There is a growing demand for building materials that meet low-energy goals while maintaining the health, safety, and wellness of building occupants for the life the building. Many products going into high performance and Passive House buildings today are falling short: particularly spray foam. Foam has come to dominate high performance building by claiming a high insulating value, air tightness, and vapor control all in one product. When practitioners are seeking more environmentally friendly alternatives, they are often left scratching their heads about the options, the details, and the possible results.
This presentation will cover the basic building science of high performance enclosures. A wide range of material options such as wood fiberboard, sheathings, membranes, mineral wool, straw bale, cellulose and other insulations will be considered. Airtightness goals will be analyzed, looking at ground, wall, and roof conditions as well as the design, construction, and testing of the assemblies.
The presentation will demonstrate that one can achieve higher performance, greater sustainability, resilience, and building health without foam. We also show how to do it with practical examples, details, and assemblies that make sense.
Learning Objectives: Upon completion participants will be able to:
Who Should Attend:
As we move towards healthy and durable high performance, foam-based insulations, such as spray foam or XPS, present a major challenge. They are often toxic, have high Global Warming Potential (GWP), and tend to fail quickly as an air barrier. Even worse, once foam has failed as an air barrier, it tends to create accelerated rot and mold causing major building failures. The mission of 475 is to provide extremely durable airtightness using healthy, safe, and low-environmental impact materials that are cost-competitive upfront with conventional solutions. Join us for a discussion that will cover how to deliver the lowest-liability yet highest-performance buildings.