Extreme or unstable environmental conditions, particularly temperature and humidity, can be detrimental to an oil painting. Temperatures over 75 degrees Farenheit will cause the support to expand and the paint layers to crack and flake away.
You should never expose it to extreme heat, cold or humidity. Such changes in temperature will cause the frequent expansion and contraction of the canvas and the stretchers, which will in turn damage the integrity of the oil paint.
Basic recommendations from the Smithsonian Museum Conservation Institute on storing art work of all kinds: In relative humidity of 45-55% In a temperature range of 65-70 d F. And in darkness.
Oil based and latex paints are both organic thermoplastic polymers that soften by heat. Excess heat can cause decomposition, discoloration and pilling.
Oil paints dry faster in a warm atmosphere. The temperature in the room where your painting is drying should be at least 70 °F (21 °C), but the warmer you can get it, the better.
You can work with all colours in the range on your palette for between four and eight hours. These become touch dry on the canvas in 18 to 24 hours. However, remember that the thickness of the paint and the temperature of the room you are working in will also affect the drying times of your work.
The Short Answer. Yes. Temperature can and does affect paint.
5 Solutions on How to Make Oil Paints Dry Faster
ONE – Leave the painting to dry in a well ventilated open area where air circulates (a fan helps). Also, paint is slow to dry in a cold environment, so a warm room is preferable. Avoid extreme heat like hairdryers as this will only make the process worse!
Many acrylic manufacturers recommend temperatures of 60–75 F (15–24 Celsius) for storage and application, and anything below 45 F (7.2 Celsius) is certainly not recommended.
Oil paint dries under the influence of oxygen and light. This is a chemical process. Once the paint is dry this oxidation process does not stop but continues in an ageing process. Eventually this can be visible as cracking.
When temperatures get higher than 320 degrees Fahrenheit and acrylic and oil paints begin to melt, it means the surface will become soften, not solidify. It won't be a problem if you spray oil or acrylic paints when temperatures get above those ranges.
The simplest way for how to keep oil paints from drying out is to use your freezer. Just put your palette in your freezer at the end of the day! The cold temperature will slow down the rate of oxidation and evaporation, and so help prevent your oil paint from drying out.
If you store your paint in an unheated garage or storage shed and you live in a cooler climate, there's a good chance the paint will reach temperatures below the freezing point during the winter months. Oil-based paint doesn't freeze as easily, so you don't have to worry about it as much.
How to Maintain the Right Climate. The ideal humidity to store artwork is 40-50% with a temperature between 70-75 degrees Fahrenheit (21-24 degrees Celsius). This is easily achieved with a humidifier. Severe climates can cause cracked paint, warping, yellowing of paper, and mold growth.
There is no worst place than hanging your painting above a mantel, near radiators and heaters, or in bathrooms and kitchens. Heat can lead to thermal tensions, moisture reductions, and even chemical reactions within paintings that can damage both the paint layer and the support, sometimes even irreversibly.
By increasing the temperature, the dries as quickly as possible. Cooling air will also slow down drying since it will contain less fuel (see my article about how to store unused oil paint in the freezer).
One of the most common reasons for sticky paint that won't dry is paint that has been applied too thick, in too many coats, too quickly.
Indeed, cold temperatures can affect paint. More specifically, lower temperatures impact the paint's consistency and drying time. To play it safe don't paint outside when it's below 35 degrees Fahrenheit. Oftentimes, paint manufacturers will suggest a low-temperature paint additive to normalize the product.
They found that higher temperatures produced faster drying rates than low temperatures.
So how does it affect how your paint dries? Humidity affects not only the drying of acrylic and latex paints but also that of oil-based paint. The reason being is when there is a great deal of humidity, the paint is exposed to a greater amount of water vapor.
The short answer is. . . You should wait until the paint is completely dry all the way through. If you don't, you risk having new layers lift or damage previous layers when you're painting. Even if that doesn't happen, the layers may not adhere properly to each other, and they could separate as they age.
It may seem to be a good idea to use a hair dryer to dry oil paints. But it will not work very well. Oil paints dry because of oxidation reactions the evaporation of water caused by the heat of the hairdryer will not speed up the drying time and may even cause your painting to crack.
The best way to dry oil paints is to expose an artwork to direct sunshine for a few hours. Sun won't damage paint layers, but will help to speed up drying time.