Propper Attic Ventilation With A Ridge Vent

Rafter vents come in 4 foot lengths and 14 1 2 and 22 1 2 inch widths for different rafter spacings.

Propper attic ventilation with a ridge vent.

Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation evenly split between intake and exhaust for every 300 square feet of attic floor space. Combining an attic power vent fan with a ridge vent is usually not recommended because. Gable vents may circulate air through only a small percentage of your attic. Effective attic ventilation systems reduce damaging heat and moisture in your attic promote energy efficiency by helping to reduce the load on your air conditioner in the summer and also reduce the risk of ice dam formation on your roof.

For the best results place roof ventilation near the roof s peak and soffit vents in the eaves. A ridge vent is a ventilation strip that is placed along the ridgeline of the home. Proper attic ventilation consists of a balance between air intake at your eaves soffits or fascias and air exhaust at or near your roof ridge. Without baffles blinders that prevent outside air from crossing over the vent a ridge vent may create almost no ventilation at all.

See the benefits of attic ventilation a new roof is more than just shingles. It could reverse the natural flow of hot air out the ridge vent. The majority of roofing experts agree that ridge vents are the most effective and cost effective roof vents available. Soffit vents when paired with ridge vents provide complete ventilation for your whole roof surface.

Rafter vents ensure the soffit vents are clear and there is a channel for outside air to move into the attic at the soffits and out through the gable or ridge vent. Static vents often protrude from roofline thanks to. The installation of a turbine vent is nearly identical to a static vent. To install the rafter vents staple them directly to the roof decking.

If you see dampness or frost you need better roof ventilation and some attic vents. While this provides an outlet for air flow it does not provide an inlet to complete the convection cycle needed for proper ventilation. Installation of this type of attic ventilation involves leaving a gap in the sheathing along the ridge and covering it with a perforated vent. Prior to installing the ridge vent a 1 inch wide strip of roof decking is cut out along both sides of the ridgeline to allow for air movement through the vent.

We see many older homes with no attic ventilation and some that have recently had ridge vents installed. Grab a flashlight and inspect your attic during the winter.