If your art is framed, clean only the glazing and the frame, never the artwork surface underneath. Dust regularly with dry, soft tools, use an ammonia-free cleaner on glass or distilled water on acrylic, and stop immediately if you notice flaking paint, cracking, or loose gilding. Anything beyond light dusting on those surfaces calls for a professional conservator, not a household cleaner.
TL;DR:
- Use only dry, soft tools like microfiber cloths and natural brushes for dusting, avoiding any wet cleaning unless approved by a conservator.
- Avoid household ammonia cleaners on acrylic glazing, opting for distilled water or dedicated plastic cleaners to prevent damage like crazing or yellowing.
- Never spray cleaners directly onto the artwork or glazing; dampen cloths first and work gently from the center outward.
- Stop cleaning immediately and consult a conservator if flaking paint, loose gilding, or structural damage is visible.
- Proper framing with UV-filtering glazing and sealed backing significantly reduces cleaning frequency and protects artwork over time.
Table of Contents
- Before you start: a quick prep and inspection checklist
- Which cleaners and tools are safe for glass, acrylic, and frames
- Step-by-step cleaning for glass, acrylic, and unglazed pieces
- When to stop cleaning and call in a conservator
- How better framing and environment cut down future cleaning
- A publisher’s take on caring for devotional art
- Ready-framed devotional art that needs less upkeep
- Sources
- FAQ
Before you start: a quick prep and inspection checklist
A few minutes of prep prevents most cleaning accidents. Gather your tools, find a stable work surface, and look closely at the piece before you touch it with anything but a dry cloth.
- Collect microfiber cloths, lint-free wipes, distilled water, a soft natural-hair brush, cotton gloves, and cardboard scraps to protect gilded edges.
- Work face-up on a padded surface, such as a towel-covered table, and identify whether the glazing is glass or acrylic.
- Never spray cleaner directly onto the glazing. Dampen the cloth first, away from the frame.
- Stop and set the piece aside if the paint, gesso, or gilding looks unstable.
Pro Tip: Tap gilded or gessoed areas gently with a fingernail before cleaning. A clicking sound or visible movement means the surface is loose, and cleaning should wait for a conservator’s assessment.
Which cleaners and tools are safe for glass, acrylic, and frames
Glass and acrylic behave very differently under a cloth, and using the wrong product on either one can leave permanent marks. Glass tolerates a light, ammonia-free, pH-neutral cleaner applied to a cloth, followed by a dry microfiber pass to remove streaks. Acrylic and Plexiglas are far more sensitive: ammonia causes crazing and yellowing on acrylic, so distilled water or a dedicated plastic cleaner applied to microfiber is the safer route, according to conservation guidance on specialty glazing.
Frames themselves usually just need a soft brush to remove dust from carved or textured details. Gilded frames are the exception. Gilding is thin and easily worn away, so most gilded surfaces should only be dry dusted, with any deeper cleaning left to a specialist.
- Paper towels leave behind micro-scratches on both glass and acrylic.
- Household ammonia products, including standard glass cleaners, degrade acrylic glazing over time.
- Abrasive pads and solvents strip finishes and can dull glass permanently.
- Feather dusters can catch on flaking paint or loose gilt and pull material away.
Pro Tip: Keep one cloth dedicated to glass and another to acrylic. Cross-contamination with ammonia residue is one of the most common causes of acrylic clouding.
Step-by-step cleaning for glass, acrylic, and unglazed pieces
The right method depends entirely on what is covering the art, and rushing this step is where most damage happens.
For work behind glass:
- Remove surface dust with a dry microfiber cloth or soft brush.
- Lay the piece face-up on a padded surface.
- Dampen a cloth with ammonia-free cleaner, working from the center outward.
- Finish with a dry cloth to remove any streaks, and check for sealed backing before tilting or removing the frame.
For acrylic glazing:
- Dry-dust first with microfiber or Vellux fabric, which conservators use because it traps dirt without abrading surfaces.
- If needed, lightly dampen a microfiber cloth with distilled water or a dedicated plastic cleaner.
- Use straight strokes rather than circular rubbing, since circular motion creates visible micro-scratch patterns over time.
Unglazed or unframed artwork needs the lightest touch of all. Wet cleaning is off the table entirely, and only very gentle hand dusting with a soft natural-hair brush is acceptable. Skip feather dusters and vacuums on painted surfaces directly, unless the setup includes a HEPA-filtered vacuum with a Vellux barrier over the nozzle, a method conservators use specifically because it is nonabrasive.
The back of the frame deserves attention too. A HEPA vacuum with a soft brush attachment removes dust trapped in the rabbet and around the stretcher bars. While you’re back there, secure any loose frame elements and check for signs of water intrusion or pest damage, both of which are easier to catch early than after they’ve spread.
