Ridge Vents & Roof Ventilation
Roofers Nation provides expert ridge vent installation, soffit vent installation and gable vent installation in both reroofing and new roof applications.
The importance of roof ventilation is often overlooked. This is understandable when you consider that the most important job for any roof is to keep the building dry. But a well-ventilated roof can make life easier and better for those living beneath it –by lowering heating and cooling costs, improving interior comfort, and granting longer life to roof shingles.
In the summertime, a properly ventilated roof allows hot air in the attic to escape, reducing the demand on your air conditioning system. In the winter, ventilation combines with good attic insulation to keep the roof surface cold, so that snow won't melt on the roof surface and then freeze to form ice dams along the eaves.
There are different types of roof vents, and different strategies for achieving effective roof ventilation. Here's a brief overview:
Ridge vents. Installed along the roof peak, ridge vents are probably the most important vents in any "passive" (non-electric) roof ventilation system. Hot air that accumulates inside the attic rises by convection and escapes outside through ridge vents. As hot air escapes, fresh outside air is drawn into the attic through soffit vents (see below).
On an asphalt shingle roof, ridge vents are usually covered by a layer of shingles. The warmest air in the attic rises naturally to the roof peak and escapes outside through the ridge vents.
Soffit vents.
Soffit vents run parallel to the eaves along the soffit. These vents work with ridge and gable vents to promote good roof ventilation.
Installed along the eaves of the roof, these vents are usually in the form of grilles that run the length of each soffit. By admitting outside air into the attic as warmer air leaves the attic through higher vents, soffit vents play a major role in effective roof ventilation.
Gable-end vents. Installed near the peak of a gable end, this screened vent can allow hot air to leave the attic or fresh air to enter, depending on prevailing breezes and temperature conditions.
Powered attic ventilators (PAVs). Sometimes referred to as attic fans, PAVs come in several forms. Some are designed to be mounted on the roof, while others mount in the attic floor or the gable end. All PAVs contain an electrically powered fan (usually controlled by a thermostat) that exhausts hot air from the attic on hot summer days.
A PAV should not be necessary if a roof has properly sized and installed ridge and soffit vents. While a PAV will definitely exhaust hot air from the attic during hot weather, it consumes electricity, and can actually suck cooled air from the living space through leaks in the attic floor.
For this reason, many home energy experts recommend passive roof ventilation over active ventilation with a PAV.
Add Vents to Improve Roof Ventilation
If your roof is not well ventilated, ask a roofing contractor about improving roof ventilation with ridge, soffit or gable-end vents. All of these roof vents can be installed in an existing roof, or when your roofing is being replaced.
We work in St. Peters, Chesterfield, O Fallon, Granite City, St. Louis, St. Charles, Florissant, Ballwin and nearby in Missouri and Illinois. Just call us today!
Looking for a price? Get a no cost, no obligation free estimate.
