Local Treatments in South San Francisco, CA

Local Context

A Walkable Attic in a Buri Buri Ranch Is the Argument for Drilling Instead of Tenting

Local treatment is the right call when we can find and reach the gallery system, and South San Francisco has a lot of houses where that is true. The mid-century tract stock across Buri Buri, Westborough and Winston Manor typically has an attic you can move through, exposed rafters and top plates, and a raised sub-area with reachable joists and sill plate. A drywood colony confined to a rafter tail or a window header in that kind of structure can be drilled and injected without tenting the house.

The limits are honest ones. Orange oil (d-limonene) is a contact material — it works where it reaches the gallery and nowhere else. Borate products applied to bare, accessible wood in an attic or sub-area both kill and leave a residual barrier, but they cannot penetrate paint, stucco or plaster. So on a house where framing is sealed behind the finish, or where a beam runs from the eave through to the interior under a low-slope roof, targeted work stops being the whole answer.

On the fog side of the city the finding is often subterranean instead, and that changes the method entirely. Subterranean termites (Reticulitermes) live in soil and reach wood through mud tubes on stem walls and pier blocks, so targeted work there means treating the structure-to-soil interface and correcting what feeds it — wood-to-soil contact, a leaking hose bib, a sub-area that holds moisture all summer. Injecting a rafter would miss the colony completely.