15. Dergance - Coppin

We have another house that will just be finishing construction in time for the Tour this year. This modernist glass and stone spec house has a number of green techniques in the home. While there is no way to gauge this yet, but it is anticipated that it will be a Net-Zero, or near Net-Zero home.

Built in an older neighborhood with bungalows as neighbors, it takes advantage of the existing mature trees to buffer the sun coming into the house during the summer. It is also designed to have an exterior that will require no maintenance as most of it is stone, composite siding and glass.

This large home was built using a number of products that do not emit harmful or offensive chemicals when used. Several methods were used to reduce the dust in the air and improve the indoor air quality.

The area behind the entry is flooded with light from a large window wall.

The weakness that the architects/owners/developers see with the house is the economic viability of all the green and energy efficient features used.

Thermal Tempering Features
Large windows
Large basement window wells
12’ long clerestory in the kitchen
Shade trees planted for sun control
Longer than normal eave overhang on south elevation for sun control

Thermal Features
R – 28 walls
R – 50 roof
SIPS walls

Photovoltaic Panels
2.7 KW roof mounted array
12 panels
Grid tied

Thermal Envelope / Thermal Comfort
Low – e windows
Heat Exchanger
Expanding foam insulation around windows and outlets
Zoned heating
Zoned cooling
Night set back thermostats
SIPS walls

Lighting
Centrally located window wall floods house with light
Light shelves in Kitchen
CFLs

Construction Techniques
SIPs
Reclaimed stone for the exterior
Recycled siding for the exterior
Living Roof
No VOC paints
Reclaimed wood floors used as wood wall panels
High performance windows
High efficiency furnace

Green Features
Soy based polyurethane foam insulation
Specified materials that did not contain harmful chemicals
Oriented strand construction board
Some FSC certified lumber
Water based floor finishes
Engineered lumber floors
Fly ash concrete
Vegetated roof
Zero maintenance exterior

Water Features
All toilets are 1.28 gallon flush
Low flow shower heads
Low flow faucets
Xeriscaping
Drip irrigation