Building Envelope

The Sonne Ledge design includes many features to provide an energy and material efficient building envelope:

Efficient Framing

• Stud wall panels, constructed in an enclosed shop then raised on site, allowed for speed of construction and efficient material usage

• Stud spacing was not altered for window/door openings so 2^nd floor studs can align with lower floor studs, eliminating double top plate wherever possible

• Headers designed specifically for each opening, to minimize size where possible (not one size fits all)

• 2-stud corners with drywall clips to minimize material usage and maximize insulation in corners

Thermal Envelope

• Continuous thermal envelope:

• Insulated Concrete Forms (ICF) foundation and basement

• In non-ICF areas, blueboard insulation brought up to sill plate on all exterior foundation walls

• Rigid insulation sandwiched between header boards

• Marvin Integrity windows: http://www.integritywindows.com/?page=Green_Building

• Advantech ZIP system for exterior sheathing; the built-in, water-resistive barrier and tape-sealed joints provide a weather-tight house at the sheathing stage http://huberwood.com/

• Two-part insulation system for highly effective thermal envelope:
• Dense pack cellulose (recycled newspaper) insulation (12” in roof and 4” in walls)

  

• Blue board insulation over wall and roof sheathing as continuous thermal break around building frame (see curved roof insulation photo below)
  

  

For more information on the design and construction practices, please contact Knickerbocker Group at info@knickerbockergroup.com.

For more information on the dense pack cellulose or with other insulation questions, please feel free to email Charlie Huntington at I&S insulation, insulate@tidewater.net.