Vaulted Ceiling Roof Ventilation

This article describes the best methods for ventilation in a cathedral ceiling and the effects on heat loss of air movement through a ventilated attic or cathedral ceiling.

Vaulted ceiling roof ventilation.

The roofer who did the job for the sellers says it does not. My inspector said it needs ventilation ridge vent soffit vents. If the attic space is going to be conditioned either for living or mechanical purposes or if a home design calls for a vaulted ceiling provision r806 3 in the international residential code calls for the roof deck above the space to be vented continuously from the eave to the ridge. I m buying a house in colorado and the house has a vaulted cathedral ceiling such that both the plywood sheathing and the ceiling sheetrock are attached to opposite sides of the rafters i e.

Set up the whole house fan in an area of the home that connects to the room with the vaulted ceiling if there is not enough. Cathedral ceiling ventilation roof bottom vents. Ventilating cathedral ceilings for a durable roof considerations related to condensation and dew points are critical in controlling the intrusion of moisture in any building and cathedral ceilings are no exception. We also provide a master index to this topic or you can try the page top or bottom search box as a quick way to find information you need.

Ventilation of vaulted ceilings vaulted ceilings sometimes referred to as cathedral ceilings occur in steep slope roof assemblies in which there is no attic space between a ceiling and roof deck. Virtually any house with a sloped roof will support a vaulted ceiling just as long as attic space exists in which to construct the vault. A vaulted roof offers open living space directly below the rafters because there are no horizontal ceiling joists. Steeper roof pitches are necessary for higher vaults.

When renovating an older home whose roof rafters are only 2x6 really 5 1 2 x 1 5 in dimension the available space for insulation and ventilation is limited therefore limiting the options for a combination of good under roof ventilation and high insulation r values in the cathedral ceiling. With a variety of roof soffit designs it is hard to suggest any particular type of vent but continues one would probably cover all possibilities and. Although there is no separate attic to vent air circulation is still necessary. A whole house fan mounts into a ceiling that has attic space and vents.

These assemblies pose unique ventilation problems. Vent the roof deck.