Build 2x6 stud walls where DWV pipes and holes exceed the limits described above. Rent a right-angle drill and use Selfeed or hole saw bits for boring large holes.

Around the House: There's more than one way to insulate exterior walls. Updated: ; Mar. 21, 2010, 12:00 p.m. | Published: Mar. 21, 2010, 11:00 a.m. Published: Mar. 21 ...

Would you bother to use 2x6" for the walls?It's much more expensive, but I like the idea of R19 in the walls (plus styro-board for a combined ~R25) and haven't seen anything higher than R13 for ...