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SW04 Energy Retrofit - First Step to Green Building

Every green building project begins and ends with energy efficiency. A new program offered in Seattle by Community Power Works and implemented by Kohl Construction shows you how everyone in Seattle can be on the path to green.
SW04 Energy Retrofit - First Step to Green Building

Location

Seattle, WA 98122

Kohl Construction | Community Power Works

Every green building project begins and ends with energy efficiency. A new program offered in Seattle by Community Power Works and implemented by Kohl Construction shows you how everyone in Seattle can be on the path to green.

Kohl Construction - a Community Power Works approved contractor

Kohl Construction is a small, custom remodeling company based in Seattle, WA.  We have over 25 years of experience performing quality remodeling work on residential homes, building new homes and commercial work.

Kohl Construction provides excellent workmanship and a satisfying experience for our customers.  We pride ourselves on a safe and clean work environment and paying conscientious attention to green building practices.

The Community Power Works home energy upgrade process consists of three main phases: conducting a home energy assessment, connecting with a Community Power Works-approved contractor to choose and implement your upgrades, and receiving a free quality assurance inspection when the work is complete.

Kohl Construction, in conjunction with Jay Lazerwitz has completed multiple remodels on this home. This year the residents asked if we could upgrade the house to make it more comfortable in the winter. Some rooms in the house were so cold they shut them off in the winter.

We started by introducing them to Community Power Works. We completed the energy audit and found areas that needed upgrading.  We incorporated that work into the other remodel work.

The homeowners are environmentally conscious and had independently made efforts to lower their energy and water consumption.

Key features:insulation

  • High efficiency furnace, regularly maintained
  • Thorough insulation and weather sealing
  • Dense pack cellulose in the walls and between floors
  • Where accessible, the attic was insulated to R-49
  • 1000 gallon tank for rainwater collection used for garden irrigation


Kitchen

The original kitchen was separated from the rest of the house by a wall that impeded light and flow.  The new kitchenkitchen design and work addressed both of these issues.

Key features

  • Custom cabinets were made with FSC wood.
  • Open plan, takes advantage of substantial daylighting and low voltage lighting reduce the energy needs.
  • Finishes were low VOC, including a water based floor finish.

Basement

The basement was finished to create a bedroom, office and rec room.  The crawl space storage under the front of the house was sealed and insulated and is now used as a wine cellar.

Key Features:

  • Spray foam and fiberglass bat was used for tight insulation.
  • Additional air sealing

 

Front Entry

The Sycamore trees had broken up the sidewalk and impacted the grade. We built up the grade in front to accommodate the roots of these large trees. As a consequence, there is only one step up to the front porch.  Special care was taken around the perimeter of the house to protect the framing from dirt contact, as the grade was built up 8” over the foundation wall.  The roof-line on the porch was redesigned by Jay to create a more attractive and welcoming entrance. The homeowners replanted with native species.

Key Features

  • Re-grading reduced the steps into the house, making the entry more accessible
  • Native plantings were used

 

Main Floor

The homeowner’s goal was to create warmer spaces that blended into the architectural style of their home. We started by addressing some structural deficiencies, and blew dense pack cellulose in the walls and between floors. The cracked plaster was repaired and many walls were replaced with drywall.  The river rock fireplace was restored and the sunroom was incorporated into the rest of the house by adding wainscoting, insulating, and air sealing. The electrical and lighting were also upgraded.

Key Features

  • All accessible areas were air sealed and all windows and doors were replaced with new energy efficient units. Gross glazing area was reduced allowing more effective wall insulation.
  • Finishes used throughout were low VOC, including water based floor finish. WindsorONE, a green product, was used for interior trim.
  • Old doors and windows were repurposed by 2nd Use.
  • The homeowners love not living in a wind tunnel.
SW04 Energy Retrofit - First Step to Green Building
Community Power Works Partnerships
SW04 Energy Retrofit - First Step to Green Building
Rainwater Storage
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