Details in 4D

Roof valleys are like gutters with a steep pitch, but the stakes are higher for valleys than they are for gutters

A dry and healthy crawlspace is sealed tightly against water and air leaks

Peel and stick Z-flashing and some padding pushes a ledger flush with the face of the thick panels. A cover sheet of peel and stick completely waterproof the ledger before the deck is framed

A four-dimensional detail drawing of an insulated and damp-resistant basement slab

Wait, what?

Roofs peel off from the edges, so it is critical to hold them tight

Outside insulation is an effective way to keep heat in. The devil is in the details, such as this one

Overlapping tapes with gravity in mind keeps water out of the house

A retrofit solution that works great for a low-skill workforce—like volunteers