RCM Zero Energy

The ROSE Construction Method™ for Zero Net Energy Homes

Introduction

The ROSE Construction Method™ (RCM) was developed to produce projects with a timeless architectural design, while incorporating standardized engineering protocols that result in cost effective and affordable zero net energy construction. What works “best” changes with geographic location, site constraints, budget, and evolving building technologies. By incorporating leading edge building products; state of the art building science practices; and creative architectural designs; each project is customized to meet the specific needs and desires of the owner. Unlike more radical design approaches to zero net energy homes, RCM homes are intended to fit within the architectural context of their surroundings, while still attaining the highest performance levels of energy efficiency, comfort, and health.

ROSE Construction Method™ Minimum Insulation Levels

The ROSE Construction Method Building Envelope+ has double wall, 2x4 stud construction, with dense pack cellulose insulation (R40) and 8" concrete ICF foundation walls, with 5.5" of closed-cell foam (R27). Primary roofs have raised heel trusses with 24" min cellulose insulation (R60). Secondary roofs, walls, and closure zones have closed-cell spray foam insulation.

ROSE Construction Method™ Residential Performance Targets

GRADES HERS Index Targets
Energy Star - 5 Star+, Indoor Air Plus V3.0 <64-79*

1. ROSE BASE LEVELS <60

ROSE Construction Method Building Envelope w/HRV
95% efficient, fuel-fired, heating plant and hot water systems
Rough-ins for possible (future) geothermal, solar thermal, and solar PV additions

Complimentary Strategies to Zero Net Energy Designs

Building Down vs. Building Up, Muti-Generational Design & Aging in Place

In areas of the country that typically cast a full height concrete foundation, it is less expensive to create additional occupied and conditioned space in the lower (“basement”) level of a home than it is to build a third level that doesn't have to be there. It basically consists of putting the 2nd bedroom, 3rd bedroom and 4th bedroom/office, and 2nd and 3rd full bathrooms all down vs. up on larger homes that include a first floor (upper floor) Master Bedroom suite. Conversely for smaller homes, it can be designed with all of the bedrooms on the lower level along with one or two full baths. As long as daylighting, headroom, egress, access and HVAC are designed in advance…..designing a home with a lower level walk-out makes it simpler and far less expensive to accomplish. Think of the lower level as the earth berm segment of the home and you get the picture.