Installing attic baffles

Overlap each baffle. Repeat the process on each rafter bay. Seal the baffles. If your baffles extend all the way down to the soffit vents, prevent air from escaping through the joints between the vents and the baffles by spraying spray foam where the baffles meet the events.

Caulk the outside of each baffle where it meets the roof deck. Caulk the seams between each overlapping baffle. Matt Brown has been writing professionally for more than 15 years. He shares his experience in home remodeling and do-it-yourself projects with his readers. Place rafter vents in between the rafters where the ceiling meets the floor. Photo courtesy of Doug Anderson. Add insulation around the rafter vent and out to the edge of the attic floor.

Skip to main content. Additionally, if you have intake or attic soffit vents, baffles are required. Attic vent baffles also prevent clogging in your soffits. Vents can become clogged by insulation. Perhaps your home is well insulated. But if the insulation stops air from flowing, you could have a serious problem.

Rafter air channels ensure a clear path where outside air can move under the roof, keeping the area aired out. Check if your home has the proper insulation and ventilation.

Your soffit vents work hard to keep your air circulated. This keeps your home cool and safe from condensation and mold. Everywhere that there is an air intake piece soffit , cool air is being brought into your home. This is so that cooler air outside can replace the hotter air in attics.

Attic venting baffles channel the air from outside, continuing the circulation. This is what keeps your home cooler. So, while rafter air channels are not required between every rafter, they are necessary for each air intake piece.

The general rule of thumb is one soffit intake and rafter air channel for every square feet under the roof. If your home is in need of circulation, we have a step-by-step guide on how to install attic baffles under your roof. The simple answer is that for every vent you have, the space between rafters to cover every vent should be covered.

Multiply that by how many baffles it takes to cover the space between rafters from the bottom to the top of the roof. However, there is also a question of personal preference. Perhaps you may want to install additional vents in the future.

Maybe you want to maximize how airy it is. In either case, the more attic ventilation baffles creating airflow, the better.