Not a clue, Steve. I haven't had to re-caulk anything on my Beaver, so my only experience is with Dicor on my previous 5ver and (current) small TT. I'll bet a call to BCS would reveal their "Caulking or Sealing Schedule" for all things Beaver. Would be informative. Had BCS re-install my front clearance lights last fall as I complained of a persistent, intermittent window water leak. Paul (the mechanic) correctly saw that the clearance lights were the problem. So new lights and caulk job by Paul fixed our window leak. Much easier than replacing the window!!