are Vents and when do you need them?
Vents allow airflow in and out from
under your cover. As night turns into day, condensation
can occur on the underside of your cover - just as a
glass of cold water gets condensation on the outside
of the glass. Vents allow airflow underneath the cover
to dry up the condensation and minimize mildew.
The vent hood is made of boat cover
material with screening underneath to keep critters
out. Vents are placed so they face downward, so rain
does not flow in, and slightly toward the aft end so
air does not rush in and lift the cover while traveling.
style covers already have a vent in the front and back
of the cover, so generally you do not need to add vents.
covers are breathable (the entire cover is breathing)
therefore, usually, you do not need vents.
However, polyester army
duck material is not breathable, and our "Trailing-Mooring"
design does not have vents built into the cover. If
you are in the South where you get a lot of heat build
up, you may want to add two vents to your poly Trailing-Mooring.
If your boat is made of wood, vents
are recommended because wood needs to breathe. See