The Problem with Spray Foam Insulation | Ep. 48

Few building materials create as much debate as spray foam insulation.

It can air seal, insulate, and control vapor extremely well, but it can also create concerns around installation quality, moisture, off-gassing, and what happens when something goes wrong behind the wall.

In this episode, I break down the pros and cons of spray foam, situations we’ve encountered on real projects, and why this decision should ideally be made long before construction begins.

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In this episode:

- Why builders like spray foam

- Open-cell vs. closed-cell

- VOC and off-gassing concerns

- Moisture and installation risks

- Alternatives and hybrid approaches

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