Start with the frame, not the glass
Before you touch the glazing, look closely at the frame itself. Wood, painted finishes, gilt details and metal edges all react differently to moisture and pressure. A quick wipe with the wrong cloth can leave scratches, dull patches or seepage at the corners, which is why the safer approach is to clean from the outside in.
Use a soft brush or dry microfibre cloth to lift loose dust from the top edge, sides and corners first. That stops grit from dragging across the glass once you begin wiping. If the piece is hanging in a hallway or near a kitchen, check for grease around the edges as well, since that can travel onto the glazing and make cleaning harder later.
- Dust the frame first so grit does not scratch the glass
- Check corners for lifted moulding, chips or loose joinery
- Avoid getting moisture into seams or backing boards
Choose a gentle cleaning method for the glazing
For most framed glass, a lightly dampened microfibre cloth is enough. Plain water is usually safer than strong cleaners, especially if the frame has a painted or stained finish. Spray the cloth, not the glass, so you do not let liquid run down behind the frame. If you do use a cleaner, use a small amount and keep it away from the edges.
Never use scouring pads, rough paper towel or household abrasives. They can leave fine marks that show up in strong light, particularly on large pieces in offices or galleries. If the glass is old, wavy or slightly soft at the edge, work extra gently because older glazing can be more fragile than it looks.
- Use a clean microfibre cloth rather than tissue or paper towel
- Apply liquid to the cloth, not directly onto the glass
- Dry immediately with a second soft cloth to prevent streaks
Keep moisture away from mounts and artwork
The main risk is not the glass itself, but what sits behind it. A mount board can stain if it becomes damp, and artwork can cockle, fade or stick if water gets through the edges. That is why cleaning framed glazing is not the same as cleaning a window. You are working near paper, ink, photographs and fabric, sometimes only a few millimetres away from the surface.
If the artwork is close to the glass, any heavy pressure can also shift the piece inside the frame. That is a common problem with photographs, certificates and signed prints. Clean in small sections and keep the frame upright so liquid does not pool at the bottom edge. In a humid area like Durban, it is even more important to dry everything quickly because trapped moisture can linger longer than expected.
- Wipe lightly and do not press the glass into the artwork
- Keep the frame upright while cleaning
- Stop if you see moisture near the mount or backing
Handle fingerprints, haze and salt marks the right way
Fingerprints are usually easy to remove, but haze and salt film need more care. In Johannesburg, dust is often the bigger issue, while in coastal homes and businesses, salt can leave a thin film that seems to return after each wipe. If the glass still looks cloudy after a gentle clean, the problem may be residue on the inside, not the outer surface.
Try a second clean cloth with fresh water and work from top to bottom. If marks remain, inspect the room conditions. Kitchen steam, smoking indoors and aircon vents can leave a dull layer on glass over time. Do not keep scrubbing, because repeated pressure can damage decorative finishes and may shift the frame joints a bit.
- Use a second clean cloth for a final pass
- Check whether haze is inside rather than outside
- Be cautious around coastal salt, kitchen steam and aircon dust
When to leave the frame unopened
Some framed pieces should not be cleaned by opening them at all. If the artwork is valuable, old, signed, limited edition or framed with fragile materials, the safest step is to leave the contents alone and clean only the outside surface. A badly sealed frame can also let in dust, insects or moisture, so repeated opening and closing can make things worse.
Watch for warning signs such as a warped backing board, mould smell, loose corners, cracked glazing or visible condensation inside the frame. These are signs that the piece needs more than a surface wipe. In those cases, a proper assessment is better than trying to force a clean at home.
- Do not open valuable or fragile framed pieces unless necessary
- Look for mould, warping, condensation or loose corners
- Stop cleaning if the frame seems unstable
A practical routine for homes, offices and galleries
A simple schedule keeps framed glass looking good without overhandling it. In a home, a light dusting every few weeks is usually enough. In a gallery, foyer or retail space, weekly checks make more sense because fingerprints and airborne dust build up quickly. If the piece sits near a busy passage, at eye level or by an entrance, expect to clean it more often.
A Parkhurst client once brought in framed photographs from a family home after a summer of open windows and road dust. The frames themselves were fine, but the glass had a fine film and the corners had collected grit. A careful clean, followed by a better hanging position away from direct airflow, made a clear difference. That is often the best outcome: not just cleaner glass, but fewer problems next time.
Keep a small cleaning kit on hand with a microfibre cloth, soft brush and clean dry cloth. For multi-piece walls, clean one frame at a time so you can spot any damage before it spreads. If the piece also needs a repair, reframing or glass replacement, it is better to sort that before trying to polish it back into place.
