Best Temperature To Paint Exterior Siding

If your house was built before 1978 there might.

Best temperature to paint exterior siding.

For an oil based paint the best temperature to apply is between 40 and 90 degrees fahrenheit. Ideal temperatures the ideal time to paint your house is when you have a day with low to moderate humidity no wind and temperatures ranging between 60 and 85 degrees fahrenheit. The best drying will occur when the relative humidity is 40 to 70. As an extreme example a dark surface painted in direct sunlight will cure so fast that brush marks remain in place and uneven glossiness called paint flashing will occur.

Optimal relative humidity rh levels for exterior painting tend to be in the 40 to 50 percent range. Painting when it s too cold can cause the paint to not adhere well to the surface resulting in cracking and peeling. Painting during hot weather can cause latex paint to dry too fast resulting in brush marks and clumps of paint on the paintbrush. Dirt mildew and chalky old paint prevent fresh paint from adhering properly.

Tie back shrubs and tree limbs. The usual recommended temperature range for latex paints the type used most often is 50 f to 90 f says rico de paz our paint expert. As for humidity levels the best drying will occur between 40 and 70 percent humidity. The maximum and minimum recommended temperatures for exterior paint vary depending on the type oil or latex and specific brand of paint used but a general rule of thumb is that oil based paint can be applied when the temperatures are between 40 90 f and latex between 50 85 f.

That s mainly for exterior painting. For latex based paints it s 50 to 85 degrees. The best temperature range for painting outdoors with latex paint is from 50 to 85 f.