Watercolor paintings are more durable than most people think. With proper care, a watercolor created today will look vibrant and beautiful for well over a hundred years. Museum collections include watercolors from the 18th century that still glow with the same luminosity they had the day they were painted.
That said, watercolor does require some specific care that differs from oil or acrylic paintings. The pigment sits within the paper fibers rather than on top of a sealed surface, which makes watercolors more sensitive to light, moisture, and physical contact. Here’s everything you need to know to protect your investment and enjoy your watercolor for a lifetime.
Framing: Your First Line of Defense
The single most important thing you can do for a watercolor painting is frame it properly. A well-chosen frame does more than make the painting look beautiful — it creates a sealed environment that protects the paper and pigment from dust, humidity, and physical damage.
UV-protective glass or acrylic is essential. Standard glass allows ultraviolet light to pass through, and UV light is the primary cause of pigment fading over time. Museum-grade UV-filtering glass blocks 97–99% of UV radiation, dramatically slowing the fading process. Tru Vue Museum Glass and Optium Museum Acrylic are two widely respected options. They add cost to the framing, but they’re the best investment you can make in the longevity of your painting.
Acid-free matting should always be used between the painting and the glass. The mat serves two purposes: it creates a visual border that enhances the presentation of the painting, and — critically — it holds the glass away from the paper surface. Paper and glass should never touch directly, because moisture can become trapped between them and cause mold, foxing, or the paper adhering to the glass.
Use acid-free matboard and backing board exclusively. Acidic materials will cause yellowing and deterioration of the paper over time. Any reputable frame shop will use acid-free materials as standard practice.
Archival tape or corners should be used to attach the painting to the backing board. Never use regular tape, rubber cement, or adhesive that can damage the paper. Acid-free linen tape or archival photo corners are the professional standard.
I cover framing in more detail in my companion post: How to Frame Watercolor Paintings Without Damaging Them
Choosing the Right Location
Where you hang a watercolor matters as much as how you frame it.
Avoid direct sunlight. Even with UV-protective glass, prolonged direct sunlight will eventually cause some fading. The best locations receive indirect natural light or are illuminated by artificial lighting. A wall that faces away from windows, or a room with north-facing light (which is softer and less intense), is ideal.
Avoid high-humidity areas. Bathrooms, kitchens near cooking surfaces, and laundry rooms expose paintings to moisture that can warp paper, encourage mold growth, and damage pigment. If you want art in a bathroom, consider using a giclee print behind UV-protective glass rather than an original.
Avoid extreme temperature fluctuations. Don’t hang watercolors above radiators, heating vents, or fireplaces. Rapid temperature changes cause the paper to expand and contract, which can lead to cockling (waviness) and stress on the frame seal.
Interior walls — those that don’t share an exterior surface with the outside of the building — are generally the best choice. They maintain more consistent temperature and humidity levels throughout the year.
Day-to-Day Care
Watercolors require very little ongoing maintenance. Here’s what to do and what to avoid.
Do gently dust the frame and glass periodically with a soft, dry microfiber cloth. Dust that accumulates on the glass can eventually create a haze that dulls the appearance of the painting.
Don’t spray cleaning products directly onto framed art. If the glass needs more than dry dusting, spray a small amount of glass cleaner onto the cloth (not the glass) and wipe gently. This prevents liquid from seeping behind the glass and reaching the painting.
Don’t touch the painted surface. Oils from your fingers can leave permanent marks on watercolor paper. If the painting needs to be removed from its frame for any reason, handle it by the edges only, wearing clean cotton gloves if possible.
Do check the frame periodically — perhaps once a year — to make sure the seal is intact and no dust or moisture has entered. If you notice condensation inside the glass, the seal has been compromised and the painting should be reframed.
Long-Term Storage
If you need to store a watercolor painting for an extended period — during a move, a renovation, or between hangings — proper storage is important.
Store paintings flat, not upright. Leaning an unframed painting against a wall for a long period can cause it to bend or warp. Place acid-free tissue paper over the painted surface, then sandwich the painting between two rigid boards (acid-free foam core or archival mat board). Store in a cool, dry, dark location. A closet in a temperature-controlled room is ideal. Avoid attics (temperature extremes), basements (moisture), and garages (everything bad).
If the painting is framed, store it flat with the glass facing up. Place padding between stacked frames to prevent scratching.
If Damage Occurs
Despite your best efforts, accidents happen. If a watercolor sustains water damage, mold, foxing (brown spots caused by fungal growth or oxidation), or physical tearing, consult a professional art conservator before attempting any repair. Amateur restoration attempts often cause more harm than good.
The American Institute for Conservation (AIC) maintains a directory of certified conservators at culturalheritage.org who can assess and treat damaged works on paper.
The Bottom Line
Caring for a watercolor painting is not complicated, but it does require intention. Frame it well, hang it thoughtfully, keep it clean, and protect it from sunlight and moisture. Do these things, and the painting you buy today will be bringing beauty into your home — or your grandchildren’s home — for generations to come.
