The exposure of cedar shakes refers to the portion of each shake that is visible and exposed to the weather. The right exposure depends on several factors, including the roof pitch, the shake thickness, and the desired aesthetic. A higher roof pitch allows for a greater exposure, while a lower pitch requires a smaller exposure to ensure proper water shedding. Thicker shakes can also have a greater exposure than thinner shakes. Ultimately, the best exposure for your cedar shakes should be determined by a qualified roofing contractor who can assess your roof's specific conditions and your preferences.