A familiar moment on a remodel

Illustrative example. Not a real job or customer.

Demolition crews pull out the original vanity in a primary bath being renovated in a 1970s home. Behind it, the drywall is black at the bottom and the framing is dark and damp near the old supply lines.

  1. Demolition in that area stops, and the opening is covered with plastic.
  2. The general contractor and homeowner agree to bring in a mold remediation contractor to assess the extent.
  3. Moisture readings show the wet area extends into the wall shared with a linen closet.
  4. A containment is built around the bath and closet before any more material comes out.

The remodel loses some days, but the mold is removed under containment and the new plumbing goes into a dry, clean wall.

Why remodel crews should not just keep going

Ordinary demolition is designed to be fast, not dust-controlled. Tearing out moldy drywall with the same approach used for the rest of the room can send spores and fragments through the house, especially if HVAC returns are open nearby or the crew carries debris through finished areas.

Remediation changes the method: isolate the area, keep it under negative pressure, mist and bag materials, HEPA-vacuum and clean framing, and dry before closing. Some general contractors handle small areas themselves using these practices; larger areas are usually better handed to a remediation specialist.

Immediate steps when mold appears during demolition

  • Stop demolition in the affected area and keep other areas going only if they are well separated.
  • Cover the opening with plastic and tape it to limit spread.
  • Turn off or isolate HVAC returns serving that part of the house.
  • Photograph the find before anything else is removed.
  • Ask what wetted the area; the remodel plans should include fixing it.
  • Check whether the remodel contract addresses hidden conditions and how changes are approved.

Questions for the general contractor

  1. Will you handle the mold area yourself or bring in a remediation specialist?
  2. How will the change affect the schedule and the permit inspections?
  3. How will the remediation and rebuild be documented for the homeowner's records?
  4. If the home was built before the 1980s, has anyone tested for asbestos in the materials being removed?

General information for Cherry Hills Village, not a quote or professional advice. In an emergency, call 911.