looking for siding and 'beam work' referrals in marin county

hello friends. i was wondering if some of you out there have had some great experiences with folks who repair/replace siding (in or around marin county) and would kindly pass along their names? i also have a portion of a beam in my atrium that is rotting through and in need of repair as well. do the same people do this kind of work, or is this the work of a 'specialist'? Please email me directly at: jh2i3 at yahoo dot com. thanks in advance!!