Attic not only needs to be insulated, it also needs to be ventilated. Attic ventilation is important to keep the attic dry and clean. Attic ventilation is necessary for attic to ensure moisture is not collected in the attic which can cause wood rot and ceiling leaks. This is the reason you won’t find insulation packed right up to the roof or being applied between rafters. If your attic has insulation actually attached to the roof surface, you may want to remove it and replace it with insulation on the attic floor.
For attic that doesn’t appear to have enough vents (the attic is hot and there is no air movements inside), you may want to consult a contractor. They will be able to tell you where to add vents, and the type of vents to add, to solve your problems in the most effective ways. One popular method is the stainless-steel mushroom-shaped “whirlybird” vents that you often see rotating on their “stems” on the back sides of roofs. These turbine require no power, but do an excellent job of pulling air out of attic spaces when there’s even the smallest breeze blowing.
The following are a couple of popular vents for attic ventilation which you could consider installing.
If you are comfortable working on your roof, and the roof is a standard asphalt shingle style without a high pitch, you can install a roof vent yourself. Otherwise, get a contractor to help. It should not be an expensive job and it can make a big difference to the health of your house.
You can first determine how many vents you need, depending on how large your attic is and how much air the vent can move. You could get this information from the place where you purchase the vent. The staffs there should be able to tell you. The vents should be placed fairly close to the ridgeline of the roof, between roof rafters so that you are not cutting through the rafters to install the vent. It should be spaced away from vents in the gables or the eaves so that the attic will be ventilated evenly.
You could refer to the instruction or a template that often comes with the installation kit to determine the hole you need to cut. It doesn’t matter if you are installing a flat vent or a whirlybird vent, the installation kit should have the information you need. Read through the entire instruction list before you do anything else, and ensure that you have all the pieces that should be in the kit, including the vent itself, the template and the flashing that will create a waterproof seal between the vent and the shingles surrounding it. The vent and the flashing are often an all-in-one style.
Some tips which you can apply when installing the roof vents are you should avoid climbing on the roof during hot days. Not only will you feel uncomfortably hot, but you can also damage the asphalt shingles. Their surface becomes soft when they heat up and stepping on them can loosen the surface granules.
If you have wooden soffits without vents, you can add soffit vents. You could add about two to three along the longest sides of the house. Locate the vent position in the attic, between two rafters, and drill a hole or hammer a nail through the soffit to mark it. Head outside, and use the hold or nail to help position the vent. Cut a hole through the wooden soffit to match the vent opening that’s required, and then screw the vent into place over the opening. The vent should have a screen incorporated into it to prevent animals or birds from entering the attic.
Attic Baffle Vents
Baffle vents prevent insulation from covering or falling into soffit vents, ensuring airflow is maintained in the attic. Sometimes it can be difficult to keep attic insulation away from soffit vents, especially if you have the type of soffit that is self-venting with slit-like holes running all along it. To solve this problem, use plastic baffles that fit between the rafters against the roof surface, and guide the air from the soffits up toward the roof.
In conclusion, attic ventilation is as important as attic insulation. The attic ventilation methods that had been discussed above are the most popular types of methods in used today. Your house attic is a very important part of your house. The return on investment (ROI) for work done in the attic will pay off in the long run.
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