Why the glass matters as much as the print
When a lithograph is framed, the glazing is the first barrier against dust, salt air, fingerprints and general grime. In a coastal place like Woodstock, Sea Point or Durban, fine salt can settle on the surface and leave a hazy film that makes the work look dull. That does not mean the print itself is dirty, it usually means the glazing needs careful attention.
Stone lithographs are often printed on paper that responds badly to excess moisture. If liquid runs into the frame, it can stain the mount, cockle the sheet or leave tide marks near the edges. The aim is to clean the front surface without disturbing the sealed area behind it.
Start with the safest method first
Before reaching for any spray, work dry. Use a clean, soft microfibre cloth and remove loose dust with light strokes. If the frame has moulding detail or corners that trap dirt, a dry soft brush is better than a damp cloth because it lifts grit out instead of dragging it across the glazing.
If the frame is hung in a kitchen, near a braai area or in a room that gets open windows, check for a greasy film. A little residue can usually be removed with a cloth lightly dampened with plain water, then immediately dried. Do not let moisture sit on the edge where the glass meets the frame.
- Wash your hands first so you do not leave skin oils on the glass.
- Put the print on a stable, flat surface if it is safe to take down.
- Spray the cloth, not the glass, to avoid drips.
- Keep cleaning liquid away from the frame joints and backing board.
What to avoid near framed lithographs
The most common mistake is using household glass cleaner straight onto the glazing. Overspray can seep into the frame, soften adhesives and mark the paper inside. Strong solvents, abrasive pads and paper towels can also scratch the surface or leave lint behind. A quick clean is not worth a permanent mark.
Never use a wet cloth around an unsealed frame edge. If the work was framed with a spacer or mount, moisture can travel further than you expect. In humid weather, especially during a Cape storm season or a damp Durban summer, even a small amount of trapped water can linger inside the frame for longer than it should.
- Do not soak any part of the frame.
- Do not use vinegar, bleach or abrasive powders.
- Do not press hard on acrylic glazing, it scratches easily.
- Do not clean in direct sun, because streaks dry too fast.
A practical cleaning routine for home and studio walls
A sensible routine is to dust the room first, then clean the glazing last. That stops fresh dust from settling back onto the frame. If the artwork is on a wall above a sideboard, console or passage table, make sure nearby surfaces are clear so you do not knock the frame while working.
For a framed print in a Stellenbosch home with vineyard dust or a Johannesburg apartment that gets regular traffic, monthly dusting is often enough. Full wet cleaning should be occasional, not constant. If the glazing still looks cloudy after dry cleaning, check whether the issue is inside the frame rather than on the front. That can be condensation, old adhesive or dust behind the glass, and it needs a framer or print studio to assess it properly.
How to protect the print inside while you clean
The safest care happens before the cloth comes out. Good framing should keep the print slightly separated from the glazing, with a clean mount and a backing that blocks dust. If a lithograph is framed tightly against the glass, there is a higher risk of sticking in heat or damp conditions. That is worth checking, especially in coastal homes where humidity can rise sharply.
When cleaning, hold the frame from the sides and avoid twisting it. If the work is large, ask another person to support the opposite edge. This matters with heavier framed editions where the corners can shift or the hanging wire may take strain. A small slip, even just a jolt, can move the print inside the frame or loosen the hanging hardware.
- Keep the frame flat when possible while cleaning.
- Check that hanging wire and wall hooks are secure before lifting.
- Make sure the backing board is intact and not warped.
- Store framed works away from bathrooms, wet walls and direct afternoon sun.
Framing choices that make cleaning easier later
Stone lithography deserves framing that supports the paper and makes maintenance easier. A well-spaced frame helps air move slightly inside the package and gives the glazing a cleaner look for longer. Archival materials are important because they reduce discolouration over time, especially where the print is editioned and signed.
Collectors in Pretoria or Durban sometimes ask whether glazing should be replaced when a frame shows age. The answer depends on the condition of the print inside and the frame structure. If the surface is badly scratched, the seal is compromised, or the mount has stained, it may be better to reframe the work instead of repeatedly cleaning around a problem. That approach protects the edition, not just the appearance.
When to ask for help from a print studio
If there are marks inside the frame, foxing on the paper, or a smell that suggests damp, do not try to fix it through the glass. Open-framed art should be handled carefully, and stone lithographs in limited editions need a method that respects the paper and the print surface. A studio can advise on relining, refitting, mounting and safe storage.
At Lithography Art in Woodstock, we regularly guide collectors on edition care, framing coordination and what to do when glazing looks tired but the print itself is sound. A good rule is simple: if the surface mark is on the outside, clean lightly; if anything seems to be behind the glass, stop and get advice before you make it worse. It is better to pause than to risk a print that cannot be replaced.
