I highly recommend Palo Alto Roofing Company.  John Font put a new roof on my home many years ago and did an outstanding job.  I recently called him for an estimate for a leakage.  He responded promptly the same day.  He quickly repaired the leakage issue and moreso did not charge me for the work done even though my warranty had expired.  It is rewarding to have work done by a professional with a keen ability to identify the problem and resolve it adeptly. Do not hesitate to hire him for your roof work.  You will be working with an expert who excels in attentive customer service.  By the way, the roof he put on many years ago is of excellent quality.  I have referred hime to my friends because of the quality of the work.