Some 24 years ago, I became general manager of a countertop fabrication shop, Western Plastics in San Francisco. At that time, I had only a couple of years’ experience as a project manager for a cabinet and millwork shop, and my knowledge of countertop fabrication was somewhat limited. I was fortunate to be able to spend several weeks working with the previous manager, who was generous in sharing his knowledge with me at the time.

The company had been a plastic laminate countertop fabricator for decades, and had begun fabricating DuPont Corian a few years before I came on board. I learned about plastic laminate and solid surface fabrication by supervising, managing and selling countertops, and by asking a lot of questions. I got involved in the Decorative Laminate Products Association (DLPA), a trade group that no longer exists. I also made a point of attending as many fabrication training seminars as I could. Over time, my understanding of plastic laminate and solid surface fabrication deepened. Later, I joined the International Solid Surface Fabricator’s Association (ISSFA), and learned even more.

However, I learned very little about marble and granite fabrication early in my career, as the company I worked for did not sell such countertops. Whenever we were asked about natural stone, we referred the customer to another firm that handled these types of materials.

Fifteen years ago, when I started my own business, I chose to specialize in repairing and renovating solid surface countertops. However, in recent years, my business has received more requests to provide service on natural stone countertops, and when we decided to take that plunge, we were faced with the challenge of learning about the remarkably complex and rapidly changing stone business. In particular, we needed resources to learn about the physical characteristics of various stones, so that we could provide truly professional service to stone consumers.

What I’ve found to be the greatest difference between understanding solid surface and understanding natural stone is the incredible variations in the types of stones that are sometimes used for countertops. Solid surface materials are consistent and predicable, whereas natural stones exhibit wide variations in performance characteristics. Before I delved into the subject, I thought most kitchen countertops were made of “granite,” that marble was less durable and suitable only for vanity tops, and that there were a few other stones used occasionally. I assumed that various granites differed mostly in color and pattern, but that otherwise they performed pretty much alike.