Painting the exterior of your home is a huge project, and you may have postponed it due to time or budget constraints. But now that temperatures have dropped, is it too cold to paint out? Below you will find advice from paint professionals on the ideal temperature range for exterior painting, the lowest temperature for painting or staining and general advice for painting and painting the exterior of your home.
How low is it?
To a certain extent, the optimal temperatures for exterior painting vary depending on the type of paint. “When undertaking external painting projects, keep in mind that the optimal temperature for latex paint falls between 50 and 70 degrees F, while the optimum temperature for oil-based paint is between 45 and 90 degrees F”, explains Tina Nokes, owner of Five Star Painting in Loudoun, VA. However, she says that some paints are classified up to 35 degrees.
When you go below 35 degrees, Nokes says you can meet different problems. “Risks that the paint takes too long to cure, which attracts insects, dirt, dirt and other debris on the wet surface,” he says. “Oil-based paints thicken even at low temperatures, causing a stiffer brushing, a heavier application and less coverage per gallon.”
According to Mike Mundwiller, Benjamin Moore Field Integration Manager, you should always check the information about the product you wish to use. “While some exterior paints can be applied up to 35 degrees, it is important not only to be aware of the ambient temperature but also of the temperature of the surface being painted.” In addition to the current temperature, Mundwiller advises painters to be aware of the expected temperature, since this will determine how long it will take to dry the paint.
Follow the sun and avoid the hottest part of the day
“Following the sun around your home prevents you from painting in direct sunlight and overheated surfaces, which can be a problem even at lower temperatures,” explains Nokes. What does it mean to follow the sun when you are painting? “In other words, move around the house behind the sun as it moves so that the surfaces are warm but not so hot that the paint dries too quickly.”
The hottest part of a winter day seems like the perfect time to paint, but Nokes advises against it. “While it may be tempting to paint in the hottest parts of the day, be sure to leave enough time to dry the paint before sunset, which will also bring cooler temperatures and dew formation.”
If you have to paint when it’s cold
“If you have no choice but to paint at temperatures below 45 degrees F, buy the latex paint specifically formulated to run at temperatures up to 35 degrees,” advises Nokes. “This paint contains coalescing agents that support filming attributes during low temperatures.” Different types of paints are classified for different temperatures and she says it is vitally important to use a paint rated for the colder climate.
When the air temperature is 35 degrees F, the substrates may be colder. “Before painting, check that air, surface and material temperatures are above 35 degrees F and at least 5 degrees F above the dew point,” recommends Mundwiller. “Do not apply when air or surface temperatures could fall below 35 degrees F within 48 hours.”
Suggestions for external painting
“Before painting, remove surface contaminants with an appropriate cleaning agent, rinse thoroughly and allow to dry”, advises Mark Eichelberger, Senior Product Manager at Sherwin-Williams Consumer Brands Group. “Remove the peeled or damaged paint, sand the shiny surfaces to make it opaque and make sure that cracks and imperfections are patched or caulked.” To avoid dripping or occasional splashes, recommend starting at the top and proceeding downwards.
When painting the vinyl coating, Eichelberger says that it should be redesigned with a color similar to the original color to avoid the absorption of excess heat, which prevents instability or deformation.
What about coloring?
There is also a temperature limit during coloring at low temperatures. “The application of stain finishes becomes more difficult as the temperature gets colder, as it will not dry out or stick to low temperatures,” says Jenny Burroughs, Senior Product Manager at Architectural Coatings, PPG. Depending on the product, you can apply a stain when the temperature is below 40 degrees F.
It is important to protect the exterior wooden surfaces of your home by applying a stain or sealant before the temperatures start to fall, as cold and snow can cause flaking, resulting in moisture intrusion and rotting of the wood.
Burroughs also recommends evaluating the exterior wooden surfaces of your home to see if they are vulnerable before staining or sealing. Some key signs that your wooden exterior surfaces in your home need to be finished include:
*The water is absorbed and is not mistreated by the surface.
*The paint and / or stain peel off, rise or rise from the surface.
*The areas of the house look faded or discolored.