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The surface on top of the varnish layer of a painting can get a bit filthy and requires some care. This can range from a gentle dry cleaning to a light solvent clean to remove any debris on the surface of the painting. After careful testing, painting cleaning results can present a difference in the visual appearance of your painting or frame.

Painting cleaning for fine art is specialist process. To make sure that the painting does not deteriorate any further, surface cleaning can be the first form of protection to achieve an improvement on the condition and lifespan of the artwork. Both the front and the back of the piece would benefit from this treatment, as both sides may affect its stability!

This will involve patch testing the surface of the painting, to ensure that it is stable enough, then proceeding with the gentlest method to treat your piece.

Get in touch with Brown & Brown Fine Art to discuss professional painting cleaning, surface cleaning and conservation.

Surface Cleaning of Maria, Lady Callcott (NPG 954). (c) National Portrait Gallery, London.

Even when paintings are carefully displayed and maintained, airborne particles can gradually settle on their surfaces.

Common sources of contamination include:
Household dust: Fine particles can collect on textured paint surfaces, frames and canvas edges.
Smoke and soot: Deposits from fireplaces, candles or historic tobacco smoke can create a grey or brown layer over the painting.
Cooking residues: Airborne grease and other deposits may accumulate on paintings displayed near kitchens.
Environmental pollution: Pollutants and particulate matter can contribute to surface soiling, particularly in busy urban environments.
Previous storage conditions: Paintings stored in attics, garages or other unsuitable environments may accumulate significant dust and debris.

The extent to which these deposits can be removed depends on the materials, condition and previous treatments of the painting.

Cleaning a painting requires much more than simply wiping away visible dirt. Paint layers can be fragile, sensitive to moisture or affected by previous restoration treatments.

At Brown & Brown Fine Art, surface cleaning is approached carefully, with the condition and preservation of the artwork taking priority.

1. Initial Condition Assessment

The painting is examined to identify surface deposits, areas of instability, previous restoration work and any signs of deterioration.

Particular attention is given to vulnerable areas, including flaking paint, cracks, exposed canvas and delicate surface finishes.

2. Cleaning Tests

Small, discreet areas are tested to establish how the surface responds to potential cleaning methods.

These tests help determine whether deposits can be safely removed and which approach offers the most appropriate balance between effectiveness and preservation.

3. Controlled Surface Cleaning

Where appropriate, cleaning is carried out gradually using suitable conservation techniques and materials.

The methods selected depend on the individual painting and may include dry surface cleaning or carefully controlled cleaning solutions.

4. Final Assessment

Following treatment, the painting is examined to assess the results and ensure that the cleaning has been carried out appropriately.

The aim is not to make an old painting look new, but to remove suitable surface deposits while respecting the artwork’s original materials, appearance and historical character.


We asked Izabella a few questions about her experience in painting surface cleaning…

Q. What is one of the most common types of surface dirt you encounter when cleaning older paintings?

A. Nicotine (from tabacco smoke) or dust are the two most common. Paintings might come to me dark grey or brown, but this can generally be removed with relative ease.

Q. Have you worked on a painting where surface cleaning revealed details or colours that were previously obscured?

A. That is usually what happens when we clean an artwork! Details or brighter colours will emerge from the piece after a clean.

Q. What is something clients are often surprised to learn about painting cleaning?

A. That just a simple clean can often bring up the details in a painting and remove a cloudy visual appearance from the painting.

Q. Have you encountered a painting where cleaning wasn’t advisable because of the condition of the paint?

A. Where a surface clean is not advisable, the artwork may have lifting paint, or some other reactive issue with the surface. Often, it just means that other treatments such as consolidation (glueing down the paint flakes) or facing (putting a layer of tissue and glue) are needed.

Speak to Izabella for expert advice.

Izabella – painting restoration in progress

Although both treatments can improve the appearance of a painting, they address different issues

Surface cleaning removes accumulated dirt, dust and other deposits from the surface of a painting or its existing varnish layer.

Varnish removal involves the reduction or removal of an existing varnish coating, which may have become yellowed, discoloured or degraded over time.

A painting that appears dark or yellow may not necessarily require surface cleaning alone. In some cases, the discolouration is caused by ageing varnish rather than dirt sitting on top of it. A professional assessment can help establish the cause and determine which treatment, if any, is appropriate.

Find out more about our specialist painting varnish removal services.

In suitable cases, professional surface cleaning can make a significant visual difference.

Accumulated dirt can obscure fine brushwork, reduce the contrast between colours and make details appear less distinct.

Removing appropriate surface deposits may help reveal details that have become difficult to appreciate, improving the overall clarity of the painting.

However, results vary considerably. Some paintings have sensitive or unstable surfaces that limit the extent of cleaning possible, while others may have discoloured varnish or underlying deterioration that requires a different treatment.

At Brown & Brown Fine Art, our priority is always the long-term preservation of the artwork rather than achieving an unnecessarily dramatic visual change.

Can I clean an oil painting myself?

We recommend seeking professional advice rather than attempting to clean an oil painting. Household cleaning products, water, cloths and even gentle rubbing can damage fragile paint layers, alter surface finishes or remove original materials.

A conservator, such as Izabella, can assess the painting and determine whether cleaning is appropriate.

How do I know if my painting needs cleaning?

Common signs include visible dust, a dull or grey appearance, accumulated grime around textured areas and details that appear less distinct than expected.

However, yellowing or darkening may also be caused by ageing varnish or changes within the painting itself. A professional assessment can help identify the cause.

Can you remove nicotine or smoke deposits from paintings?

Smoke and nicotine-related deposits can sometimes be reduced through professional surface cleaning. The extent of treatment possible depends on the painting’s materials, condition and the nature of the contamination.

Testing is essential before cleaning begins.

Will cleaning damage the original paint?

Professional conservation cleaning is designed to minimise risks to the original artwork. Before treatment, the painting is assessed and suitable methods are tested.

Some paintings may be too fragile or sensitive for certain cleaning techniques, and treatment may need to be limited or avoided.

Can all paintings be surface cleaned?

Not necessarily. Unvarnished paintings, unstable paint layers, delicate finishes and certain modern materials can be particularly sensitive to cleaning.

Each artwork requires an individual assessment to establish whether surface cleaning is safe and beneficial.

How much does professional painting cleaning cost?

The cost depends on the size, condition, materials and complexity of the artwork, as well as the extent of cleaning required.

Brown & Brown Fine Art will give you a bespoke quotation for the work based on your painting condition and requirements.

Do you offer painting cleaning services outside York?

Yes. Brown & Brown Fine Art is based in York and welcomes clients from across the UK. Our nationwide collection and delivery service makes it possible to arrange professional painting cleaning without visiting the studio in person.

Whether your painting has accumulated years of household dust, has been affected by smoke deposits or simply appears duller than it once did, Brown & Brown Fine Art can help you understand the treatment options available.

Led by experienced fine art conservator Izabella Gill-Brown, we provide specialist painting cleaning and conservation services with careful attention to the individual needs of every artwork.

Based in York, we also offer a convenient nationwide collection and delivery service for clients throughout the UK.

Contact Brown & Brown Fine Art to discuss your painting and arrange an initial enquiry.