Lew1201, is your son' s skin under the wafer irritated? You mentioned dry skin peeling off. I had an allergic reaction to several different types of wafers (brands) before I landed on one that works for me (Coloplast Sensura - 1 piece pre-cut) Great for sensitive skin. My Ostomy Nurse (Nurse Practitioner) called me in a prescription for Kenalog Spray. This stuff works wonders with clearing up irritation/infections, etc. Hard to find, though.
Also, if he finds that tape is too irritating, have him look into HydroFrame® Hydrocolloid Flange Extensions. Welland Medical makes these (can be ordered through Edgepark Medical - order #XWAF H33) or Securi-T Hydrocolloid Skin Barriers
Item # EI200344 - also through Edgepark Medical. Phone # 800-321-0591. You can also call the companies to get samples. Edgepark should have all their numbers. Welland Medical has a website: www.wellandmedical.com They are a British company. Edgepark is the only one I know that sells their products in the US.
Good luck! Mary