It's a question we get, implicitly, all the time. Someone visits a project, sees the clean lines and contemporary finishes, and their brow furrows slightly. "So... you use straw? But it doesn't look like..." They trail off, not quite sure how to finish.

What they mean is: it doesn't look like what they picture when they hear natural building. No exposed bales. No truth window. No rounded walls softened by hand.

They're right. And that's kind of the point.

In the world of high-performance building, few topics are as critical—and as often misunderstood—as vapor control. The way moisture moves through a wall assembly has long-term implications for durability, indoor air quality, energy performance, and occupant health.

While foam insulation delivers high energy performance, it carries serious risks—from compromised indoor air quality and hidden moisture damage to long-term health impacts. As the building industry evolves, vapor-open, bio-based alternatives offer a safer, more sustainable path forward—supporting both occupant wellbeing and building resilience.

Massachusetts’ new ADU regulations make it easier than ever for homeowners to create flexible, affordable living spaces. At Rare Forms, our pre-designed, sustainable ADU kits are built to meet these guidelines—offering faster construction, lower costs, and healthier homes that are better for people and the planet.