For bathrooms, ASHRAE 62.99 recommends that you exhaust 25 cubic feet per minute (cfm) with a continuously operating fan, or 50 cfm with a fan that you turn on and off as needed. Note that you might incorporate a bath fan into your overall ventilation strategy.
Attic work is hot and tiring. Work in the morning before it gets hot and keep lots of cool liquids handy to avoid over heating.
When clamping long or wide panels with bar clamps, a dowel inserted crosswise between the jaws of the bar clamps and the wood will help center the pressure and keep it uniform. Use dowels about as thick as the thickness of the wood you are gluing up.
Most dedicated wood lovers insist that the best finish for a wood floor is a floor-formulated tung oil. Derived from the nut of the tung tree, tung oil penetrates the wood and bonds with the surface fibers. More giving than a synthetic finish, a tung-oiled floor will evolve with wear rather than cracking or chipping. Originally developed as as ship sealant, tung oil naturally provides excellent protection from spills, water, traffic, and dirt. Cleanup is simple, with a little clear vinegar in water or an oil soap mixed with water.