How to prevent paint by numbers from getting wet?

 How to keep paint by numbers from moisture? It is difficult for ordinary families to meet the constant temperature and humidity conditions of art museums and other professional institutions. In the rainy weather, it will be better for families with conditions to use a dehumidifier. If not, using the drying function of the air conditioner will also help. Be careful not to expose the oil painting to direct sunlight. Keeping the air dry is also very important.

The following is also about how to save paint by numbers and prevent moisture:

preservation method:

1. 1. Personalised paint by numbers canvas can be used and two layers of natural beeswax pre-dissolved in turpentine can be thinly coated on the back, which can completely prevent damage caused by the intrusion of moist air.
2. The oil painting should avoid long-term direct sunlight because ultraviolet rays are very destructive to the color, which will cause fading and discoloration.
3. The room where paint by numbers is stored should be ventilated and moisture-proof, and as far away as possible from the bathroom and kitchen. Take care to prevent damage to the canvas caused by dust, oil fume and mold. The room should be kept at a certain temperature and humidity. The damp painting must be slowly dried in the shade and avoid exposure to the sun, otherwise, the picture will easily fall off.
4. Just paint by numbers must not paste the two pictures together. Once the temperature rises, the pictures may stick together, causing the paint to fall off and the picture to be damaged.

5. When rolling the oil painting, use a paper tube of four or five inches or more. The canvas is flushed inside, the picture is flushed outside, followed by the paper roll, and then wrapped with a plastic sheet to prevent the painting from cracking.

6. If the oil painting on the wall gets dusty, you can wipe it gently with a slightly damp clean cloth. If there is oily smoke on it, you can try to scrub it gently with light soapy water and clean water, then quickly take the absorbent thing to soak up the water on the screen, and then use the electric fan to blow the water off. If you encounter old, cracked oil paintings, you must use less water and dry-wipe the parts. Someone buys professional varnish for paint by numbers for maintenance. This is ok, but before spraying, be sure to wipe the screen clean with a clean cloth. In addition, some professional auction houses and galleries can also help with cleaning.

Paint by numbers works will inevitably turn yellow and dark during the preservation process, which is the result of oxidation of the surface varnish. So far, there is no varnish that will not be oxidized. Removing the old varnish layer and re-glazing is the only way to restore the original appearance of the work. Commonly used cleaning solvents are:

1. Turpentine. It has a weak effect on old oil paintings, but has a strong effect on new color layers, especially after heating with hot water, the effect is better.
2. Refined gasoline and benzene (toluene, xylene). The solubility of resin is stronger than that of turpentine.
3. Ethanol (anhydrous alcohol) and methanol (wood alcohol). It is a strong solvent for resin.
4. Acetone and chloroform. Can quickly dissolve resin and oil layers. The cleaning agents sold in art supply stores are generally a mixture of several solvents, and strong solvents cannot be used alone. Modern paint by numbers mostly uses resin varnish, which can be washed away with turpentine. The older generation of oil painters mostly uses oil-based varnish, which requires a mixture of turpentine and anhydrous alcohol. Acetone is only used as an additive when cleaning ancient works.

Wiping method: Use a white absorbent cotton ball (available in medical stores) to dipped in cleaning detergent and wipe it circularly from one corner of the screen. The time of wiping each part is not too long, so as not to damage the color layer. Replace the cotton ball with a new one immediately after it is stained with yellow varnish. Most of the old varnish can be washed off in the first pass, and a strong solvent can be added to the stubborn part in the second pass. The stains of paint by numbers and flies and dung stains caused by squeezing damage can be removed with a knife.