Insulation Installation in Boulder Creek, CA

Local Context

A Boulder Creek Summer Cabin and the House Rebuilt Next Door Are Two Different Buildings

Much of the older housing here was framed as a summer place, not as a house to be heated through a wet mountain winter. Plenty of those cabins went up with almost no insulation, then had a layer blown in decades later that has since been compressed, contaminated, or soaked. Winter nights here are cold and the rain runs from November through March, so those buildings work hard for what little envelope they have.

The houses rebuilt after CZU sit on the other side of that line. They go in under current Title 24 energy standards with continuous air sealing, proper ventilation, and full attic and floor R-value. On a street where a rebuild stands beside a mid-century bungalow, the two structures behave nothing alike in the same weather under the same canopy. Bringing the older one closer is mostly air sealing plus getting real depth back into the attic.

Pests decide the sequence. Blowing insulation into an attic that roof rats or gray squirrels are still using buries the problem rather than solving it, and with the wildlife pressure this community gets that is a common and expensive mistake. Entries get sealed, contaminated material comes out, and only then does new material go in. Otherwise the new insulation becomes nesting material inside a season.