Putting Baffles In Attic

From left to right air flows through the soffit vents up over the baffles allowing for the required roof venting.

Putting baffles in attic.

Whether using loose fill or batts put the vapor barrier closest to the warm side of your installation where hot moist air would get in facing the house s interior in cold climates beneath floor insulation and the attic s interior in hot climates on top of floor insulation. Some regions don t require a vapor barrier. Installing baffles from a soffit vent and up the rafter bay allows you to insulate every available inch of attic floor space. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.

Cut at least two 24 inch squares of inch plywood to use as seat boards when crawling out into the attic. 1 determine the size baffles you need by. Baffles or channel vents direct air from soffit vents at the bottom of the roof to a ridge vent at the peak by preventing blockage caused by insulation. Rafter vents or insulation baffles install in any rafter space.

You can situate the baffles where the circulation is mainly required. Just a few pointers and ideas that may make this crappy job a little easier. Installing baffles in a attic where the insulation has already been installed. Surprisingly even the most well insulated attic space may still require the assistance of attic baffles to provide the additional air circulation.

Measure the distance between your rafters and purchase enough rafter vent baffles to install one over each soffit vent. Sometimes called rafter vents baffles provide ventilation and keep the insulation from blocking airflow through your attic. They come in several widths so purchase the baffle that fits between your rafters. Attach this roof and attic insulation treatment using foam baffles to ventilate insulate and channel cold and hot air to roof vents before insulation is add.

Without baffles you must keep vents clear of insulation which means. The picture below courtesy of the epa indoor airplus program which we provide builder verification services for helps show how the system works. Putting baffles in your attic is a crucial step in installing attic insulation. An attic baffle is simply an item to regulate the flow of air aka required roof venting and impede it the insulation from interfering with each other.