Residential Roof Ventilation 

Ventilation is a vital consideration when it comes to planning a building of any kind and purpose, and your roof is just as important a part of your home or business’ ventilation system. As a top roofing contractor in Huntsville, AL we urge homeowners to check up on the air flow and ventilation of their homes. A roof isn’t just a slab of some material or other that you slap on top of a house to keep it dry, after all. We at 2nd2None Roofing will design your roof’s ventilation with utmost care. Just as our name says, we are second to none in the roofing business here in Huntsville, Alabama.

 

Ventilation is simply air flow and its system of intake and exhaust. There are two ways to do this. One is mechanical, that is to say, use a machine or some such, which requires an external power source. This is a bit inconvenient, for obvious reasons, so most of the time roofers will try to ventilate a roof through two natural physical effects: stack and wind. Stack effect is when hot air rises then creates pressure at an attic’s high points. Hot air escapes (exhaust) and cool air is let in (intake). Wind effect is when the air blows against the outside of a roof to increase the volume of exhaust and intake. A well-ventilated roof takes advantage of both of these effects. 2nd2None’s team of expert roofers are here to ensure that your roof provides good ventilation for your home or business.

Illustration of attic ventilation

Benefits of Proper Roof Ventilation

Roofing ventilation has a number of different benefits. One is keeping the indoor temperatures of your home consistent throughout. A poorly ventilated roof will make some rooms significantly warmer or colder than other rooms in the property. A roof with good ventilation will keep your home comfortable all-year round.

 

Another benefit of roofing ventilation is that it reduces your energy costs. Summer in Huntsville can make homes quite uncomfortable, and if your house doesn’t have a well-ventilated roof, you may find your electric bill skyrocketing because you kept using the air conditioner. With a well-ventilated roof, you will rarely ever need to turn on the air conditioner, since your roof is going to keep hot air out of your home anyway.

 

Roofing ventilation will lengthen the lifespan of your roof in a number of ways. During summer, the hot air that builds up in your attic might damage your roof from the inside out, namely the shingles.

 

During winter, the edges of your roof can form icicles. This buildup of ice is called “ice-dams,” and it can be quite damaging to your roof. This happens when various sources of heat, namely sunlight and the heat trapped in a poorly-ventilated attic, melt the snow on your roof. The water will run to the edges of the roof and refreeze and form the aforementioned icicles. This buildup can run through to the building materials of your home, and can damage your roof and even some walls in your home. Proper roof ventilation averts this problem by keeping the air cool evenly throughout, making sure the heat escapes well before it has a chance to melt the snow on your roof. In 2nd2None, we carefully consider your ventilation needs and will build you a roof that can withstand various temperature extremes.

 

Now that we know some of the benefits of roofing ventilation, what types of vents do we use to build a ventilation system?

 

Ridge Vents

Ridge Vents are probably the most common type of vents used today, and they are important components in homes that do not use an electric ventilation system. They are installed along the roof’s peaks, where accumulated hot air in the attic rises and escapes through these vents.  Ridge vents are usually made of molded copolymer and are installed underneath shingles to make the roof look seamless. They look almost invisible to anyone who isn’t a roofer. Cool air then enters the roof through soffit vents, which are parallel to the eaves of the soffit. These vents are usually grilles that run along the soffit.

Gable-end vents

Gable-end vents are installed, as the name suggests, along the gable-end’s peak. When gable-end vents are used without extra intake vents situated at a roof assembly’s low points, gable-end vents operate as intake and exhaust vents, considering on the wind direction. To boot, their effectiveness depends on wind speed and direction; they’re more effective once wind is of a decent speed and coming from a direction perpendicular to the roof assembly’s gable ends. Gable-end vents are of restricted effectiveness once winds are light and/or returning from a direction parallel to the roof assembly’s gable ends.

Turbine Vents

Turbine vents rely on wind to rotate the vent’s rotary engine fan blades, that draw air from the ventilated area. This vent design attracts air from the ventilated area at a larger rate than a static vent once wind is present. The quantity of air movement developed is a function of wind speed, as well as turbine size and efficiency.

Powered Vents

This type of vents are primarily roof-mounted exhaust fans that are used to exhaust air from a ventilated area. powered vents will improve air movement and may be mounted close to the ridge. Powered vents are best used with intake vents situated at eaves or soffits.

 

These powered vents could also be controlled by thermostat and/or humidistat switches that cause the vents to run solely above a planned temperature or relative humidity. Powered vents also should have a manual override.

 

Powered ventilation shouldn’t be utilized in combination with ridge vents or static vents placed close to a roof’s ridge. In several instances, the air volume being exhausted by the powered ventilation can lead to air intake and, therefore, potential moisture infiltration through ridge vents or static vents.


Whatever the roof ventilation problems you might face, 2nd2None Roofing  is there to help you solve it in a jiffy. Our team of experts have over 15 years of experience in the roofing industry, so you can be sure that they can deliver the quality service that is expected of the top roofing company in Huntsville, Alabama. We take pride in our work, and we care about the needs of our clients. We do our best to keep an open line of communication with our clients, and we even offer to negotiate with insurers on their behalf. You can contact us by calling (256) 479-7575 or filling out the form on our website.

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