I’ve used Palo Alto Roofing for over 15 years.
More than once I’ve called him in the middle of a downpour (usually the first of the season) and have been able to schedule an appointment at short notice to take care of a leaky roof while it was raining.
John has always done a good job and handled himself with professionalism and cheerfulness.  He conducts himself as a member of the community with the attitude of a helpful neighbor.  His fees are reasonable.  He gives honest appraisals of work that needs to be done and offers tips on how to minimize the cost, including DIY tips on regular maintenance.