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Play It Safe......

Posted by Dodgeman on December 6th, 2002 12:33 PM
In reply to Cathedral Ceiling Venting by Diane on December 6th, 2002 09:58 AM [Go to top of thread]

Hold off on the ridge vent installation until the roof is clear of snow.
You need to install continuous ridge venting as soon as you can safely get to it. I also hope that the baffling you have installed runs from the soffit to the ridge, and is perforated. It needs to be perforated in order to let the moisture out of the insulation and travel up and out the ridge vent.
To install the ridge venting, you will have to saw through the roof decking along the peak about 2 to 4 inches either side if the peak. The width will depend on the specific ridge vent you choose. Saw only deep enough to cut through the decking, not the structural joists underneath. After you have removed the decking at the peak, you will have a continuous slot (except for the joists) along the entire length of the peak.
Before you install the ridge vent over this slot, take metal window screening cut to the correct width, and cover the entire length of the slot by stapling it down. This is to keep out insects that can eat through the plastic screen that many ridge vents have.
I prefer the "nail over" ridge vents in which you can nail over the same type of shingles that are used on the rest of the roof. That way the vent will match the rest of the roof.
Shop around for the ridge vent. Don't buy the cheapest, as some of them don't allow enough air flow.
Good Luck!

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