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exterior walls

Posted by bc on September 11th, 2000 05:03 PM
In reply to Blue Board by Mark Alexander on September 11th, 2000 04:15 PM [Go to top of thread]

If this is a blue insulating exterior wall board like the pink stuff and the black stuff,(different brands have different colors) and I've seen them all, then building codes allow this. They require osb and bracing at the corners because this other board, despite its extra r value, isn't really good for structural flexing and racking of the walls.

But what is the point of using the insulating board for part of the house and not at the corners if you really want the extra r value and to have a tight house.

Why not spend a little more for osb all the way around with metal X bracing at the corners for the structural concerns and then the blue board on top of the osb all the way around before you put the tyvek on for the extra insulation concerns.

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