Roof Venting Vaulted Ceiling

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.

Roof venting vaulted ceiling. 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. Vented cathedral ceiling assemblies incorporate soffit or eave vents adequate open air space between insulation and roof deck sheathing and ridge vents. 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.

Click to enlarge any image. A vaulted roof offers open living space directly below the rafters because there are no horizontal ceiling joists. You ll want a tight ceiling air barrier with no air leakage into the cathedral ceiling a critical detail for all cathedral ceiling designs. Suggestions for un vented or hard to vent building roof cavities.

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. Worries about the hot roof un vented cathedral ceiling designs how to.