The cupola roof makes your gazebo more spacious and the clerestory windows all around add beautiful lighting. Standard roof overhang is six inches, and is made of 1 x 6 redwood boards. If you want to order shingles (extra charge), ours are 3/8-inch thick, hand-cut redwood that are four to six inches wide. You will receive 1000 to 3000 single shingles depending on the size of your gazebo (shingles cannot ship attached to roof panels and must be installed individually). We will not charge any extra shipping when you order the shingles for your gazebo.