The honest answer is that popcorn ceiling removal generates dust. It has to. You are physically removing a textured coating from every square foot of ceiling overhead. What separates a clean job from a mess is how the crew contains that dust and cleans up as they go.
Wet scrape method
The single biggest factor in keeping dust down is the wet scrape method. A garden sprayer mists the ceiling with clean water until the texture softens. Softened texture comes off in wet clumps rather than airborne dust. It falls onto plastic sheeting instead of drifting across the room.
Dry scraping is faster but creates far more airborne dust and is only used when the ceiling has already been sealed with paint that will not accept water.
Containment
Before any scraping starts the crew masks off the room. Plastic sheeting goes over the floor and up the walls a couple of feet. Furniture is moved out or covered. Doorways to other rooms are sealed with plastic and painters tape. Vents in the work area are covered so the HVAC system does not carry dust through the rest of the home.
During the work
You will hear scraping, mist sprayers, sanders and a shop vac. The rest of the house should stay clean because the plastic seal keeps the work zone isolated. The crew changes out plastic between phases and vacuums the work area daily.
After the work
Once the finish coats are dry the plastic comes down, floors are vacuumed and any incidental dust is wiped from windowsills and fixtures. Most homeowners are surprised how little cleanup they have to do themselves.
Bottom line
Popcorn removal is a working project inside your home for several days. It should not leave a trail of dust across the entire house. A crew that shows up with plastic, tape, tarps and a sprayer is a crew that respects your space.
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