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Admin (Admin)
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Username: Admin

Post Number: 1
Registered: 07-2006
Posted on Saturday, January 09, 2010 - 03:33 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Put a styrofoam baffle under the roof deck before spraying the foam. This will prevent one side of the deck boards from being smothered and potentially cupping the boards. Wood shrinks and swells with the seasons, which is why both sides should have access to air.

Joseph Jenkins, Inc.
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Kc314 (Kc314)
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Username: Kc314

Post Number: 3
Registered: 01-2010
Posted on Friday, January 08, 2010 - 05:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Absolutely, thanks.
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Old_school (Old_school)
Senior Member
Username: Old_school

Post Number: 372
Registered: 01-2009
Posted on Friday, January 08, 2010 - 03:36 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

It really shouldn't make any difference. Make sure and use wood decking and not OSB OR plywood for the nailing surface though
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Kc314 (Kc314)
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Username: Kc314

Post Number: 2
Registered: 01-2010
Posted on Friday, January 08, 2010 - 01:49 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Is there any reason not to use spray foam insulation beneath a slate roof? This is new construction, with the whole house using closed-cell foam insulation, and the attic will be a finished room.

(Message edited by Kc314 on January 08, 2010)

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