I own a beach condo in South Carolina the walls are all concrete block, the building was constructed back in the early 1960s. I was thinking of dressing up one of the walls with laminate flooring. The wall in question is an interior common wall so it is not exposed to the elements. It has multiple coats of paint and seems to be very dry. My question is do I need to install a vapor barrier under it or can I apply directly to the concrete wall with adhesive. Again the wall appears to be very dry and is connected to the next unit so it is not exposed to the weather. Any ideas on how to approach this would be really helpful.