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Re: Vaulted ceiling ventilation

From: info@builderswebsource.com
Category: Other/Misc
Remote Name: 63.198.181.43
Date: 26 Jun 2001
Time: 08:24 PM

Comments

If your ceiling joists are deep enough, you can install special "cathedral ceiling" insulation batts which leave an air gap between the insulation and the roof sheathing. This type of insulation achieves a greater "r-value" per inch, allowing you to meet building codes without filling up the ceiling cavity.

Then, you should install soffit intake vents which allow cool air to flow into the ceiling, and exhausting out warm air through a ridge vent (or in your case, a continuous vent strip where the roof meets the house). It's important that the air intake clear area is at least 50% or more of the exhaust vent clear area.

Sometimes special ventilation baffles are used near the soffit to prevent the insulation from creeping up and blocking the air flow. You should allow at least one or more inches for free air space between the insulation and the roof.

Depending on the type of roofing material you have, you may need to have a metal shop fabricate a custom continuous vent for you.

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