting craquelure.

Recently I was asked to restore a portrait of Massachusetts Governor John Clifford (1853).  It had almost every kind of damage except fire.  The canvas was rotted and weak: it had fallen out of its frame.  At some point in the past, it suffered water damage which lifted quite a bit of paint.  There were a few small rips.  Grime was covering everything.  And it had undergone an amateur bit of retouching which left the Governor with a grotesque claw-like hand.  I thought the poor man was victim of a stroke!

The portrait as it arrived in my studio.
The portrait as it arrived in my studio.


The claw.
The claw.






Needless to say, Governor Clifford’s portrait was going to be a very involved job.  I performed the normal steps of using a vapor treatment to relax the cupping craquelure, and the entire paint film was consolidated from behind to prevent further flaking from the water damage.  Then the canvas was lined onto a sandwich of archival polyester mesh and mylar.

The cleaning process went as expected, until I reached the hand.  I carefully removed the old retouching, expecting to see the old water-damaged hand beneath it. That’s where my adventure began.

The Stump.
The Stump.

There was not a trace of the old hand, except for the area which had been scrubbed down by the previous restorer!  Yuk!  Looked like a stump!

For a while I considered inventing a hand to fit the pose.  The Governor was holding his Phi Beta Kappa key, so I did a quick study to find the hand position which may have been there.  That’s when I remembered that the portrait’s owner had mentioned that this painting may be a copy of one in the Massachusetts State House in Boston.

I called the Curator of Collections at the State House, described my project, and asked if Governor Clifford was also holding a key in the State’s portrait, and if I could be emailed an image of the portrait for reference.  The answer was that the portraits most likely matched, but that the one on display in the Capitol was also in need of cleaning, and the details of the key-holding hand were obscured in their photo.

State House Portrait.
State House Portrait.

So, camera in hand, I went to Boston to see the painting, which I was told was installed in the third floor corridor, on the right side of the House Chamber door.  Unfortunately, when I arrived the House was in session and the area around the door, including Governor Clifford’s portrait, was cordoned.  I couldn’t get a good photo from behind the ropes , so I explained my mission to a nearby State Trooper who escorted me to the painting so I could get my photos. (And yes, the painting is DARK — and in a poorly lit corridor — so my photos turned out grainy but useable.)

Reference photo of the Governor's hand in the State House version is used as a reference for replacing the damaged hand.
Reference photo of the Governor’s hand in the State House version being used as a reference for replacing the damaged hand.

Those photos turned out to be a great resource in replacing the hand.  The old retoucher had the right idea for the pose, but just didn’t have the skill to make it believable.  The original painting shows that the key is indeed held in an unusual pose. So I started in on  the task of reproducing the hand, and painting it in a manner similar to the Governor’s other hand, which is softly rendered and refined.

This project was fascinating for me.  It was gratifying to see the process yield results, and to know that by not taking the easy route (inventing a new hand) I was helping preserve an historic document in an authentic way.

The restored portrait of Governor Clifford.
The Governor's new hand.
The Governor’s new hand.

Transparent Lining Saves Signature On Back Of Oil Painting

The Cape Ann school of painting has always been a source of inspiration for me.  I learned to paint in Gloucester while my family summered there, and the excitement of living in an art colony formed my ideas about painting and artists.

Now that I have several decades of perspective on what empowers the Cape Ann artists, I realize that they successfully blended Impressionism and Realism, and enlivened it with a dynamic sense of composition.

What that means is that they loved the physicality of thick, buttery paint, skillfully used complimentary colors, and designed their canvasses to provide an active, energetic visual experience.

A few months ago I acquired a masterful 1928 Gloucester harbor view by Henryk Francis Twardzik (1900-1992).  It needed to be cleaned, but it also had some condition issues which required stabilization of the canvas.

Twardzyk oil painting before cleaning and restoration.
Twardzyk oil painting before cleaning and restoration. Note the large cracks visible in the sky. Similar cracks ran all over the painting, but are not evident in this photo.

When an oil painting on canvas ages, a pattern of craquelure (cracks) often develops.  It shows up as a tracery of fine lines running over the entire surface. If the canvas is strong and the paint is flat, craquelure is usually stable, and not a problem.  It even adds a desirable antique look to many works.

Twardzyk’s paint was perfect Cape Ann, thick and buttery, holding the marks of his stiff bristle brushes.  While that is a desirable characteristic, it can also be problematic.  The paint layer on this painting is as thick or thicker than the canvas support. The painting had heavy cracks, and all of the little islands of paint were cupping and pulling on the canvas

Thick paint with cracks in foreground.
Thick paint with cracks in foreground.
The only small paint loss in Twardzyk oil painting
A small paint loss with lifting paint nearby.

The remedy for this requires two steps:  First, a vapor treatment to relax the paint and flatten it, and then lining the painting onto a new support, which is usually a polyester canvas interleaved with a sheet of mylar.

