Jamie Letson, owner of Letson Enterprises, was the general contractor for the project. The couple hired him to integrate the old with the new, but it was his idea to take it one step further and make the build as green as possible. Let's first examine his restoration work on the cabin, and then look into the new build.
For the cabin, the team literally needed to start from the ground up. There wasn't much of a foundation (the original foundation was a mere eighteen inches deep), but the team wanted to keep the original base as is it is part of the historic structure. So, in sections, they excavated down to the required minimum depth of 48" and poured new concrete underneath the existing. The new concrete incorporated 30% fly ash, which is a by-product from the Craig coal power plant and is essentially filler material that allows the team to use less new cement and more recycled product.
Much of the upper portion of the cabin roof and walls was rotten, so the team disassembled it log by log. They numbered the logs that were salvageable and replaced the rot with logs from the other part of the cabin that had been taken apart for the addition. The cabin had not previously been insulated, so they used Corbond spray-foam insulation from Columbine Insulation and replaced all of the chinking between the logs while they reassembled the cabin. Since the log cabin windows had already been compromised, new energy efficient windows were installed into the existing cabin window openings. Some of the old glass was later integrated into other parts of the house as internal windows. The glass is so old it has begun to run and has an antique "wavy" look, a truly spectacular touch to an already impressive rebuild.
The new addition was also centered on sustainable building practices. Letson used ICFs (Insulated Concrete Forms) for the foundation perimeter and incorporated the fly ash into the concrete here as well. The insulation uses BIBs (Blown in Batts), also from Columbine Insulation. The house is constructed so tightly (no drafts) that Letson needed to install an HRV system (Heat Recovery Ventilation) that controls air exchanges.
Letson Enterprises, Inc.
2955 Village Drive, Suite 10
Steamboat Springs, CO 80487