Insulation & Air Sealing

Wide tape spans the many layers of a thick wall to make an air tight and water tight seal

Window banks need to line up neatly for the trim to work out. Foam walls add the extra possibility of compressing the backing. So there's that.

Adding brick to the outside of a house complicates insulating outside a slab. So Insulate inside.

An affordable insulated slab foundation suitable for climate zones 4, 5, and 6

A superinsulated sunroom might sound like an oxymoronic idea, but it is not. Just use triple glazed windows and thick foam over the wall framing and roof

A deep energy retrofit in Concord, MA illustrates everything you need to know to bring a house to energy überville

Built tight and verify. And then ventilate.

The final step: center it in the opening, and seal the perimeter

Flashing an In-Betweenie window is a lot like flashing an Innie or an Outie, only it is somewhere in between