Attic Baffle To Cover Soffits Too

The solution is to add baffles which allow air to flow past the insulation photo 9. Rafter vents or insulation baffles install in any rafter space to create narrow gaps that direct fresh air from the soffit vents to the peak of the roof. That means air can t flow from the soffit vents to the roof vents.

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Attic length x attic width 150 total vent space or net free area nfa my attic has an area of 1 288 square feet so my nfa is 8 5 square feet.

Attic baffle to cover soffits too.

Can you have too much ventilation in your attic. Run baffles the entire length of the rafter bay from the soffit vent to the ridge vent then add batting insulation over the baffles. Finally to ensure that the airway to the vent remains open staple a ventilation baffle to the plywood sheathing in each rafter bay. We use this same design under roofs that cover cathedral ceilings but on occasion find that more air space and air flow up under the roof sheathing are needed in those structures.

In this post we cover the intake ventilation. If you opt not to have an attic baffle you could potentially be leaving your home to additional debris and moisture to enter through the soffit vents. If this does happen the soffit vents will not function as best as they should and therefore supporting the formation of mold or fungi rather than preventing it. The answer is rafter venting.

That is split into 4 25 square feet or 618 square inches for both intake and exhaust. Baffles are available at home centers. If your attic is well insulated the insulation might be plugging the spaces between rafters just above exterior walls. The attic roof vent baffles baffles hold the insulation away from the roof deck to permit air to enter the attic or under roof space.

The molded polystyrene baffles available at home centers and lumberyards for about 1 each form channels that hold insulation at bay and direct incoming air upward.