Whiteboards are workhorses. They get written on, erased, written on again, drawn on with the wrong marker, and ignored for cleaning for longer than they should be. The result is familiar to anyone who's walked into a classroom or meeting room: a board that looks more gray than white, with ghost marks from last week's lesson still faintly visible beneath today's new content.
The good news is that most whiteboard cleaning problems — including ghosting, permanent marker accidents, and stubborn dry erase residue — have straightforward solutions that don't require special products. This guide covers how to clean both dry erase whiteboards and glass boards, with step-by-step instructions for everyday maintenance, deep cleaning, and the specific problems that tend to cause the most frustration.
Most new whiteboards ship with a clear protective plastic film over the writing surface. This must be removed before use — writing on the film will damage both the film and, in some cases, the surface beneath it.
For routine cleaning after normal dry erase use, the process is simple:
For porcelain steel surfaces — the material used in MooreCo's Hierarchy Shapes Desks and most of our writable surface products — any of the following work well for everyday cleaning: glass cleaner, alcohol-based cleaners, non-abrasive ceramic stovetop cleaner, or mild soap and water. What to avoid: caustic or abrasive cleaners, acetone, ammonia, and harsh detergents, all of which can damage the surface coating over time.
How to remove ghosting from a whiteboard:
Prevention is more effective than treatment: erase daily, clean with a damp cloth weekly, and replace dry erasers when they become saturated with ink (a dirty eraser spreads ghosting rather than removing it).
Dry erase markers contain a non-polar solvent that keeps the ink from bonding permanently to non-porous surfaces. When you draw over permanent marker with a dry erase marker, that solvent reactivates the permanent ink and allows both to be wiped away together. It's a practical application of the principle that like dissolves like — non-polar solvents dissolve non-polar inks.
Step-by-step permanent marker removal:
If the dry erase marker method doesn't fully remove the stain — particularly on older or lower-quality whiteboard surfaces — isopropyl alcohol applied with a microfiber cloth is the next step. On porcelain steel surfaces, permanent marker almost always comes off completely with the dry erase method.
Glass boards are generally easier to maintain than dry erase whiteboards because the glass surface is non-porous and highly resistant to staining and ghosting. Daily wiping is sufficient for most classroom and office use.
Glass boards should not be cleaned with abrasive materials, paper towels, or cleaners containing paint remover. For standard dry erase marks, a slightly dampened cloth is often sufficient without any cleaning product.
Soil marks — paint, oil, crayon, tape adhesive, and similar contaminants — that don't come off with standard glass cleaner can be removed safely using denatured alcohol or a dedicated glass cleaning fluid. Apply to a soft cloth rather than directly to the surface, rub gently in a circular motion, and rinse thoroughly with clean water.
Under no circumstances should cleaners containing paint remover, abrasives, or ammonia be used on glass boards — these can etch or cloud the glass surface permanently.
If your glass board has a matte projection surface, the cleaning process is slightly different from standard glass:
For black or colored glass boards: standard dry erase markers may be difficult to read on dark surfaces. Use neon or high-contrast markers specifically designed for dark writing surfaces. Some colored glass boards ship with a set of neon markers included — check your product documentation.
Regardless of surface type, these practices will extend the life and performance of any whiteboard or glass board:
These are the most frequently searched questions about whiteboard cleaning, answered directly.
Can you use rubbing alcohol to clean a whiteboard?
Yes — isopropyl alcohol (70% concentration) is one of the most effective whiteboard cleaners available and is safe for use on porcelain steel and glass board surfaces. It removes ghosting, residue, and even permanent marker effectively. Apply it to a microfiber cloth rather than directly to the surface, and rinse with clean water afterward. Avoid using alcohol on melamine or painted whiteboard surfaces, as repeated use can degrade the coating over time.
Why does my whiteboard not erase properly?
Poor erasability is almost always caused by one of three things: (1) ghosting buildup from infrequent cleaning — use a deep cleaning treatment with isopropyl alcohol; (2) a saturated dry eraser that's redistributing ink rather than removing it — replace or wash the eraser; or (3) low-quality markers that leave heavier residue than standard dry erase markers. On porcelain steel surfaces, erasability issues are rare because the surface is non-porous and doesn't absorb ink. On melamine surfaces, degradation over time is the likely cause.
What is the best whiteboard cleaner?
For porcelain steel surfaces: isopropyl alcohol, glass cleaner, or non-abrasive ceramic stovetop cleaner (like Bar Keepers Friend) all work well. For glass boards: liquid glass cleaner is ideal. For all surfaces: a dedicated whiteboard cleaner spray is a reliable option and is formulated to be safe across surface types. Avoid any cleaner containing ammonia, abrasives, or paint remover.
How do you fix a whiteboard with heavy ghosting?
For light ghosting, isopropyl alcohol on a microfiber cloth applied with firm circular pressure usually clears it. For heavy ghosting on porcelain steel, a non-abrasive ceramic cleaner can restore the surface significantly. For melamine whiteboards with severe ghosting, the surface may have degraded past the point of full restoration — a whiteboard conditioner or resurfacer product can help, but if ghosting is persistent and the board is old, replacement is often the more cost-effective solution.
Does the dry erase marker trick really work for permanent marker?
Yes — and it works consistently on non-porous surfaces like porcelain steel and glass. The non-polar solvent in dry erase markers reactivates the permanent marker ink, allowing both to be wiped away together. The key is timing: wipe within 5 seconds of applying the dry erase marker, before the solvent evaporates. On porous or lower-quality whiteboard surfaces, it may require multiple passes.
Can I use WD-40 to clean a whiteboard?
WD-40 can remove permanent marker and heavy ghosting from whiteboard surfaces, but it leaves an oily residue that must be removed thoroughly with glass cleaner afterward — otherwise it attracts dust and makes dry erase markers harder to erase in the future. It's a useful emergency option but not a regular cleaning product for whiteboards.
Not all whiteboard surfaces are equal in terms of maintenance requirements. Melamine boards — the most common budget option — are prone to ghosting, staining, and surface degradation over time. Porcelain steel boards, the surface used across MooreCo's whiteboard products, are non-porous, resist ghosting, accept magnets, and are covered by a lifetime surface guarantee. Glass boards are the premium option: completely non-porous, the easiest to clean, and virtually immune to ghosting.
If you're equipping a classroom or office where boards will see heavy daily use, the long-term maintenance cost of a melamine board — in cleaning time, resurfacing products, and eventual replacement — often exceeds the upfront price difference compared to porcelain steel. See our full range of writable surface products at moorecoinc.com to compare surface options.
For a broader look at how whiteboards and glass boards fit into an active learning environment, see our posts on 21st century classroom design and how to set up a blended learning classroom.