• 253-858-7472

WSU Ogden Net-Zero

Ogden, UT

Participant information

Big Sky Insulations
Laurie Miller
15 Arden Drive
Belgrade, MT 59714
Phone: 253-846-6033
Email Address: laurie.miller@premiersips.com
Website: www.bigskyrcontrol.com


Single Family Homes (under 3,000 sq ft.)

High Performance: No

Project information

WSU Ogden Net-Zero
Ogden, UT 84040

Date Completed: May 2020

Dimensions of building: 24' x 52' without the covered porch

Total sq. ft. of conditioned space: 2,552 sq. ft.

Built By (if different than applicant)

Wadman Construction/WSU Students
Casey Neilson
2920 South 920 West
Ogden, UT 84401

Panels Manufactured By: Big Sky R-Control

Designed By (if different than applicant - SIPA will only recognize members)

Weber State University Davis
Jeremy Farner
Layton, UT 84040

Total sq. ft. of conditioned space: 2,552 sq. ft.

Describe the end use of the building:
The home was sold below appraised value for via a lottery. We had 13 full price offers and those names were put into a drawing to see who got the first opportunity to buy the home. A young couple expecting their first child bought the home. They are both ironically alumni of the University.

How did SIP construction help you get this job?
SIP construction allowed us to maintain a super tight building envelop and eliminate 95% of all thermal bridges. As part of the 2020 Solar Decathlon home local build challenge, we were trying to get to Passive House Standards of R30 exterior walls and .6 ACH/50. SIPS were selected because of the ease of attaining these goals for the project.

SIP wall thickness and core material: 6-1/2" R-Control Max Graphite Core

Describe the benefits of using SIPs on this project. Did SIPs help save time, labor, construction costs, or energy?
SIP save labor and time. We were able to set the walls in 6 hours and be ready for trusses the next day. The energy savings from nearly eliminating all thermal bridges and superior air sealing saved us a ton of energy so we could reach our goal of being Net Energy Positive. The home is designed to offset all of its own energy usage annually as well as charge an electric car to drive up to 20 miles per day.

Describe any innovative design elements or structural engineering involved:
This home was designed to be off the shelf so anyone could do it. Our website is dedicated to showing all techniques used so anyone can adopt this building method. www.weber.edu/solardecathlon

Please list any certifications the project received, such as ENERGY STAR, LEED, National Green Building Standard, WELL, Passive House, Green Globes or local green building programs. Only list certifications that are completed:
Energy Star 4.1, Net Zero Ready

HERS Index:  -8

Blower door test results: 2.3 ACH50

Energy use intensity in kBtu/ft2: 18.82 KBtu/SF

Describe the HVAC system used on the project:
This is an all electric home. It uses one ducted mini split to heat two bedrooms upstairs, 2 ductless mini splits to heat the great room upstairs, and 5 ductless mini split wall mounted units to heat and cool all other rooms. There are no exhaust fans in the home, but their are exhaust registers that are connected to an ERV that provides 90 CFM of pre-conditioned fresh air into the home.

Describe any other energy-saving materials used in the building envelope other than SIPs. List U-values of windows used and the U or R-value of any insulation materials:
We used Insulated Concrete forms for the foundation which perform at an R49. The Attic has 16" raised heel trusses to R60 blown in fiberglass insulation

Please list any energy-efficient products or design features, such as lighting, hot water heating, appliances, passive solar:
Energy Star Beko Appliances; Fridge, Range, Microwave, Dishwasher, Washing Machine, Ventless Dryer
All LED fixtures except for bath vanity lights that had LED bulbs
Eco Net enabled Rheem Heat Pump Water Heater to super heat water from 10-2 to load shift our solar export
ERV to provide constant pre-treated fresh air in lieue of bathroom exhaust fans
Home incorporates passive solar design to let morning heat in through large east windows, minimize solar heat gain in the afternoon through west facing windows. Maximized North facing windows to let in ambiant daylight and only have one window on the south side of the building. Large overhangs block summer solar heat gain and allow winter solar heat gain.

Were any solar panels installed on the project? If so, indicate the size of the system:
There are 39 solar panels on the roof that power the home and charge an electric car to drive up to 20 miles per day. One solar panel trickle charges the battery backup system for the critical loads (Fridge, range, lights, and outlets in the great room).

Please list any sustainable materials or design features not listed above, such as recycled materials, low-VOC finishes, landscaping, etc.:
Zero VOC paints
Drought resistant sod that needs 1/2 the irrigation of typical sod
100% recycled LVP that can be recycled back into new flooring if it ever wears out
Wool carpet upstairs that is low pile and will last 20-30 years
Cabinets were manufactured within 50 miles of the project

Any additional comments on the project:
Please see our website with extensive information on all products used in the project.

Click on a photo to enlarge.

Builder Information

Wadman Construction
Casey Neilson2920 South 920 West
Ogden, UT 84040

Phone: 801-621-4185

Panels manufactured by Big Sky R-Control.

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