No Vents In Attic

Too often mechanical ventilation ducts from bathrooms kitchens or laundry rooms deposit warm moist air into the attic instead of outside the building envelope.

No vents in attic.

Without baffles blinders that prevent outside air from crossing over the vent a ridge vent may create almost no ventilation at all. You can use a shingle over vent at the bottom or mid roof mid roof being higher up than the potential ice damming. When the attic becomes part of the home to be heated and cooled open wall gable vents and roof vents are no longer feasible but the underside of the roof the sheathing and rafters can still get. Don t avoid ventilating your attic for fear you re letting cold air into the house.

The majority of roofing experts agree that ridge vents are the most effective and cost effective roof vents available. The design of many older houses omits eaves which maximizes the amount of sunlight. Covering up the soffit vents with loose fill or batts which can happen if you stuff insulation along the eaves is a huge no no. Your roof vents may not look anything like the ones shown in this article.

On the principle that hot air rises the accumulated heat and moisture would rise to the attic and out the roof vents. Focus on the other ventilation you have in the attic. Your roof may have a ridge vent which is a low profile continuous roof air vent running along the peak of the roof. Without adequate ventilation moisture rises with the hot air and forms condensation on the inside of the roof deck.

Your actual living space is sealed. Ice damming is caused by the warmer attic space melting the snow down to the cooler eaves where it freezes. If you are installing a new roof consider a drip edge vent. Problems when roof has no overhang.

The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow. If there are asphalt shingles on your roof the attic must be ventilated to comply with the terms of the. For proper ventilation it isn t enough for air to simply get into your attic. Properly vented attic space will not do that because its theoretically the same temp as it is outside.

How to vent an attic with no eaves the function of soffit vents. For the same reason insulation shouldn t touch the roof s underside. Look at your eaves and roof. A combination of air sealing and insulating the attic floor while providing ventilation considerably reduces the potential for condensation as warm moist air is less likely to enter the space and condense on cold surfaces.

Obviously more research is needed but here s what we do know. Gable vents may circulate air through only a small percentage of your attic.