Roof Venting Vaulted Ceiling

Suggestions for un vented or hard to vent building roof cavities.

Roof venting vaulted ceiling.

Click to enlarge any image. How to avoid condensation leaks attic mold insulation mold structural damage to roof framing when roof venting is not possible cathedral roof and knee wall insulation venting air path options in older homes hot roof designs. Research has shown that the amount of airflow in the vent channels of low slope roofs is very limited for roofs with less than a 3 12 pitch. Although there is no separate attic to vent air circulation is still necessary.

A vaulted roof offers open living space directly below the rafters because there are no horizontal ceiling joists. Sketch above showing venting in a steep slope cathedral ceiling roof is courtesy of carson dunlop associates. The question and answer article below paraphrases quotes from updates and comments an original article from solar age magazine and written by steven bliss. 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.

Vented cathedral ceiling assemblies incorporate soffit or eave vents adequate open air space between insulation and roof deck sheathing and ridge vents. You ll want a tight ceiling air barrier with no air leakage into the cathedral ceiling a critical detail for all cathedral ceiling designs.