How far below grade should I insulate 12 inch poured concrete walls for a greenhouse?

— Jason Warren New Martinsville, WV

Answered by Morgan Audetat on August 19, 2013

Can old vinyl siding on a house produce fine dust?

— Rose Waltham, MA

Answered by Erik Henry on August 13, 2013

Are Allure Ultra, engineered ash plank and 3/4" ash hardwood considered green?

— monte morton Harbor City, CA

Answered by Erik Henry on August 13, 2013

How do I insulate the attic pull-down door in the ceiling of my hallway?

— Beverly Olinde Ventress, LA

Answered by Erik Henry on August 13, 2013