Paint, stains and varnishes
The windows are the part of the outer wall that can be most difficult to maintain. This is because they are most exposed to the changes in humidity between the inside and outside, in addition to being exposed to strong sun and rain.
Do not paint on wet windows! When they come from the factory, the windows have a moisture content of about 12%, dry enough that one can paint/stain without further drying. Note, however, that during construction the windows may have absorbed moisture and must first be allowed to dry out before painting/staining. For later maintenance, see separate sheet: Standard paints, stains and varnishes for ND Main Doors Installation and User Manual for ND Main Doors