What is the best way to insulate solid masonry walls?
— Lisa H. J.D.: The methods to insulate and finish the walls of a masonry garage that is aboveground or a basement are similar. The major difference is the use and location of a vapor barrier to keep out moisture. If the insulation gets saturated with moisture, it is less efficient. For a basement, or for aboveground walls in a hot humid climate, the moisture source is outdoors. In this situation, it is often better to have the vapor barrier between the insulation and the outside wall. In most other climates, the vapor barrier is usually between the interior wall surface and the insulation because the moisture comes from indoors. If money is no object, several companies offer complete wall-insulation and finishing systems that are professionally installed. It often takes about two weeks to complete the project. Most of the time is used for the wall preparation, electrical and plumbing tasks. Once all this is complete, it takes only a day to two to install the wall system. The insulati
