174 Grand Street in Williamsburg / Brooklyn
mixed use building: private residence above retail store
this our attempt to build NYC's first new building which fulfills the strict german Passiv Haus standard.
walls: load-bearing 8" concrete masonry units with 6" EPS exterior insulation
parapets: autoclave aerrated concrete blocks to avoid thermal bridging
exterior finish: EFIS with 7" EPS
interior finish: CMU painted, all electric installation exposed
roof: 4" concrete on steel deck covered by 8" rigid insulation
windows: Walch Windows from Austria
residence entrance door: custom 4" thick wood panel
one Mitsubishi ducted indoor unit for remaining heating and cooling demand.
Zehnder ComfoAir 350 Enery Recovery Ventilator
exterior sun sail at the south facade to avoid summer overheating
S: Murray Engineering
PH: us and David White
photos by Raimund Koch