Roof Sheathing Baffles

When set into place and sealed with spray foam the vent baffles are insulated and air sealed.

Roof sheathing baffles.

Accuvent offers a quick and inexpensive solution for architects builders and renovators to ensure proper insulation performance for better energy efficiency and indoor air quality. In order to make this kind of roof assembly work insulation baffles or insulation chutes are necessary especially if the attic is going to have any kind of significant amount of insulation in particular blown in insulation that could potentially move around and block off the soffit ventilation from the attic thereby short circuiting air flow from the soffits through the roof s ridge vent. Site built baffles have several possible advantages over manufactured baffles. Baffles establish a channel for air to circulate between the insulation and the roof sheathing.

When the wind is blowing these ventilation channels allow air to move from the soffit vents to the ridge vents. The dual function design creates ventilation channels under the roof sheathing for healthy air circulation while integral baffles prevent wind washing. So why install a baffle. Brentwood s accuvent baffles for roof ventilation are designed to save energy for cleaner greener living spaces.

They can create deeper ventilation channels for example and can be sturdier. The rigid foam is cut to be 2 inches wider than the space between rafters then 1 inch of foam is scored and folded over on either side of the foam creating standoffs that hold the foam away from the roof sheathing providing a space for air to flow. Roofs often require ventilation channels directly under the roof sheathing either for a short section of the roof for example near the eaves or for the entire roof from soffit to ridge.