New homes can be amazingly more energy efficient than older homes. Better windows, better insulation, more efficient heating and cooling, zoned heating and air conditioning, radiant-heat-barrier type attic decking, and improved air infiltration for starters. These features are also effective in resisting the formation of black mold.
Blown optima outside wall insulation, batted insulation at barrel attic ceiling, and sound-control interior wall insulation
Blown optima insulation on outside wall, batted insulation at ceiling, and sound-control insulation at interior wall, not concrete storm room enclosed by studs for nailing sheetrock
Insulation baffles prevent thick insulation from resting against roof decking and sealing off of air flow from eave vents
Close-up of Tyvek house wrap with Ffortiflash tape at window and door frames, note the workmen installing a protective film over the Low E windowpaness.