SIP Twin House Mapleton ND

Location: Mapleton, ND

Project Information

Project Type: Residential, Multifamily
Manufacturer: Enercept
Builder: Ryezon Construction
Design Professional: Natural Flow Home Design
Year Built: 2023


High Performance: No
HERS/EUI Index Score:
ACH50 - Blower Test Results:
CO2 lbs./sq.ft./year:

Awards/Certifications: Building Excellence Awards

BEA: 2024 Building Excellence Award - Classic Winner

Multifamily investment property that will be commercialized as dwelling units.

SIP wall thickness and core material: 5 ½" EPS Foam Core

The SIP installer felt that using SIPs saved time in framing because he did not need to hire and insulation crew. Joel added that there was a short one-time learning curve as a new installer, but the pace improved rapidly as they proceeded. Constructor informed that project went together well and he could tell it is a very solid type of construction.

95% AFUE York Natural Gas Forced air furnace with dual-zones.
York #YCE42B22SA compressor (14 Seer air conditioner)
Energy Star rated Greentek air exchange system

Energy-saving materials:
Andersen 100-series windows with 0.32 U Value
Jeld Wen insulated walk doors
Clopay R-19 Overhead Garage Doors

Energy-efficient product:
100% LED lightning

  • The garage is wired for the EV vehicles and a garage heater. 
  • 19' walls in the great room with large windows provide ample natural light for great room and open loft area.


Affiliated Members

Enercept, Inc.

Watertown, SD


SIPA Website Sponsors