Townhome bedroom wall and ceiling tested before a ductless heat pump is mounted
Example project
- Home
- 1970s end-unit townhome in Plymouth with a bedroom over the garage that never stays warm
- Original request
- Mount a ductless heat pump head high on the bedroom’s outside wall
- Testing
- Three samples by an MDH-certified inspector: the joint compound on the outside wall, the bedroom ceiling texture and the closet ceiling
- Found
- Positive joint compound on the outside wall, right where the line set hole is marked
- Clear
- No asbestos in either ceiling
- Timeline
- Less than an hour of sampling, then lab results within days
- Area
- About 2 sq ft of wall
- Estimated testing cost
- $400
Scope of work
One short visit from an MDH-certified inspector, three samples taken at the drill and bracket spots, lab results for every sample and a one-page report that marks each spot on a sketch of the room. Cutting out the positive patch is priced on its own.
Project overview
In this example, the owners of a 1970s end-unit townhome in Plymouth want heat and cooling in the cold bedroom above the garage. Their installer will hang the indoor unit near the ceiling and bore one hole through the outside wall for the refrigerant lines.
The installer asks for the wall and both ceilings to be tested before anything is drilled. The ceilings come back clear. The wall’s joint compound does not, so a licensed crew cuts that small patch out wet first. At about 2 square feet, the patch is not more than 6 square feet of friable material, but MDH says that does not make it safe.
The goal
The goal is a warm bedroom over the garage, with the only positive patch gone before the wall is drilled.
Process
- First visit Three samples, cut by an MDH-certified inspector at the installer’s pencil marks.
- Lab An accredited lab reports on the bedroom wall and ceiling samples one by one.
- Report The report lists the three samples, with the wall marked positive.
- Then The small wall patch is cut out wet, and the heat pump goes up.
Planning right
- Have the installer mark the unit and the hole on the wall before the visit.
- A ceiling that tests clear can stay as it is.
- File the report with the townhome papers; it maps each sample spot.
- If the plan moves to another wall, that wall gets its own sample.