Attic Insulation Baffles Installation

Baffles establish a channel for air to circulate between the insulation and the roof sheathing.

Attic insulation baffles installation.

By installing the baffles properly you can increase the r value all the way out to the exterior sheathing. Cut at least two 24 inch squares of inch plywood to use as seat boards when crawling out into the attic. For ceilings with attics it is only necessary to install ventilation baffles. You will need a baffle for each space between the rafters.

For ceilings without attics vented install both ventilation baffles and chutes. Pull any existing insulation away from the edges of the attic where you will be putting up the baffles. You can situate the baffles where the circulation is mainly required. Ventilation chutes should be installed with a 2 gap between the ends.

Without this air movement any moisture that gets into the attic area becomes stagnant and causes mold and mildew to develop. Step 2 in the bay. As listed in the definition above the baffle is meant to regulate the flow of air. If your roof rafters have been covered over with drywall or plywood you will have to remove it in order to install the baffles.

To completely cover your attic floor with insulation out to the eaves you need to install rafter vents also called insulation baffles. Make sure the fill s depth is uniform across the attic. As with attic floor insulation moisture and heat removal are the reasons for creating proper air. Surprisingly even the most well insulated attic space may still require the assistance of attic baffles to provide the additional air circulation.

Ado products durovent 23 1 2 in. Reduce gap to when using blown in insulation. Even with a 3 12 2 4 truss you are looking at a minimum r15 at the farthest edge. Fasten blocking around the hatch or door to allow the material to be installed around this area without escaping.

To make it easy to eyeball how level the material is as you blow it in screw depth guides to joists throughout the space. Attic ventilation system with built in baffle 10 per carton 4 4 out of 5 stars 3 accuvent 14 5 x 50 16 o c flame retardant pvc high energy vent 50 pack acbp18429. They come in several widths so purchase the baffle that fits between your rafters. The main function of an attic baffle is to draw the air in from outside your home and allowing it to circulate around your attic.