I have a 1927 brick home with original lath and plaster walls. I don't believe there to be much if any insulation in the walls. I have 8" base and 8" crown molding. How do I go about getting insulation in the walls with out doing a complete renovation? I am afraid the crown molding wont make it through the removal if I need to put in holes behind it and behind the base molding. Any advise will be greatly appreciated.