Cottage by the Sound: Net Zero Energy and Zero Energy Ready Home Certified


Cottage by the Sound: Net Zero Energy and Zero Energy Ready Home Certified2018-08-09T13:12:42+00:00

Project Description

This three bedroom house was built to replace an older home that was destroyed by Hurricane Sandy. The new house was built with the lowest floor elevated to 17.75 feet above the mean sea level, which is well above the base flood elevation of 13 feet for the location. The ground level garage has flood vents and breakaway walls to prevent damage to the house above.

The house features an open-style layout with French doors facing south for natural light and views of the Sound and community tennis courts. The raised and covered front porch extends the full width of the front of the house and allows the owners to spend time outdoors in the summer enjoying the cool ocean breezes in shaded comfort.

Special Features:

  • Open concept living/dining/kitchen area
  • Covered porch across the front of the house
  • Natural gas fireplace in main living area

Green Building Approaches:

  • Front of house faces solar south for an 8Kw photovoltaic system which was sized to provide enough electrical energy to fully offset all other purchased energy required to operate the house.
  • 1st floor was framed with 16” open-web trusses insulated with 16” of 1/2lb SPF (R-58)
  • Exterior walls sheathed with ZIP R-sheathing (OSB mated to a 1” sheet of polyisocynurate rigid foam board insulation,) to eliminate thermal bridging
  • Exterior walls framed with 2×6’s at 24” spacing, insulated with 2” of 2lb SPF and 3.5” of 1/2lb SPF (R-34 exterior wall assembly, including ZIP-R sheathing)
  • 18” roof trusses filled with 1/2lb SPF (R-65)
  • European triple-glazed windows with u-values of 0.13 (roughly R-8)
  • Fiber cement siding installed over drainable weather resistive barrier
  • Wall-hung, air-source heat pump units heat and cool the entire house
  • Condensing, propane, tankless water heater for domestic hot water
  • Energy recovery ventilation

Project Details

Certifications:

  • Zero Energy Ready Home Certified
  • Indoor Air Quality Plus Certified
  • Energy Star Certified

Project Year:

2014

HERS Score:

-8

Type of Home:

Raised cape

City:

Norwalk

State:

Connecticut

County:

Fairfield

Project Size:

1,700sf