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Partially-complete two-storey post and beam addition to passive solar house.

EnergySage Customer
Quick Facts
Energy Needs Met

50% to 74%

of space heating

What You Need to Know


Timber frame saltbox addition on north side of passive solar house that was built with SIPs. Has staggered 2×4 studs on 2×6 plates for continuous foam insulation, supplemental radiant heat built into floor, argon-filled windows.

Other Benefits:

Open floor plan

Maintenance Requirements:

About the only maintenance the addition will need is normal cleanup for a house with three teenagers and two dogs. Central vac and open floor plan make cleaning the floor pretty easy.

Efficiency or Sustainability Improvements:

Tankless water heater, centrally-located wood stove (we gather and split the wood ourselves), the entire building is very tight and well insulated.

My Motivation:

I've been a believer in protecting the environment since they called it conservation. It's the lifestyle I want to have. I also really like the zero heating bill in the winter.


I think the most important retrofit you can do is apply caulk to leaks.

Experience with Installer:

Get references from past customers for your contractor. Long story, which we can share with visitors.

Additional Notes:

See two recent blog posts about the project at

Open House Info:

Easily find the house on Google Maps. If you can't come during the tour, call to arrange a visit.

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