Gilmat. Interior. November 03rd , 2017.
To ventilate steel-slope roof assemblies, air intake and exhaust vents are used. They are to provide a means to allow outside air going in and out the attics and ventilation spaces. There are some types of roof vents commonly found in any houses. Today, we will briefly explain each one of roof vents types to you below, in addition to variations in roof vents installation for each type. Here they are!
The intake roof vents are used to allow outside air entering the attics and ventilation spaces. The intake vents are supposed to be installed along the lowest eaves of a roof assembly near or at eaves or soffits. This type is best used with exhaust vents located near or at a peak of a roof assembly. This ventilation air intake configuration along low points and exhaust at high ones takes advantage from the natural convection. They must always be installed to provide free movement of air into the ventilation space and isn’t supposed to be blocked on the interior side.
The exhaust roof vents are used to let air in ventilation and attic spaces to exit to the exterior. They should be placed near or at a ridge or high point of a roof assembly and best used with intake vents located along the lowest eaves of a roof assembly, near or at eaves or soffits. This configuration balances air exhaust at high points and air intake along low points. There are some common types of exhaust vents we will also briefly explain below.
Ridge vents are one among common types of exhaust roof vents that are installed along the length of ridge. They are either non-shingle-over or shingle-over types. The shingle-over ridge vents are covered with shingles to keep precipitation for entering a building. The non-shingle-over ridge vents are more noticeable. There are also static vents that are individual vents installed near a roof’s ridge.
The gable-end vents are exhaust roof vents installed in the walls of a building and at the peak of the gable end. They are best used with intake vents at eaves or soffits for allowing for the air intake at the eaves or soffits and air exhaust at the gable-end vents. Depending on the direction of the wind, gable-end vents can function as exhaust and intake vents when they aren’t used with additional intake vents placed at the low points of a room assembly.
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