Apply stain only at the proper temperature. For most stains, 70 degrees Fahrenheit is the optimum, with the safety range from 50 to 90 degrees Fahrenheit. Stains do vary, so check the label first. Avoid high humidity and staining on hot surfaces.
Get PriceThe optimal painting temperature would be 77ºF, but it is still acceptable to paint within a wide range of temperatures. Since temperature varies more widely outside, that is where most issues arise. We recommend planning your painting project for temperatures ranging from 35ºF to 100ºF and when humidity is as low as possible.
Get PriceLow temperatures are also detrimental because they lengthen the drying time. If you’re staining your deck in the spring or fall, wait for a day with highs above 50 degrees Fahrenheit. Also, make sure freezing temperatures aren’t in the forecast for that night.
Get PriceGenerally speaking, the temperature needs to be at least 40 degrees. There are a lot of variables that go into applying stain to the siding: Surface temperature - has the surface had time to get caught up with the air temp? Temperature change - will it be dropping any lower within 2 hours?
Get PriceColder temperatures and moisture on the surface can also result in staining or mildew. Some manufacturers now claim that certain paints will cure in temperatures as low as 35° F. But what about an.
Get PriceIf it’s too hot outside, specifically above 90 degrees, you run the risk of the stain drying too quickly and causing the stain to improperly penetrate the surface, distribute unevenly, and will appear blotchy. The stain becomes less effective in this case.
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