For every two percent moisture you lose a third of the r value.
Cover attic vents in the winter.
How to close an attic vent during the winter.
An under eave vent is a continuous perforated vent that is installed under the.
Blocking the vents can even harm your home by trapping moisture inside the attic.
Remove the grate from the attic fan.
You should absolutely leave your roof vents open during the winter do not cover them.
Is more attic ventilation better.
If you have your insulation and you let it get two percent damp it loses one third of its ability to insulate.
You want a precise amount of ventilation to keep your home properly heated and cooled.
Instead it will merely cause a build up of moisture and heat that can cause other more troubling conditions in your home come spring.
Gable vents are installed at the roof peak s highest point in the gable.
Measure the height and width of the.
Roof ventilation is important year round.
They can be painted and a number.
During the winter your home s roof vents allow moisture to leave the attic space preventing the growth of mold and mildew that can occur even during this typically dry period.
Set the grate aside.
In the winter the vents will cause the attic to become cold but this should not damage your home or increase the energy use of your home so covering the roof vents is not necessary.
But there s more to this puzzle as you ll discover in the sections below.
Shutting the vents in your attic during the winter isn t going to help you hang on to too much heat where you actually want it in the living areas of your home.
A hard wire runs directly from the.
So those vents actually help keep that insulation dry in the winter time.
It only seems logical that closing those same vents during the winter would help keep the warm air inside.
Roof vents allow air to circulate through your attic and exit your home.
Turn off the electricity to attic fan by unplugging or by disconnecting the hard wire from the junction box.
Just as you would size a furnace or air conditioner for your home you also size your attic.