Roof Sheathing Baffles

When the wind is blowing these ventilation channels allow air to move from the soffit vents to the ridge vents.

Roof sheathing baffles.

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. Baffles establish a channel for air to circulate between the insulation and the roof sheathing. Brentwood s accuvent baffles for roof ventilation are designed to save energy for cleaner greener living spaces. The dual function design creates ventilation channels under the roof sheathing for healthy air circulation while integral baffles prevent wind washing.

When set into place and sealed with spray foam the vent baffles are insulated and air sealed. 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. As with attic floor insulation moisture and heat removal are the reasons for creating proper air. So why install a baffle.

It is a simple yet functional design with the added bonus of keeping unwanted pests from entering your home. Site built baffles have several possible advantages over manufactured baffles. Soffit vents and baffles work in tandem together and you will usually find attic baffles between the rafters or the roof sheathing in order to create protection for the soffit vents.