Process — 4 min read
How Dustless Is Dustless Sanding?
The honest answer is 'nearly, but not entirely' — and knowing where the remaining dust comes from tells you what to ask a contractor.
What the term actually means
"Dustless" describes a system, not a result: extraction connected directly to the sanding equipment, so dust is pulled away at the moment it is created rather than swept up afterward.
A well-run system captures the large majority of it. It does not capture all of it, and any contractor who says otherwise is telling you what you want to hear.
Where the leftover dust comes from
Almost never the main sander — that machine is easy to connect and captures well. The dust that ends up in your house comes from the edger, from hand sanding in corners and closets, from the moments a hose gets disconnected to move rooms, and from HVAC systems circulating whatever escaped into the rest of the home.
That is why we run extraction on the small tools too, and why sealing supply and return vents matters as much as the vacuum does.
Questions worth asking
Is the extraction HEPA-rated, or is it a shop vacuum? Is the edger connected as well as the main sander? Will the work area be physically sealed off? Are HVAC vents covered? Who does final cleanup, and when?
A contractor with real containment answers those quickly and specifically.
What to expect in practice
Sealed containment at the work area, HEPA extraction at every machine, covered vents, and cleanup before we leave.
You may still find a thin film on a surface near the work zone. What you will not get is fine dust in your closets, in your bedding, and on top of your kitchen cabinets for the next month.