There are more weather conditions to consider when starting a painting
project than whether or not it’s going to rain. Even a clear day might not
be a good day to paint if the temperature and humidity aren’t right. These
are some of the ways temperature and humidity can affect a fresh coat of
paint. Keep them in mind when planning your next painting project.
►► Painting in high-humidity environments can create multiple
issues, including increasing drying time by introducing more
moisture into the paint.
►► Humid conditions also hurt the adhesion of paint to wood
surfaces because the moisture can be absorbed into the
wood, causing bubbling or peeling.
►► In some cases, humidity can cause surfactant leaching, which
results in a white or brown discoloration on the paint’s surface.
►► When high humidity is combined with low temperatures,
condensation can occur on the paint’s surface, which creates
more difficulties in terms of the paint’s drying and adhesion,
compromising its protective qualities.
►► Temperatures on either extreme can have wildly different
effects on how fresh paint dries. Always check the weather
forecast before beginning any painting project so you know
what to expect.
►► Extreme cold can prevent paint from drying properly
because moisture inside the paint can freeze before it
►► Make sure the temperature will be at least 45 degrees
Fahrenheit for at least 48 hours if you are using oil-based
paints, or at least 50 degrees Fahrenheit for latex and acrylic
paints. Some paints are formulated for lower temperatures,
however, so check with the manufacturer.
►► Time your work for when temperatures are expected to
remain at a suitable level for at least two or three hours
►► Extreme heat can cause problems with drying paint by
evaporating moisture in the paint too quickly. This can
cause the top layer of paint to skin over before the layers
underneath dry sufficiently. It also can produce blisters,
cracking and other imperfections.