Proper Roofing Ventilation

Cut the shingles for roof vents.

Proper roofing ventilation. Center nails between rafters 18 in. You ll first need to consider whether or not your house s roof needs ventilation. Gable vents may circulate air through only a small percentage of your attic. You can also contact your local municipality to check on building code in your area.

Here are the top reasons why you need ventilation in your roof. Mark attic roof air vent locations. Why is ventilation so important. Drive nails up through the sheathing and.

Finally unlike the rest of these models. The option you choose will be contingent on factors such as the type of roof you re working with and the local climate. This is accomplished through the placement of ventilation near the bottom of the attic space at the soffits or eaves intake and at the top peak s or ridge s of your attic space exhaust. 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.

Static vents often protrude from roofline thanks to special covers intended to keep all precipitation rain sleet hail. These ventilation needs are calculated differently. Proper ventilation necessitates that fresh air is able to find its way in the attic space while allowing stale air to get out. 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.

Cut the hole for roof vents. Exhaust vents ridge vents openings that run the entire length of your roof along the ridge are often visible only to a trained eye. Without baffles blinders that prevent outside air from crossing over the vent a ridge vent may create almost no ventilation at all. 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.

The majority of roofing experts agree that ridge vents are the most effective and cost effective roof vents available. Ventilation is critical for your home and that s especially true for your roof. Without proper roof ventilation a whole host of problems can crop up costing you money and damaging your home. The amount of space you devote to intake must be equal to the amount you allow for exhaust and these must be calculated according to the size of your attic and slope of your roof.

How to install roof vents. There are some styles of vaulted ceiling homes or flat roof homes that have ventilation spaces within the roof itself and no attic. If it does you ll have to decide what type of vents will work best and how to properly install them. Most building codes require a ratio of 1 150 ventilation space to attic floor space.