Learn more about how to install insulation in open walls before cold weather season.

Ways to insulate a wall Adding wall insulation to your home is essential and there’s plenty of options to choose from.

Older homes with solid external walls tend to leak warmth straight through masonry. Internal wall insulation provides a solution.

The previous owner of this house wisely glued 2-inch-thick foam insulation to the concrete basement walls, then covered that with an open-cell foam board. (Courtesy of Tim Carter) ...

Your answer concerned the use of foam insulation and the application of rigid foam board to the existing wall surfaces. My question is whether or not you could do the same thing by using 2x4 or ...