Grothouse Debuts Wood Surfaces Training Seminar for Design Professionals. The comprehensive educational session covers Wood Countertops, Butcherblocks and Bar Tops. The program, led by company owner Paul Grothouse, offers an in-depth examination of various wood species, lumber processing techniques, types of wood countertop finish, construction styles, eco-friendly products and L.E.E.D certified products. The seminar is certified by the National Kitchen and Bath Association (NKBA) and each participant is eligible to receive 0.5 CEU credits for attending the program.