Warm Roof Eaves Ventilation

Warm air that escapes rooms below gets trapped in the attic.

Warm roof eaves ventilation.

Snow melts and the water refreezes on the cold eaves creating ice dams. Eaves and ridge ventilation is not normally required. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. If ridge or eaves ventilation is not possible ventilation tiles can be used at high or low level to achieve the required airflow.

These are some of the reasons why a cold roof can be cheaper as ridged warm roof insulation tends to be more expensive a warm roof is sometimes the only option when it is difficult to get the required cross ventilation. Intake vents located at the lowest part of the roof under the eaves allow cool. Smart vent a special roof eaves vent product that provides a 3 4 opening about 6 above the top of the roof drip edge. Sometimes we get asked why choose a cold roof or warm roof.

The two roof ventilation options intake vents and exhaust vents should be placed to take advantage of the natural increased speed of air circulation. For a simple duo pitch roof bs 5250 specifies sufficient ventilation as being. Intake vents such as soffits are placed lower on the roof usually under the eaves. The smart vent is a tapered plastic vent product that is combined with a one inch slot cut into the roof deck six inches from the lower edge of the roof.

Warm roof ventilation specification. Thick ridges of ice on your eaves in winter are a sign of poor attic ventilation.