The new lining covers the back of the canvas, and while that is normally not a problem, this painting was signed and dated on the back, and obscuring the artist’s markings would be undesirable.

Signature and date on back of canvas.
Signature and date on back of canvas. The pattern of the paint’s heavy craquelure can be seen deforming the surface.  (The tracery is actually shadows and highlights on the areas where the cupping paint is pulling on the canvas.)

In a smaller, lighter painting I would opt for lining on transparent Mylar, with a translucent polyester mesh layer to reinforce the tacking margins.  However, this one measures 30″x25″ and the paint layer makes it as heavy as a much larger painting,  requiring a firmer support.  Also, the layer of mesh would fuzz-out the strong, crisp signature.

I opted for an unusual solution.  The heavy-weave canvas needed a good bond to a firm, transparent surface.  I decided on a sheet of 1/8″ Plexiglas, and a thick cushion of transparent adhesive to fill the coarse weave and provide full contact with the smooth plexi.

Here is the process used: A diluted solution of the normal mounting glue, Beva 371, (a heat-set liquid) was first applied to the back of the canvas.  It soaked in, to fill any cracks in the painting ground.  It also penetrated into the larger cracks in the paint.  (This is referred to as consolidating the paint layer.)  The next day, after that dried, a normal coating of Beva 371 was added to the back of the canvas. The Plexiglass was sanded on the side to face the painting.  After another day of drying, several sheets of Fusion 4000 (a heat-melt adhesive) were added to the back of the canvas. 

Note: The Beva melts at a lower temperature than Fusion 4000,   The two adhesives have different properties when they are set.  The Fusion 4000 becomes a flexible and waterproof sheet of archival plastic, providing a barrier between the plexi and the painting.  The Beva remains flexible, but not uniformly solid.  The Fusion 4000 forms to the contours of the canvas and the sanded plexi before setting.  The Beva provides a barrier which prevents the Fusion 4000 from fully bonding with the canvas fibers, making removal of the Fusion 4000 easier if needed.

A layer of polyester mesh was cut to overlap the tacking margins.  The center of the mesh was removed so that only about 1/16″ around the edges would be covered by the plexi sheet.

Once all the pieces were assembled, everything was tacked in place with a hot iron.  Then it was placed into a vacuum table, the air evacuated, and the temperature brought up to melt the adhesives.  After the bonding, the heat was turned off and the painting cooled for about an hour in the vacuum.

The signature and date are visible through the adhesives and the Plexiglas
The signature and date are visible through the adhesives and the Plexiglas
Twardzyk painting being cleaned.  Note the new white polyester mesh extending beyond the margins.
Twardzyk painting being cleaned. Note the new white polyester mesh extending beyond the margins.

After lining, the painting was cleaned.  Luckily, only one small paint loss needed to be in-painted.  A clear, non-yellowing varnish brought out all the colors.  When dry, the painting went back into the spray booth and the plexi received a coating of mat varnish, to make the view of the canvas beneath look like it was unlined.

The new polyester mesh edges were tacked back onto the original stretcher, and a protective backing was cut to fit, with a window opening to show the signature and date.

After cleaning and restoration.
After cleaning and restoration of the oil painting.

Learn more about this painting at http://www.rubylane.com/item/1007038-3224E/1928-Gloucester-Harbor-Marine-Oil

Our Art Conservator & Contact Info.

An art conservator and respected artist, Bruce Wood demonstrates painting techniques at art associations across New England. (Photo by Greg Gale.)











Bruce Wood has been cleaning, restoring and repairing oil and acrylic paintings privately for over twenty-five years.  He has fine art degrees from Massachusetts College of Art (BFA) and The School of the Art Institute of Chicago (MFA).  After graduating, he worked in the Art Institute of Chicago, a major museum,  where he became acquainted with several conservation techniques.

After leaving the Art Institute of Chicago, he completed a one-year apprenticeship in color transparency retouching at Spectrum Studio in Chicago, where he learned the discipline of exact color matching and invisible image alteration.

For ten years (before the advent of computer retouching) Bruce Wood operated his own transparency retouching studio in Chicago, where his accounts included Keebler, Quaker Oats, McDonalds, Jim Beam, Coors and Helene Curtis.

His entire family has been involved in the art business.  His parents James and Angelina Wood established The Woodshed Gallery in Franklin, Massachusetts in 1968.  The gallery is now home of the Clean Oil Paintings restoration studio, and conducts exhibitions of contemporary and historical artworks.

An oil painter himself, Bruce has studied antique painting techniques, and collected nineteenth and early twentieth century oil paintings.  He has restored them and sold them at antique and fine art auctions across the country, including Christie’s and Sotheby’s auctioneers.

Bruce at cleanoilpainting.com