Cold Air Coming From Walls

Most people notice this in the winter when cold air blows through a wall outlet on an exterior wall.

Cold air coming from walls.

With cold air inside the wall and warm air on each side in the house heat moves through the drywall which has a low r value and warms up the air in the cavity. Department of energy s doe oak ridge national laboratory. When you combine that with the. Where could it be coming from.

Even if a wall or ceiling is sufficiently insulated the insulation may have been cut away to make room for the electrical boxes which means these spots become conduits for cold air to pass through from the outside. Hole in your ceiling. Or in the summer when the hot 100 f air finds its way into your cool inside living space. Gap around just six ceiling boxes is the equivalent of cutting a 4 in.

Sometimes especially in older homes and on exterior walls light switch boxes and electrical outlets can let in outside air if they are not insulated properly according to the u s. And on walls where there is no insulation or insufficient insulation cold air circulating inside the wall finds a perfect pathway into living. Cold air coming through cracks and crevices in a window will lower the temperature of a room and make your walls cold. Air infiltration occurs when outside air finds its way inside your house.

Cover your windows with thermal draperies. The small air gaps around electrical boxes on exterior walls and ceilings leak more air than you might imagine. The warm air then rises into the attic a process called the stack effect. It s winter and your home is closed up tight to keep out the cold air but you still feel a draft.

The reason for this is simple. In fact a mere 1 8 in.