This moisture build up can cause deterioration not only the timber joists but also any coverings placed over the joists.
Floor vent floor joist.
The rim joist fig.
Joist bays the open spaces between floor joists are prime hosts for insulation under specific circumstances.
Ventilation in floors especially suspended timber floors is very important so as not to facilitate the build up of moisture within the floor structure.
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.
Check to ensure that the new vent location does not cross a floor joist.
I will be venting down the wall to my floor joists and then running the vent about 8 along the floor joist cavity with the 4 duct terminating through the rim board and out the house.
Ventilation in suspended timber floors can be achieved by installing vents.
When the basement or crawl space has vents installed insulating joist bays.
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.