Floor Vent Floor Joist

When the basement or crawl space has vents installed insulating joist bays.

Floor vent floor joist.

Check to ensure that the new vent location does not cross a floor joist. Measure the width and length of the bottom of the vent with a measuring tape to determine the size of the hole you need to cut in the floor for the new vent location. Remove the existing floor vent from the floor. B the framing member that runs around the perimeter of your house and that the floor joists butt into often gets riddled with large holes this space is the logical exit point for dryer and furnace vents big electrical service wires and fireplace fresh air intakes.

Ventilation in suspended timber floors can be achieved by installing vents. I don t have much of a problem except the hole for the dryer box ducting is at least a 4 hole box looks like the hole is more like 5. The rim joist fig. Joist bays the open spaces between floor joists are prime hosts for insulation under specific circumstances.

This moisture build up can cause deterioration not only the timber joists but also any coverings placed over the joists. Drilling 4 inch holes in the joists would create a structural problem since there is a room and floor above that.