Vaulted Ceiling Roof Ventilation

Steeper roof pitches are necessary for higher vaults.

Vaulted ceiling roof ventilation.

Ventilating cathedral ceilings step 1. These assemblies pose unique ventilation problems. The flow of water vapor. Cathedral ceiling ventilation roof bottom vents because each rafter space is like a small individual attic it.

Cathedral ceiling ventilation insulation 1. A vaulted roof features angled rafters that rest on wall plates and connect at the top to a ridge. 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. Without an attic baffle there will not be any air space for fresh air to enter the attic from the soffit vents.

Sealing bypasses the first line of defense. 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. Cathedral ceiling ventilation insulation if properly installed between the rafters on top of the ceiling material. How to vent a vaulted roof vaulted roof elements.

Chimneys recessed lights plumbing chases and holes drilled through top plates for plumbing or wiring should all be sealed figure 2 53 at left. Upstairs bedrooms bonus rooms game rooms living rooms dining rooms kitchens or any room with vaulted ceilings can now be vented properly. Penetrations roof ventilation challenges common air leak points in ceilings pay special attention to penetrations in the ceiling plane particularly in cathedral ceilings. The bottom of each rafter cavity ends at the soffit which is the horizontal plane that lies just beneath.

Properly insulated cathedral ceiling assemblies incorporating air and vapor retarders can function without ventilation.