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.

Cold air coming from walls.

When you combine that with the. As that warmed air leaves the interior wall cold attic air moves into the cavity to take its place. In fact a mere 1 8 in. The warm air then rises into the attic a process called the stack effect.

Where could it be coming from. Hole in your ceiling. Most people notice this in the winter when cold air blows through a wall outlet on an exterior wall. Gap around just six ceiling boxes is the equivalent of cutting a 4 in.

The small air gaps around electrical boxes on exterior walls and ceilings leak more air than you might imagine. Or in the summer when the hot 100 f air finds its way into your cool inside living space. Cover your windows with thermal draperies. 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.

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. 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. Department of energy s doe oak ridge national laboratory.

Think of the amount of heat you d lose. Cold air coming through cracks and crevices in a window will lower the temperature of a room and make your walls cold.