Sam, actually your chimney isn't within code. The top is too close to the walls and any escaping sparks could be a fire hazard; techincally, the top should clear the highest point of the roofline by another 18". Just an FYI. (We just finished renovating the lake cottage, and this was one of the things the inspector was very adamant about. Your area may have looser laws about this, but ours, being in the middle of a forest that hasn't seen enough rain for far too long, are really tight.)