PaPaPeng wrote:
On Mon, 26 Nov 2007 10:38:47 -0800 (PST),
wrote:
Walls are R11 with an extra inch of styrofoam and
housewrap under the siding.
That's your problem. The walls should be R30. ...
That's absurd.
There's virtually no house w/ _walls_ of R30.
2x4 wall cavity w/ fiberglass is R11 (2x6 will yield R19). The inch of
styrofoam is another R5 for a total of about R16. The rest of the wall
exterior sheathing and interior drywall while not insulation per se,
will add another fraction. That's a plenty-well insulated wall.
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