05-08-2008, 03:55 PM
|
|
Member
|
|
Join Date: Mar 2007
Location: Ormond Beach, Florida
Posts: 6,619
|
|
|
Re: inverted insulation
Originally Posted by David Wood
Isn't that usually the warm side in Florida?
David,
From the IRC: (underlining is mine)
- SECTION R318
- - MOISTURE VAPOR RETARDERS
- - - R318.1 Moisture control. In all framed walls, floors and roof/ceilings comprising elements of the building thermal envelope, a vapor retarder shall be installed on the warm in winter side of the insulation.
- - - - Exceptions:
- - - - - 1. In construction where moisture or freezing will not damage the materials.
- - - - - 2. Where the framed cavity or space is ventilated to allow moisture to escape.
- - - - - 3. In counties identified as in climate zones 1 through 4 in Table N1101.2.
The easy way to remember which side the vapor retarder should be on is: 'the heated side of the insulation' (even in South Florida, when you put the heat on - which is rarely done - the heat is turned on to heat the inside  ). |