Where the smoke goes

Many bungalows and cottages in Park Hill and nearby neighborhoods have a finished half story: bedrooms tucked under the roof with sloped ceilings, dormer windows and short knee walls. Behind those knee walls are triangular attic spaces, often reached through small doors, that run the length of the house.

Smoke rises. In a house with an open stairway, it heads straight up and spreads under the sloped ceilings. Warm, residue-laden air finds its way behind knee walls through gaps around doors, outlets and old plaster cracks. Insulation in those spaces, if there is any, absorbs odor. The upstairs bedrooms can smell worse than the room where the fire started.

These spaces were often finished later than the rest of the house, sometimes by previous owners, so construction varies. One house might have plaster on the slopes; another, paneling or drywall added in the 1970s over original plaster. Each holds odor differently.

Matching the cleanup to what you find

  • IfOdor upstairs but no visible residueThenAsk for knee-wall spaces and the area above the ceiling to be checked. Residue there may explain the smell.
  • IfSoot on sloped ceilings and wallsThenClean surfaces methodically from top to bottom, then seal before repainting so odor does not bleed back.
  • IfInsulation behind knee walls is smokyThenPlan to remove and replace it rather than deodorize it in place. Test first if it looks like vermiculite.
  • IfPaneling or drywall covers original plasterThenSmoke may sit between layers. Opening a small area can show whether removing the overlay is needed.

Upstairs spots that are easy to miss

  • Knee-wall storage spaces and anything stored there, from luggage to holiday boxes.
  • The small attic above the flat portion of the ceiling, usually reached by a hatch in a closet.
  • Built-in drawers and cabinets set into knee walls.
  • Dormer window sash, sills and the cavity around window weights.
  • Closets under the eaves, including the clothing inside them.
  • Bathroom exhaust fans and their ducts if they vent into the attic.
  • Ceiling light fixtures and the boxes behind them.

Common questions

Can an air purifier fix the smell upstairs?
Air filtration helps during cleanup, but it cannot remove residue stuck to surfaces or buried in knee-wall insulation. The smell usually fades only after those sources are cleaned or removed.

General information for Park Hill, not a quote or professional advice. In an emergency, call 911.