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

You will need to frame a block wall with a header (such as a 2 by 4 or 2 by 6 secured to the wall studs), a wood or concrete sill and at least one side jamb.

Ways to insulate a wall Adding wall insulation to your home is essential and there’s plenty of options to choose from. They all offer improved energy efficiency, but some are easier to install ...