When to stop cleaning and call in a conservator
Not every piece is safe to clean yourself, and knowing the warning signs matters more than knowing the techniques. Before you clean anything, run through a short condition check.
- Flaking paint or visible craquelure across the surface.
- Bulging or rippled canvas.
- Loose or lifting gilt on the frame.
- Water stains or any sign of active mold.
If you see any of these, stop. Conservators warn that unstable surfaces can lose material during routine cleaning or even light movement, and what looks like a simple wipe-down can turn into permanent loss.
When you do need to move a piece, use two hands supporting the bottom edge rather than carrying it by the wire or top rail, remove rings or bracelets first, and consider close-fitting gloves if the surface is vulnerable to skin oils. Move one framed item at a time.
A properly framed piece with conservation-quality glazing, an acid-free mat, and sealed backing often needs nothing more than occasional glass cleaning, since the artwork itself stays untouched inside the frame. That single fact is the strongest argument for good framing in the first place.
How better framing and environment cut down future cleaning
The less often you need to clean framed art, the less risk you carry. That starts with the room the art hangs in, not the cloth you use on it.
- Aim for a stable environment, roughly 70°F ± 4°F with relative humidity near 45% ± 8% where your home setup allows it.
- Keep art away from direct sunlight and heat sources like radiators or vents, and consider lighting choices that limit UV exposure.
- Choose conservation-quality framing with UV-filtering glazing, acid-free mats, sealed backing, and sturdy hanging hardware, covered in more detail in this guide to framed art buying decisions.
- Build light habits: a weekly dry dusting, clean HVAC filters, and keeping smoke or construction dust away from display areas.
Thoughtful placement matters too. Spacing frames properly on a gallery wall keeps dust from collecting where frames sit too close to furniture or each other. Choosing durable, well-made materials from the start, a principle echoed in this piece on sustainable, artisan-made decor, pays off the same way: less maintenance, longer life.
A publisher’s take on caring for devotional art
At Divine Prints, we frame devotional prints with protection in mind from the start, because a well-built frame does most of the preventive work before a cloth ever touches it. Good framing is not decoration. It is the first line of defense.
— Griffin
Ready-framed devotional art that needs less upkeep
Archival framing does the heavy lifting long before you pick up a cloth. UV-filtering glazing slows fading, an acid-free mat keeps moisture and acids away from the print, and sealed backing keeps dust from working its way in behind the glass. That combination means less frequent cleaning and far less risk to the print itself.
Devotional pieces with this kind of protection built in are available across collections including Saint Prints, Jesus Prints, Biblical Event Prints, and Angel Prints. Each is made to order and ready to hang, so a piece meant for a prayer corner, a classroom, or a Confirmation gift arrives already set up to stay cleaner longer.
- Browse framed saint prints for patron saint gifts and devotional corners.
- Check Jesus Prints and Biblical Event Prints for scenes suited to shared living spaces.
- Look at Angel Prints for nurseries, classrooms, or gift-giving occasions.
Explore the full collection at Divine Prints to find a piece that fits your space and stays protected from day one.
Sources
- Collection care: cleaning specialty glazing — Artifact Services
- Basic care of paintings — Canadian Conservation Institute (CCI) guidance
- Use of Vellux fabric in paintings conservation — Smithsonian Institution Research
- Removing paper artifacts from frames — Canadian Conservation Institute
- Considerations in the cleaning of fine art and frames — Conservation & Design
FAQ
What do conservators use to clean paintings?
Conservators favor dry methods first, including soft brushes and Vellux fabric paired with a HEPA-filtered vacuum on low suction, since Vellux traps dirt without abrading the paint film. Wet cleaning and solvents are reserved for trained professionals and only used when the surface condition allows it.
Can I use Windex to clean picture frames?
No. Standard glass cleaners like Windex contain ammonia, which is fine on plain window glass but can damage acrylic glazing by causing crazing and yellowing, according to conservation guidance on specialty glazing. Use an ammonia-free cleaner on glass and distilled water or a suitable plastic cleaner on acrylic.
What is the 70/30 rule in art?
This term is not a recognized conservation standard, and definitions vary depending on where you encounter it. The environmental guidance conservators actually rely on centers on stable temperature and humidity, roughly 70°F ± 4°F with relative humidity near 45% ± 8%.
How do you clean a canvas picture without ruining it?
Never use liquid cleaners directly on a canvas surface. If the paint and canvas are stable, very light dry dusting with a soft natural-hair brush is acceptable, but any flaking, craquelure, or bulging means it’s time to consult a conservator rather than clean it yourself.
How often should framed art be cleaned?
There’s no fixed schedule, but framed pieces with conservation-quality glazing and sealed backing typically only need occasional glazing cleaning, since the artwork stays protected inside the frame. Light weekly dusting of the frame exterior helps reduce buildup between deeper cleanings.