Insulating Attic Ridge Vent

Ridge vents look like a small domed shaped caps perched on top of the building.

Insulating attic ridge vent.

Soffit vents sit underneath the eaves of the roof of a house to allow air circulation into the attic. To effectively ventilate your roof create a 1 in. Insulating a finished attic there are two basic ways to insulate a finished attic. To install the rafter vents staple them directly to the roof decking.

Insulation at least r 38 or more is there for heating and cooling. In this case the area behind the knee wall will be uncomfortably hot or cold. Rafter vents ensure the soffit vents are clear and there is a channel for outside air to move into the attic at the soffits and out through the gable or ridge vent. It can do both.

Rafter vents come in 4 foot lengths and 14 1 2 and 22 1 2 inch widths for different rafter spacings. Ridge vent must me installed per the manufactures instructions. The air is then exhausted through gable. Fans and vents may be installed on the roof system that will draw the air out of the.

One last thought attic ventilation is not there to get rid of heat it is there to get rid of excess moisture accumulating from the home. Static vents often protrude from roofline thanks to. Installation of this type of attic ventilation involves leaving a gap in the sheathing along the ridge and covering it with a perforated vent. For the same reason insulation shouldn t touch the roof s underside.

In addition insulation baffles must be installed at the point where the attic floor meets the roofline to prevent the attic insulation from migrating into the cavities and restricting the airflow from the soffit vents. Whole house fans powered attic fans. In cold climates snow can enter the soffit and ridge vents melt and potentially cause rot. Best ventilation is open soffit venting to a open vented ridge vent.

Ridge vents are added to the peak of the roof as output vents. To install the air chutes staple them directly to the roof decking. Staple plastic or foam baffles to the roof sheathing near the eaves to keep the material away. Beyond the decreased capacity for insulation when venting the roof deck venting the roof deck or the attic has some other drawbacks worth considering.

How to insulate an attic ceiling with no soffit vent. How to blow insulation onto an attic floor and. Airspace from the soffit to the ridge by installing a continuous air chute in each rafter bay.