A few years ago I put down spruce t&g as a finished floor. The wood was not seasoned properly so the joins opened up over time. Nonetheless it did turn out quite well.
In the meantime, I have built a new house. It is along the style of homes built by the wealthier fish merchants in the area. The style is about 100-125 years ago. In keeping with the look, I am planning to lay down 6 inch wide spruce t&g. It has been drying in my attic now for over 5 months (properly racked) and I plan to put it down next month. I was planning on blind nailing the tongues with flooring nails while face nailing with rose-head wrought iron nails (1.5 inches long). Right now I do not have stress grooves cut in the back of the boards - but this can be done if necessary.
Should I think about using adhesive in conjunction with the metal fasteners? If so, how should it be applied? Will the nails hold well enough, or should I use drywall screws (as I did before) that will be covered by plugs? Any comments or suggestions on these particular matters or anything on laying plank spruce flooring would be greatly appreciated.