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Old 03-04-2011, 10:27 PM   #1
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Insulation under fiberglass deck


Doing 2nd floor fiberglass deck above living area. Do I HAVE to put baffles before putting in the insulation for ventilation?

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Old 03-05-2011, 07:58 AM   #2
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Insulation under fiberglass deck


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Doing 2nd floor fiberglass deck above living area. Do I HAVE to put baffles before putting in the insulation for ventilation?
I don't know what you mean by this.
Where is this going? Inside? Outside? The attic?
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Old 03-05-2011, 11:12 AM   #3
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Insulation under fiberglass deck


Rafter vents would go under plywood deck between floor joists and it would vent through the soffit in the front of the deck, but there is nothing on the other end, just ledger board.
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Old 03-05-2011, 11:57 AM   #4
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Insulation under fiberglass deck


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Originally Posted by Dangis View Post
Rafter vents would go under plywood deck between floor joists and it would vent through the soffit in the front of the deck, but there is nothing on the other end, just ledger board.
Ayuh,... It's gotta be vented from both ends, or it ain't vented at all...
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Old 03-05-2011, 09:17 PM   #5
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Insulation under fiberglass deck


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Doing 2nd floor fiberglass deck above living area. Do I HAVE to put baffles before putting in the insulation for ventilation?
Don't use baffles they'll rot away under the deck
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Old 03-05-2011, 09:20 PM   #6
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Insulation under fiberglass deck


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Don't use baffles they'll rot away under the deck
Build a pitched roof under the deck for water run off then rubber roof it ,then build deck inside your posts free floating and be sure it is able to lift out for easy seasonal cleaning.Drill thumb holes in sections of the deck instead of using handles or claps.

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Old 03-06-2011, 11:28 AM   #7
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Insulation under fiberglass deck


The old deck that we demolished had baffles. Plus the architect is asking for vented soffit in front of the deck.

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