Roof Sheathing Baffles

It is a simple yet functional design with the added bonus of keeping unwanted pests from entering your home.

Roof sheathing baffles.

Site built baffles have several possible advantages over manufactured baffles. Brentwood s accuvent baffles for roof ventilation are designed to save energy for cleaner greener living spaces. Baffles establish a channel for air to circulate between the insulation and the roof sheathing. 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.

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. When the wind is blowing these ventilation channels allow air to move from the soffit vents to the ridge vents. 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. They can create deeper ventilation channels for example and can be sturdier.

When set into place and sealed with spray foam the vent baffles are insulated and air sealed. 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. So why install a baffle.