Thursday January 8, 2026 205 N Church Ave Bozeman, MT 6-8 pm
Thursday January 8, 2026 205 N Church Ave Bozeman, MT 6-8 pm
Knowledge, Growth, & Collaboration
Time: 6-8 PM
Location:
205 N Church Ave
Bozeman, MT 59715
Presented by: Josh Blomquist - CWJ Associates
Topic: High Performance House Site Visit
205 N Church
207 N Church
Both buildings include:
R-58 walls
I grew up in Colorado building mostly log homes and cabins with my Dad and brother, moved to
Bozeman in 1998, and officially started my business as CWJ & Associates in 2007 when I built a house for my neighbor across Peach street. I have a degree in Civil Engineering from CU Boulder and have been interested in energy efficient construction since I graduated in ’95.
In 2006 I attended the Green Building Conference in San Francisco where I was introduced to building science by Mark LaLiberte – I was hooked. I then started applying all that I was learning to each project, continually “trying to build a better box”, as l like to say.
In May of 2018, I took the Passive Haus training here in Bozeman, and have been fortunate enough to build two custom homes to PH standards that are currently in the process of becoming certified.
I love digging into all the details of applied building science and high performance building!



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BS* and Beer is a local discussion group for builders, architects, engineers, tradespeople and anyone interested in better building. Building Science* is simply the laws of physics, thermodynamics and fluid dynamics applied to the building. We gather monthly at a brewery, pub or job site to discuss these topics in our industry, enjoy a few refreshments, and engage in the high performance building community.

Constructs buildings, structures, and infrastructure

Designs and plans buildings with a focus on functionality and aesthetics

Solves problems by designing, developing, and improving systems.

Skilled workers who specialize in manual and technical crafts.
Building thermal dynamics refers to the study of how heat is transferred, stored, and distributed within a building. It encompasses the interaction between the building’s materials, design, and environmental factors such as sunlight, wind, and temperature. Thermal dynamics in construction involve understanding heat flows through conduction (via walls and roofs), convection (through air movement), and radiation (from sunlight or heated surfaces). Effective thermal management ensures energy efficiency, occupant comfort, and sustainability, guiding the choice of insulation, ventilation systems, and materials to regulate indoor temperatures efficiently.
Building fluid dynamics refers to the study of how air and liquids move within and around a building. This includes analyzing airflow for ventilation, heating, and cooling systems, as well as the behavior of water in plumbing, drainage, and rainwater management. In construction, fluid dynamics helps optimize energy efficiency, indoor air quality, and occupant comfort by modeling air circulation, controlling moisture, and ensuring efficient water flow. Key factors include wind forces, pressure differences, and the design of ducts, pipes, and building openings to balance performance and sustainability.
Contact us to learn more or to be more involved!
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