Insulating Attic With No Soffit Vents

In cases where there is no under roof venting system no soffit intake vents no ridge vents a hot roof design is followed.

Insulating attic with no soffit vents.

With spray foam unlike with loose fill or batts you must cover the soffit vents they aren t needed to keep the roof cool. Is there any insulation now. Install low gable vents located above the top level of the attic ceiling insulation use eye brow vents that are on the top of the sloping roof surface near the soffit eave area. The two most common options are to.

Venting solutions for roofs with no overhang or soffit. The soffit vents are now installed but you still need to make sure there s no insulation blocking the new vents. Then cover the foam with drywall as required for fire safety. Place the plywood sheets or boards across the rafters in the attic.

Aside from the technical aspects of insulating and venting an attic without a soffit this is a project that requires both experience and expertise. The roof cavity between rafters can be filled with insulation followed by installation of a perfect vapor barrier followed by finish surface of drywall or whatever else. This gives you access to all parts of the attic. I reshingle this past year and pulled out old r14 insulation and retaped as many as visually possible areas of vapour barrier leaks cuts in material etc.

Details are at hot roof design problems. That way you won t need soffit venting to begin with along with its associated complications soffit baffles ridge venting and it will also be more efficient if you have mechanical appliances or ductwork in the attic. Install special roof intake venting products that work at the lower edge of the roof decking underneath the first course of shingles. Homeowners can too easily inadvertently block them when insulating the attic.

While effective at pulling in cooler air the biggest problem posed by this type of soffit vents is their positioning. If not you might as well go whole hog and make the attic itself a part of the conditioned space. If the attic is insulated with fiberglass batts just pull back any that are blocking the flow of air. Figure out how much insulation you need for the area of the country in which you live by accessing the the u s.

Foam blocks airflow needs no vapor barrier and has a higher r value per inch than loose fill or batts so you ll get more protection with less depth. Smart vent a special roof eaves vent product that provides a 3 4 opening about 6 above the top of the roof drip edge. In terms of product batt insulation will be different than blown insulation which will be different than spray polyurethane foam insulation. How to insulate an attic ceiling with no soffit vent 1.