The following video demonstrates how the appearance of vent screens can be very misleading. Fortunately, adding proper ventilation is an affordable attic upgrade. A vent screen without a vent hole into the attic isn’t providing the needed airflow. Many homeowners that see vent screens at the soffit mistakenly assume they have attic vents. It can be difficult to tell if you have proper intake venting in your attic. Which can lead to mold and mildew issues. ARE BAFFLES EXPENSIVE?īaffles are inexpensive to install and the cost is easy to offset when you consider the costs and discomfort associated with cooling living spaces impacted by heat build up in your attic during summer months, and moisture related issues during winter months. It is important that baffles are installed level and are properly secured. HOW ARE BAFFLES INSTALLEDīaffles are installed anywhere you have an intake or soffit vent in your attic. Baffles are typically made of foam and can come in different colors. When installed properly, baffles channel airflow up and over any insulation, into the attic. attic baffles, insulation baffles, or vent baffles are designed to prevent insulation or other debris from blocking airflow into the attic. If you have insulation in your attic, it is important that you prevent the insulation from blocking intake vents. Want to understand the science behind roof and attic ventilation? Check out this excellent crash course by Joseph Lstiburek. Click here to learn more about attic air circulation and ventilation> VENTILATION SCIENCE Intake and Exhaust vents help your attic to breathe. Intake vents allow external air to flow into your attic and expel stale attic air through exhaust vents placed higher on the roof. Typically, intake vents are installed at the eave or soffit. For strips larger than 24 inches, a staple every 4 inches on each side is recommended.If you have insulation in your attic, you should also have intake vents. For thinner strips, these staples can be placed in the middle of the foam. Staple through the foam every 4 inches to the top. Want more information on proVent Baffle For Homeowners: 86 For Contractors: 800. Poor air flow reduces insulation efficiencies and accelerates problems due to moisture. Without ventilation channels, air cannot flow freely from the soffit to the exhaust vents. Staple several times on top of the wall plate to secure. One ProVent ventilation channel per rafter or truss cavity is recommended. Push the foam strips into place between the rafters. A utility knife is the best tool for this. Step 3Ĭut one-half-inch, foil-faced, rigid foam into strips the width of the space between your rafters. Start your measurement at the top of the vented area at the wall plate and measure to the crest. Measure the distance between your rafters and between the rise. Place plywood over two or more joists under your work area to prevent damage to the ceiling below. ![]() ![]() One-half-inch, foil-faced, rigid foam insulation works well for this purpose. If your rafters are closer or farther apart than this distance, it may be necessary to make your own rafter baffles. Commercially made baffles can be purchased in 16-inch or 24-inch widths. Baffles should fit snugly between your rafters, and extend from just over the vent at the wall plate up the rafter. Rafter baffles are sheets of plastic, foam or cardboard that fit between the rafters in your attic to prevent moisture accumulation and add insulation to your home. Rafter baffles should be installed before dry wall or insulation. ![]() 1/2-inch foil-faced rigid foam insulation
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