Your Welcome, I use it undiluted at 70 to 85 degrees, and a relative humidity around 30% or less. Common weather for Central Oregon summers. Dust and pollen are real problems. I work in a plastic lined garage with a filter running all the time. The varnish is not used from the can, but filterd through a paint filter into a foam bowl. Just before varnishing I wet the garage floor, to avoid kicking up dust. Dust free finish??? No, but close enough to go paddling. Enjoy your project, Jerry