So called Advanced Framing has been promoted as a technique to improve efficiency and energy performance for house walls. But it also seems to have been designed to ensure that nobody adopts it.
First we should cover the basics - what is Advanced Framing? It is a "system" or practice of house framing that endeavors to reduce the amount of wood going into the wall, and as a result reduce thermal bridging and increase energy efficiency. It is also interchangeably referred to as Optimum Value Engineering or OVE which perhaps speaks more to the process that came up with this. Value Engineering has come to be a euphemism for cutting costs. In this case, cutting out everything but what is essential to frame a house.
Before we look at exactly how Advanced Framing accomplishes these goals let me just air my gripe. The details of the AF framing techniques are smart, efficient, and dare I say common sense. Yet taken as a whole "system" it is overly rigid, inflexible, and lacks resiliency. To follow a strict application building elements must fall on the proposed modular grid. This limits possibilities, and dooms existing house plans to significant redesign. Its lack of resiliency means its advantages can be quickly overcome by deviation from its strict use. And while it can save up to 20% in material, it really does not go far enough to create a high performance wall system. I feel this combination is a barrier to adoption that will prevent it from becoming the de-facto method for framing houses in the US. Yet many of the individual details are easy to implement, and many builders have already taken this hybrid approach. With the help of this diagram lets look at some of the key aspects of AF, the ones that are easiest to adopt.
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