Proper Ventilation is the Key to Prolonging the Life of Your Roof
Proper attic or roof ventilation is an important part of the roofing system. Adequate roof venting pulls fresh air into the attic and pushes out heat and moisture. This in turn reduces the temperature difference between the air outside and in the attic. When this is done correctly proper roof ventilation will reduce the risk of potential problems and extend the life of the roofing system. However, poor roof ventilation can cause a variety of problems that can lead to expensive repairs. These can include mold and mildew, rust, saggy or spongy decking, deterioration, frost, ice dams and air conditioner replacement and expenses.
With balanced motor and blade design, power vents quickly exhaust heat or humidity from any attic. They work on a thermostat, which automatically turns the fan on when cooling is needed. One power attic ventilator is usually sufficient, unless it's a very large attic. Gable-mounted power vents are an excellent option for tile roof ventilation.
A ridge vent runs the entire length of the roof peak, blending into the roof line for a more attractive home. They work year round and provide evenly distributed ventilation along the entire underside of the roof. Despite their slim design and visual appeal they provide a higher volume of airflow per square foot of attic area than any other fixed vent system.
Turbines are passive ventilation systems which means that they are powered by the wind itself and they do not use electricity. They are also less noisy than most fan varieties. They do remove a lot of hot air from the attic. Even a small foot-long turbine can remove over 300 cubic feet of hot air in each minute. When there is no wind speed to drive the turbine, they still allow hot air to rise through the open flaps of the turbine.
Louvers are an inexpensive and popular way to ventilate your attic. They are not as effective as power or ridge venting but they can be effective if placed properly. They will require more installs on your roof to work effectively. This may change things aesthetically for the homeowner and should be discussed in detail. They are placed evenly across your roof and they come in a variety of styles to match your home.
Box vents are the lowest cost solution for roof ventilation. These are also a louvered vent which means it is a static gravity vent with a cover. They are the most common ventilation system installed on builder grade roofs. Several box vents are needed to achieve the ventilation of one wind turbine. Korrect will always recommend upgrading from box vents and in an insurance claim we will upgrade your ventilation at no additional cost to the homeowner. There are instances where they are sufficient but not as the primary ventilation for your roof.
Your PVC roof jacks are critical to the roofing system as they allow moisture and unwanted exhaust to escape the home without damaging the structure. Most builder grade roofs are installed with rubber boots around these vents. These are especially insufficient in Texas due to the heat which causes them to crack and erode, as seen in picture one. This will lead to leaks that can cause structural damage in your roofing system. Replacing these with lead jacks is an effective and inexpensive way to avoid these issues. We will always recommend this to a homeowner and will do it automatically in an insurance claim.