Colder termperatures and staining

[SolarAndWood]

Is it the stain or the material or both that is affected by the cold temps? Last year, I sprayed 4000 board feet of pine ship lap in a closed up shop with the salamanders running to keep it at 50. Had to quick back brush every board. It adhered fine but was a PITA to apply and seemed like I went through a lot of stain to get it to cover. Yesterday, I sprayed about 2000 board feet of the same material in the same shop but with the windows open and maybe 5 degrees warmer. No back brush required and I used 1/3 less stain.

I'm assuming that the stain was pretty close to the same temperature both times as I kept it in the house until I was ready to spray. Is the difference the temperature of the material as I likely only got the air up to 50 degrees last year or maybe air changes had something to do with it?

 

[smokinj]

Probably more to to with the board's them self. Moisture content that is. Moisture of air is another big factor.

 

[SolarAndWood]

The batch last year was probably barely above freezing. It was tight stacked about 4' high. So, essentially I guess I was trying to spray on partial ice. Gotta say, in addition to how it layed down, it was a lot nicer spraying with the windows open and natural light than with two salamanders going and work lamps. I could barely see far enough to spray.