Install Attic Insulation Vents

Proper ventilation allows outdoor air to flow through the soffit vents and the newly installed rafter vents and then out through the roof vents.

Install attic insulation vents.

The constant airflow helps exhaust moisture and condensation and prevents the growth of mold and mildew. Attic vents are typically installed in the soffit along the underside of the eave along the ridge of the roof or on the gable end of the house. When insulating an attic be careful not to lay any insulation over the vents. Proper attic ventilation is essential to both efficiency and shingle longevity.

But before you cut any holes plan the locations of the attic vents. Install the second layer top layer perpendicular to attic framing members. If using insulation with a vapor retardant facing install the material with the vapor retardant side down. Rafter vents should be placed in your attic ceiling in between the rafters at the point where your attic ceiling meets your attic floor.

Sometimes called rafter vents baffles provide ventilation and keep the insulation from blocking airflow through your attic. Photos 1 6 show how it s done. Putting baffles in your attic is a crucial step in installing attic insulation. Begin at a wall and work toward the center of the attic floor or the entryway carefully placing insulation between joists and ensuring a snug fit.

Attic ventilation is necessary to prevent moisture build up that can potentially cause rotting. There primary purpose is to keep insulation from clogging the lower ventilation. Baffles sometimes called vent chutes or rafter vents are used to keep air flowing through the attic. Adding attic vents is a simple matter of cutting holes and installing vents.

Mark the roof venting locations from the attic where you can see the rafters and avoid placing roofing vents over them. To install the rafter vents staple them directly to the roof decking. It is a fairly easy process that will make a world of difference in assisting your insulation and keeping your home protected from rot which can save you a substantial amount of money down the road. To view the next video in this series click here.

Installing attic rafter vents before blowing in 22 inches of insulation is extremely important. When installing multiple layers of insulation for optimal thermal performance install the first layer bottom layer parallel to attic framing members and flush with both bottom and top.