Bill Walls was very knowledgeable and very confident he could help me with a samll water leak we found under the side door stairs sill of our 50 year old bungalow. Bill was VERY thorough and really knows his stuff! The two man crew that did the work knew exaclty what they were doing and completed the work in one day, cleaned up and were very polite. They also sent Bill pictures of their progress during the day. I thought this an interesting way to ensure the job was being executed as precisely as Bill had promised me.