How to Kill a House

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Since the 1950s, American homes began to add insulation for energy efficiency, but it had a dreadful unintended consequence. The way it was done – drilling from the outside and stuffing cellulose and then plugging the holes – meant creating a real danger in pre-World War II homes. This danger was rotting of the wood in the walls. Here’s how it works. Uninsulated and unsealed, the walls can dry out because they can “breathe.” Now we have created a way for water to enter through drilling, and once in, moisture is retained by the absorbent cellulose – which will lead to the wood slowly rotting. So unless you wish to witness the slow-motion destruction of your vintage home, you have to fix it. Trouble is that done right, insulating the walls of an old house is an all-or-nothing proposition. It’s a serious business and costs big money. That’s all there is to it.
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How to Kill a House
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