Mold removal in an older Lago Vista house is mostly a containment problem, and the reason for that is inside the walls. A good share of the stock out along Lohman Ford, and on the side streets climbing off Bar K Ranch Road, went up in the 1970s, when a stud bay was not routinely blocked and every trade that came through cut a hole in the top plate and moved on. The cavity you are standing in front of is connected to the attic. Sometimes it is connected to the bay in the next room.
So the growth runs past the stain, and a crew that seals the room and starts cutting has sealed half of it. Air still moves through the wall, and it takes spores with it. We treat the cavity as part of the containment: openings at the top plate get closed off, the room is held under negative pressure, and the pressure difference is set so the wall draws into the work area instead of pushing into the attic. HEPA scrubbers run the whole time anything is open.
Finding the edge before the saw comes out
Surface readings on old paneling and thick painted plaster tell you very little, so we take them inside the bay: a small hole low in each stud space, a pin probe or a borescope through it, and the number written on the wall in pencil. That is the map the cut line follows. Once the barrier is up, ruined board, paneling, and slumped batt insulation leave bagged, sound framing is HEPA-vacuumed and treated, and the leak that started it gets dried and read again the next day.
- Readings taken inside the stud bay, not off a painted surface
- Top-plate and chase openings sealed so the cavity cannot vent into the attic
- Colonized paneling, board, and insulation bagged inside the barrier
- The source dried to a number, then read again after a night with the equipment on

The leak and the growth it fed usually sit on one claim, so we keep one file: dated photos from before the barrier went up, readings by room and by day, and a written scope of what came out and why. We report what the meters say. Whether it is covered is a call your carrier makes, not us. Call (512) 271-5099 and tell us how that wall is finished and what the room smells like.










