Energy savings certainly starts to become a top of mind concern for building and home owners as we transition from temperate spring conditions into the brutal and ruthless North Texas summer. Proper and adequate attic ventilation can promote energy savings as well as prolong roof life.
Ventilating an attic space requires both intake and exhaust. Intakes are most conventionally installed under the eaves in the soffits. On straight gable roofs intakes can also be installed at the top of the end rise walls.
Deciding on the best ventilation method normally books down to a few determining factors. These factors are:
Length of peaks -aka ridges.
Type of roofing material.
Directional orientation of house/building.
For homes/buildings with long ridges, ridge vent works efficiently. The ridge vent is installed by cutting back the substrate (roof decking) and installing a baffled vent which allows hot air to escape but does not allow moisture, vermin or insect intrusion. Ridge vent work with the physics principle that hot air rises. This creates a good sir flow through the attic space as fresh air is taken in through the soffit vents and then hot air rises and continuously escapes through the ridge vent system.
Homes/buildings with diverging rooflines and short ridges, ridge vents do not work as well. Hip roofs, such as these, are more efficiently ventilated with wind turbines and/or solar fans. Wind turbines are less expensive than their solar counterparts and they move a considerable amount of air – especially if the oversized units are installed. Solar fans are a great option and work well when they are needed most – in the blazing summer sun. Solar units work best when installed on the west and/or south slopes of the roof. Cloudy weather and nighttime hours diminish the effectiveness of solar units which can be a major drawback as heat in North Texas doesn’t dissipate until the early morning hours. Attics need ventilation 24 hours of every day.
Consult the professionals at Accede Construction for a free ventilation consultation and “EN-alysis” for your home/building.