Schone Residence, Shell Remodel

Status: Under Construction

Architect: U/R Design

PHPP retrofit, Passive House retrofit

Resting on rural land just west of Niwot, Colorado, the house was purchased the replace a home burned in the ’4 Mile Fire’ in Boulder County in March 2011. A 1969 semi-modern bi-level, the structure is a combination of 2×4 stick frame and a post-and-beam living space with typical insulation and air tightness of its era. The house has been transformed into a Prairie Style form with craftsman details with improved views, upgraded interior spaces, and an engaging entry porch. The Passive House Planning Package modeling by RMPH provides a optimized exterior insulation thickness for the best return on investment while maintaining overall performance.

The target was to dramatically reduce air infiltration, take advantage of cool air from a nearby stream, alleviate thermal bridging, replace poor windows, and provide fresh air. A combination of blown-in cellulose and an exterior board insulation, improved foundation insulation, a modification of the existing heating system, and adding an efficient heat recovery ventilation system have been designed to signifigantly improve energy efficiency.

RMPH provides detailed energy modeling for non Passive House retrofits to provide information on thermal bridging, insulation values, HVAC sizing and window performance specifications.