A dumb home needs a Smart Wall

Smart Wall design for insulation

A few years ago when everyone was writing about the smart home, I wrote In praise of the dumb home, which is so well insulated with temperatures so stable that a Nest smart thermostat would be bored stupid.

But designing the walls for a dumb home is not as simple as simply adding insulation; you have to be smart about managing moisture and condensation. You want to stop air movement but not moisture movement. It’s also smart to use healthy materials that don’t burn easily or are full of flame retardants, or are made from fossil fuels.

That’s why this “Smart Wall” developed by Lucas Johnson of 475 High Performance Building Supply and Andrew Legge of Havelock Wool is so interesting. Lucas explains:

Most every wall out there is built with toxic materials and ends up being too vapor retarding and even vapor-closed. Such walls can trap moisture and may become exceedingly difficult dry out. If a building wall or a house can’t dry out, it can lead to all kinds of bad things.

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