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Smart Home Pensacola

Pensacola, FL

Participant information
Loxley Hawk, Inc.
David Lars Butler
1844 Northwestern Parkway
Pace, FL   32571
Phone: 850-336-9000
Email: david@loxleyhawk.com
Website: www.loxleyhawk.com

Category
Single Family Homes over 3,000 sq. ft.

High Performance:
Yes

Project information
Smart Home Pensacola
Pensacola, FL  32507

Date Completed:
October 2019

Dimensions of building (all floors of multi-story building):
Ground level 48’ x 84’
1st Floor 48’ x 84’

Total sq. ft. of conditioned space:
3,342 sq. ft.

Built By (if different than applicant)
Loxley Hawk, Inc.
David Lars Butler
5677 Tilubo Lane
Pace, FL  32571
Phone:  850-336-9000

Panels Manufactured By: Company Name (members only):
Fischer SIPs

Designed By (if different than applicant - SIPA will only recognize members)
SIPS Development – Fischer SIPs
Damian Pataluna
1844 Northwestern Parkway
Louisville, KY   40203
Phone:  502-774-5644

Describe the end use of the building:
LEED Certified, passive solar, energy efficient, Energy Star, Fortified, Net Zero Residence ofor Mr. and Mrs. Switzer.

How did SIP construction help you get this job?
In the beginning we evaluated 3 types of building materials, ICF, SUPs and conservational 2x framing with foam insulation.  Overall, SIPs won out for the value added to the project; namely savings on foundation (elevated concrete deck on pre-stress piles) due to weight reduction over ICF.  Value to us on waste management. Diverted waste sue to RTA project.  Energy efficiency due to increase insulation values, especially performance values.  Fortified construction (160 MPH 3 second gust, nominal 124 MPH, Exposure D).

SIP wall thickness and core material:
8-1/4”

SIP roof thickness and core material:
12-1/4”

Describe the benefits of using SIPs on this project. Did SIPs help save time, labor, construction costs, or energy?
Speed of construction and time saved; about 3.2 weeks over ICF and 2 weeks over 2x construction.  Insulation value of SIPs added to our achieving our Net Zero goal.

Describe any innovative design elements or structural engineering involved:
Passive solar – allowed for daylighting while rejecting heat in the Summer and allowing for solar heat gain in the Winter.  24’ EuroWall bifold door was installed using a designed SIP header system.  This allows the owners to open the living room to the open-air deck and transition the living spaces into one big area.

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:
LEED (on track for Platinum)
Energy Star
Passive House
Water Sense
Energy Ready Net Zero Home

HERS Index (required only for High Performance Category and recommended for residential projects:
-38 with solar

Blower door test results (ACH50) (required only for High Performance Category and recommended for residential projects):
2.51 ACH50

Energy use intensity in kBtu/ft2 (required only for High Performance Category and recommended for commercial projects):
Cooling geothermal heat pump kBtu/hr = 50.8, EER = 18.30
Heating geothermal heat pump kBtu/hr = 38.2; COP = 5.34

Describe the HVAC system used on the project:
Geothermal heat pump with heat recovery buffer tanks.  Rejected heat is captured and is used to supplement the heat pump water heater unit.  We deliver 107 to 115 degree water to HP water heater to assist in getting us to 130 degree discharge temperature.  While this home is not sub metering the HP water heater – Gulf Power, our local utility, has monitored this system and have estimated $3.00 to $4.00 per month in energy cost.

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. (judged only for High Performance Category)
Windows (693.5 sq. ft.)
a. U-Factor U=0.29 – 337.5 sq. ft. – SHGC=0.19
b. U-Factor U=0.34 – 192.0 sq. ft. – SHGC=0.30
c. U-Factor U=0.37 – 124.0 sq. ft. – SHGC=0.20

Please list any energy-efficient products or design features, such as lighting, hot water heating, appliances, passive solar (judged only for High Performance Category:
Noted – Water heating is accomplished by using a heat pump water heater along with 2 supplemental buffer tanks to capture rejected heat created by geothermal HVAC system operations. House is built using passive solar designs – Rebecca Bryant, Architect, (WaterShed 302 Magnolia Avenue, Fairhope, AL 36532) is certified in passive homes design.

Were any solar panels installed on the project? If so, indicate the size of the system (judged only for High Performance Category):
We installed a 23.76kW DC solar array.  Using LG Neon 330 Watt Solar Panels we have 6 strings of 12 panels.  SolarEdge Inverters and RUSU LitION batteries are used to off-set power requirements of the home.  We also have engaged with the local power company, utilizing Net Metering and a tool to store any over production during the day to use int eh evenings when solar income is exhausted.

Please list any sustainable materials or design features not listed above, such as recycled materials, low-VOC finishes, landscaping, etc. (judged only for High Performance Category):
In the very early concepts of this project, Loxley Hawk, Inc. was hired to lovingly de-construct a home on the property that was built in 1902.  We salvaged approximately 60-70% of the home and incorporated material back into the new construction.  For example, the main entry steps were salvaged and re-built in the new house, along with fireplace mantles, doors, wainscot paneling and the framing timbers we used to construct the Heart Pine floors.  These timbers are known to be original old growth wood and are estimated to be 400 to 500 years old.

Any additional comments on the project:
This project has been an extremely fun and challenging project to pull off.  The owners have been great to work with and value the energy efficiency and re-purposed materials used to build have added so much character to this project, making a one-of-a-kind stand alone.

Click on a photo to enlarge.

Builder Information

Loxley Hawk, Inc.
David Lars Butler5677 Tilubo Lane
Pace, FL 32571

Phone: 850-336-9000
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Panels manufactured by FischerSIPS.

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