Building codes vary ... so open-wall gable vents and attic roof vents may no longer be feasible. That’s when other attic ventilation options come into play. Rafter vents, or insulation baffles ...
Joists are a good option if you have a stick-frame roof and want the option to modify the structure later. Compared to trusses, attic spaces defined by joists are simpler to renovate and restructure.
Knowing how to insulate an attic while leaving adequate clearance can be tricky. That's because insulating it to the proper R-value can cause a dramatic loss of headroom if you limit yourself to ...